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annotate src/video/ataricommon/SDL_ataric2p.S @ 4389:c6c3a6e7db46 SDL-1.2

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Fixed bug #899 Jeremiah Morris 2009-12-09 16:23:50 PST Re-enable mouseLocation workaround on 10.4, 10.5 OS X systems before 10.6 have a bug with [NSEvent mouseLocation] if the screen resolution changes. SDL_QuartzVideo.m contains a workaround for this bug, but it was placed inside an #ifdef in revision 4762. The comment reads, "I'm gambling they fixed this by 10.4." After seeing this bug on several Tiger and Leopard systems (both PPC and Intel), I can confirm that it's not fixed until 10.6. The workaround doesn't compile for x86_64/10.6, so I can understand why it was segregated, but it needs to remain in place for the i386 and ppc versions. The workaround causes no problems under 10.6, even though it's not necessary there. Patch is attached with one method of keeping the workaround active on the systems that need it.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Dec 2009 15:11:49 +0000
parents a52047c790a2
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /*
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24 Chunky to planar conversion routine
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25 1 byte/pixel -> 4 or 8 bit planes
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26
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27 Patrice Mandin
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28 Xavier Joubert
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29 Mikael Kalms
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30 */
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31
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32 .globl _SDL_Atari_C2pConvert
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33 .globl _SDL_Atari_C2pConvert8
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34 .globl _SDL_Atari_C2pConvert4
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35 .globl _SDL_Atari_C2pConvert4_pal
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36
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37 /* ------------ Conversion C2P, 8 bits ------------ */
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38
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39 .text
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40 _SDL_Atari_C2pConvert8:
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41 #if !defined(__mcoldfire__)
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42 movel sp@(4),c2p_source
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43 movel sp@(8),c2p_dest
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44 movel sp@(12),c2p_width
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45 movel sp@(16),c2p_height
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46 movel sp@(20),c2p_dblligne
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47 movel sp@(24),c2p_srcpitch
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48 movel sp@(28),c2p_dstpitch
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49
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50 moveml d2-d7/a2-a6,sp@-
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51
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52 movel c2p_source,c2p_cursrc
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53 movel c2p_dest,c2p_curdst
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54 movel #0x0f0f0f0f,d4
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55 movel #0x00ff00ff,d5
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56 movel #0x55555555,d6
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57 movew c2p_height+2,c2p_row
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58 movew c2p_width+2,d0
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59 andw #-8,d0
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60 movew d0,c2p_rowlen
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61
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62 SDL_Atari_C2p8_rowloop:
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63
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64 movel c2p_cursrc,a0
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65 movel c2p_curdst,a1
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66
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67 movel a0,a2
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68 addw c2p_rowlen,a2
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69
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70 movel a0@+,d0
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71 movel a0@+,d1
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72 movel a0@+,d2
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73 movel a0@+,d3
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74 /*
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75 d0 = a7a6a5a4a3a2a1a0 b7b6b5b4b3b2b1b0 c7c6c5c4c3c2c1c0 d7d6d5d4d3d2d1d0
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76 d1 = e7e6e5e4e3e2e1e0 f7f6f5f4f3f2f1f0 g7g6g5g4g3g2g1g0 h7h6h5h4h3h2h1h0
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77 d2 = i7i6i5i4i3i2i1i0 j7j6j5j4j3j2j1j0 k7k6k5k4k3k2k1k0 l7l6l5l4l3l2l1l0
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78 d3 = m7m6m5m4m3m2m1m0 n7n6n5n4n3n2n1n0 o7o6o5o4o3o2o1o0 p7p6p5p4p3p2p1p0
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79 */
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80 movel d1,d7
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81 lsrl #4,d7
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82 eorl d0,d7
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83 andl d4,d7
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84 eorl d7,d0
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85 lsll #4,d7
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86 eorl d7,d1
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87
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88 movel d3,d7
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89 lsrl #4,d7
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90 eorl d2,d7
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91 andl d4,d7
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92 eorl d7,d2
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93 lsll #4,d7
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94 eorl d7,d3
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95
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96 movel d2,d7
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97 lsrl #8,d7
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98 eorl d0,d7
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99 andl d5,d7
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100 eorl d7,d0
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101 lsll #8,d7
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102 eorl d7,d2
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103
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104 movel d3,d7
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105 lsrl #8,d7
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106 eorl d1,d7
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107 andl d5,d7
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108 eorl d7,d1
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109 lsll #8,d7
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110 eorl d7,d3
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111 /*
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112 d0 = a7a6a5a4e7e6e5e4 i7i6i5i4m7m6m5m4 c7c6c5c4g7g6g5g4 k7k6k5k4o7o6o5o4
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113 d1 = a3a2a1a0e3e2e1e0 i3i2i1i0m3m2m1m0 c3c2c1c0g3g2g1g0 k3k2k1k0o3o2o1o0
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114 d2 = b7b6b5b4f7f6f5f4 j7j6j5j4n7n6n5n4 d7d6d5d4h7h6h5h4 l7l6l5l4p7p6p5p4
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115 d3 = b3b2b1b0f3f2f1f0 j3j2j1j0n3n2n1n0 d3d2d1d0h3h2h1h0 l3l2l1l0p3p2p1p0
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116 */
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117 bras SDL_Atari_C2p8_start
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118
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119 SDL_Atari_C2p8_pix16:
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120
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121 movel a0@+,d0
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122 movel a0@+,d1
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123 movel a0@+,d2
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124 movel a0@+,d3
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125 /*
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126 d0 = a7a6a5a4a3a2a1a0 b7b6b5b4b3b2b1b0 c7c6c5c4c3c2c1c0 d7d6d5d4d3d2d1d0
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127 d1 = e7e6e5e4e3e2e1e0 f7f6f5f4f3f2f1f0 g7g6g5g4g3g2g1g0 h7h6h5h4h3h2h1h0
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128 d2 = i7i6i5i4i3i2i1i0 j7j6j5j4j3j2j1j0 k7k6k5k4k3k2k1k0 l7l6l5l4l3l2l1l0
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129 d3 = m7m6m5m4m3m2m1m0 n7n6n5n4n3n2n1n0 o7o6o5o4o3o2o1o0 p7p6p5p4p3p2p1p0
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130 */
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131 movel d1,d7
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132 lsrl #4,d7
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133 movel a3,a1@+
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134 eorl d0,d7
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135 andl d4,d7
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136 eorl d7,d0
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137 lsll #4,d7
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138 eorl d7,d1
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parents: 297
diff changeset
139
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
140 movel d3,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
141 lsrl #4,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
142 eorl d2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
143 andl d4,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
144 eorl d7,d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
145 movel a4,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
146 lsll #4,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
147 eorl d7,d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
148
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
149 movel d2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
150 lsrl #8,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
151 eorl d0,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
152 andl d5,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
153 eorl d7,d0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
154 movel a5,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
155 lsll #8,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
156 eorl d7,d2
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157
734
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
158 movel d3,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
159 lsrl #8,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
160 eorl d1,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
161 andl d5,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
162 eorl d7,d1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
163 movel a6,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
164 lsll #8,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
165 eorl d7,d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
166 /*
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
167 d0 = a7a6a5a4e7e6e5e4 i7i6i5i4m7m6m5m4 c7c6c5c4g7g6g5g4 k7k6k5k4o7o6o5o4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
168 d1 = a3a2a1a0e3e2e1e0 i3i2i1i0m3m2m1m0 c3c2c1c0g3g2g1g0 k3k2k1k0o3o2o1o0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
169 d2 = b7b6b5b4f7f6f5f4 j7j6j5j4n7n6n5n4 d7d6d5d4h7h6h5h4 l7l6l5l4p7p6p5p4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
170 d3 = b3b2b1b0f3f2f1f0 j3j2j1j0n3n2n1n0 d3d2d1d0h3h2h1h0 l3l2l1l0p3p2p1p0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
171 */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
172
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
173 SDL_Atari_C2p8_start:
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
174
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
175 movel d2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
176 lsrl #1,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
177 eorl d0,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
178 andl d6,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
179 eorl d7,d0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
180 addl d7,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
181 eorl d7,d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
182
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
183 movel d3,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
184 lsrl #1,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
185 eorl d1,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
186 andl d6,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
187 eorl d7,d1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
188 addl d7,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
189 eorl d7,d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
190 /*
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
191 d0 = a7b7a5b5e7f7e5f5 i7j7i5j5m7n7m5n5 c7d7c5d5g7h7g5h5 k7l7k5l5o7p7o5p5
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
192 d1 = a3b3a1b1e3f3e1f1 i3j3i1j1m3n3m1n1 c3d3c1d1g3h3g1h1 k3l3k1l1o3p3o1p1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
193 d2 = a6b6a4b4e6f6e4f4 i6j6i4j4m6n6m4n4 c6d6c4d4g6h6g4h4 k6l6k4l4o6p6o4p4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
194 d3 = a2b2a0b0e2f2e0f0 i2j2i0j0m2n2m0n0 c2d2c0d0g2h2g0h0 k2l2k0l0o2p2o0p0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
195 */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
196 movew d2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
197 movew d0,d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
198 swap d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
199 movew d2,d0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
200 movew d7,d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
201
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
202 movew d3,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
203 movew d1,d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
204 swap d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
205 movew d3,d1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
206 movew d7,d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
207 /*
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
208 d0 = a7b7a5b5e7f7e5f5 i7j7i5j5m7n7m5n5 a6b6a4b4e6f6e4f4 i6j6i4j4m6n6m4n4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
209 d1 = a3b3a1b1e3f3e1f1 i3j3i1j1m3n3m1n1 a2b2a0b0e2f2e0f0 i2j2i0j0m2n2m0n0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
210 d2 = c7d7c5d5g7h7g5h5 k7l7k5l5o7p7o5p5 c6d6c4d4g6h6g4h4 k6l6k4l4o6p6o4p4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
211 d3 = c3d3c1d1g3h3g1h1 k3l3k1l1o3p3o1p1 c2d2c0d0g2h2g0h0 k2l2k0l0o2p2o0p0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
212 */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
213 movel d2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
214 lsrl #2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
215 eorl d0,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
216 andl #0x33333333,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
217 eorl d7,d0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
218 lsll #2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
219 eorl d7,d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
220
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
221 movel d3,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
222 lsrl #2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
223 eorl d1,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
224 andl #0x33333333,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
225 eorl d7,d1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
226 lsll #2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
227 eorl d7,d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
228 /*
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
229 d0 = a7b7c7d7e7f7g7h7 i7j7k7l7m7n7o7p7 a6b6c6d6e6f6g6h6 i6j6k6l6m6n6o6p6
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
230 d1 = a3b3c3d3e3f3g3h3 i3j3k3l3m3n3o3p3 a2b2c2d2e2f2g2h2 i2j2k2l2m2n2o2p2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
231 d2 = a5b5c5d5e5f5g5h5 i5j5k5l5m5n5o5p5 a4b4c4d4e4f4g4h4 i4j4k4l4m4n4o4p4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
232 d3 = a1b1c1d1e1f1g1h1 i1j1k1l1m1n1o1p1 a0b0c0d0e0f0g0h0 i0j0k0l0m0n0o0p0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
233 */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
234 swap d0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
235 swap d1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
236 swap d2
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
237 swap d3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
238
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
239 movel d0,a6
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
240 movel d2,a5
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
241 movel d1,a4
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
242 movel d3,a3
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
243
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
244 cmpl a0,a2
1086
93207759e065 Cleanup C2P routine
Patrice Mandin <patmandin@gmail.com>
parents: 734
diff changeset
245 bgt SDL_Atari_C2p8_pix16
734
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
246
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
247 movel a3,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
248 movel a4,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
249 movel a5,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
250 movel a6,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
251
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
252 /* Double the line ? */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
253
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
254 movel c2p_srcpitch,d0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
255 movel c2p_dstpitch,d1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
256
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
257 tstl c2p_dblligne
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
258 beqs SDL_Atari_C2p8_nodblline
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
259
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
260 movel c2p_curdst,a0
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
261 movel a0,a1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
262 addl d1,a1
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
263
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
264 movew c2p_width+2,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
265 lsrw #4,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
266 subql #1,d7
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
267 SDL_Atari_C2p8_dblloop:
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
268 movel a0@+,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
269 movel a0@+,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
270 movel a0@+,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
271 movel a0@+,a1@+
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
272 dbra d7,SDL_Atari_C2p8_dblloop
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
273
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
274 addl d1,c2p_curdst
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
275
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
276 SDL_Atari_C2p8_nodblline:
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
277
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
278 /* Next line */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
279
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
280 addl d0,c2p_cursrc
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
281 addl d1,c2p_curdst
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
282
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
283 subqw #1,c2p_row
1086
93207759e065 Cleanup C2P routine
Patrice Mandin <patmandin@gmail.com>
parents: 734
diff changeset
284 bne SDL_Atari_C2p8_rowloop
734
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
285
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
286 moveml sp@+,d2-d7/a2-a6
4375
a52047c790a2 Disable C2P routines for Coldfire CPUs
Patrice Mandin <patmandin@gmail.com>
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diff changeset
287 #endif
734
0310bb01091f New C2P conversion routine
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parents: 297
diff changeset
288 rts
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
289
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
290 /* ------------ Conversion C2P, 4 bits ------------ */
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
291
0310bb01091f New C2P conversion routine
Patrice Mandin <patmandin@gmail.com>
parents: 297
diff changeset
292 _SDL_Atari_C2pConvert4:
4375
a52047c790a2 Disable C2P routines for Coldfire CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 4159
diff changeset
293 #if !defined(__mcoldfire__)
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
294 movel sp@(4),c2p_source
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
295 movel sp@(8),c2p_dest
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 movel sp@(12),c2p_width
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
297 movel sp@(16),c2p_height
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
298 movel sp@(20),c2p_dblligne
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
299 movel sp@(24),c2p_srcpitch
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
300 movel sp@(28),c2p_dstpitch
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
301
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
302 moveml d2-d7/a2-a6,sp@-
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
303
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 movel c2p_source,a0
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
305 movel c2p_dest,a1
734
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parents: 297
diff changeset
306 lea _SDL_Atari_table_c2p,a2
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
307 movel #0x00070001,d3
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
308 #if defined(__M68020__)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
309 moveq #0,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
310 #endif
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
311
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
312 movel c2p_height,d7
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
313 subql #1,d7
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
314 c2p4_bcly:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
315 movel a0,a4 | Save start address of source
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
316 movel a1,a5 | Save start address of dest
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
317
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
318 | Conversion
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
319
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
320 movel c2p_width,d6
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
321 lsrw #4,d6
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
322 subql #1,d6
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
323 c2p4_bclx:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
324 | Octets 0-7
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
325
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
326 moveq #0,d1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
327 moveq #7,d5
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
328 c2p4_bcl07:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
329 #if defined(__M68020__)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
330 moveb a0@+,d0
1086
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diff changeset
331 lea a2@(0,d0:w:4),a3
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
332 #else
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
333 moveq #0,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
334 moveb a0@+,d0
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
335 lslw #2,d0
1086
93207759e065 Cleanup C2P routine
Patrice Mandin <patmandin@gmail.com>
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diff changeset
336 lea a2@(0,d0:w),a3
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
337 #endif
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
338 lsll #1,d1
1086
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diff changeset
339 orl a3@,d1
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
340 dbra d5,c2p4_bcl07
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
341
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
342 movepl d1,a1@(0)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
343 addw d3,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
344 swap d3
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
345
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
346 | Octets 8-15
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
347
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
348 moveq #0,d1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
349 moveq #7,d5
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
350 c2p4_bcl815:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
351 #if defined(__M68020__)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
352 moveb a0@+,d0
1086
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diff changeset
353 lea a2@(0,d0:w:4),a3
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
354 #else
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
355 moveq #0,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
356 moveb a0@+,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
357 lslw #2,d0
1086
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diff changeset
358 lea a2@(0,d0:w),a3
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 #endif
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
360 lsll #1,d1
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diff changeset
361 orl a3@,d1
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
362 dbra d5,c2p4_bcl815
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
363
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
364 movepl d1,a1@(0)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
365 addw d3,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366 swap d3
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
367
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368 dbra d6,c2p4_bclx
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370 | Double line ?
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372 tstl c2p_dblligne
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diff changeset
373 beqs c2p4_nodblligne
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375 movel a5,a6 | src line
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 movel a5,a1 | dest line
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
377 addl c2p_dstpitch,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
378
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
379 movel c2p_width,d6
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
380 lsrw #3,d6
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
381 subql #1,d6
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
382 c2p4_copydbl:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383 movel a6@+,a1@+
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
384 dbra d6,c2p4_copydbl
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
385
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
386 addl c2p_dstpitch,a5
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
387 c2p4_nodblligne:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
388
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
389 | Next line
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
390
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
391 movel a4,a0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
392 addl c2p_srcpitch,a0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
393 movel a5,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
394 addl c2p_dstpitch,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
396 dbra d7,c2p4_bcly
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
397
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 moveml sp@+,d2-d7/a2-a6
4375
a52047c790a2 Disable C2P routines for Coldfire CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 4159
diff changeset
399 #endif
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 rts
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401
734
0310bb01091f New C2P conversion routine
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parents: 297
diff changeset
402 /* ------------ Conversion of a light palette in 4 bits ------------ */
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403
734
0310bb01091f New C2P conversion routine
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parents: 297
diff changeset
404 _SDL_Atari_C2pConvert4_pal:
4375
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Patrice Mandin <patmandin@gmail.com>
parents: 4159
diff changeset
405 #if !defined(__mcoldfire__)
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
406 /* a0 is a 256-word light palette */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
407 movel sp@(4),a0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 moveml d2-d3,sp@-
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
410
1086
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Patrice Mandin <patmandin@gmail.com>
parents: 734
diff changeset
411 lea _SDL_Atari_table_c2p,a1
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 movew #255,d3
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 c2p_pal_initbcl:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414 movew a0@+,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
415 lsrw #4,d0
1086
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Patrice Mandin <patmandin@gmail.com>
parents: 734
diff changeset
416 andw #15,d0
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 moveq #3,d1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419 c2p_pal_initbyte:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420 btst d1,d0
1086
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Patrice Mandin <patmandin@gmail.com>
parents: 734
diff changeset
421 sne d2
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 negw d2
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 moveb d2,a1@(0,d1:w)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425 dbra d1,c2p_pal_initbyte
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 addql #4,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 dbra d3,c2p_pal_initbcl
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 moveml sp@+,d2-d3
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Patrice Mandin <patmandin@gmail.com>
parents: 4159
diff changeset
431 #endif
281
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
432 rts
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 /* ------------ Buffers ------------ */
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435
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93207759e065 Cleanup C2P routine
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436 .bss
281
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437
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
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438 .even
734
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439 .comm _SDL_Atari_C2pConvert,4
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440 .comm _SDL_Atari_table_c2p,1024
281
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441
734
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442 .comm c2p_source,4 /* Source framebuffer */
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parents: 734
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443 .comm c2p_dest,4 /* Destination framebuffer */
93207759e065 Cleanup C2P routine
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parents: 734
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444 .comm c2p_width,4 /* Width of zone to convert */
734
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445 .comm c2p_height,4 /* Height of zone to convert */
0310bb01091f New C2P conversion routine
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parents: 297
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446 .comm c2p_dblligne,4 /* Double the lines while converting ? */
0310bb01091f New C2P conversion routine
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447 .comm c2p_srcpitch,4 /* Source pitch */
0310bb01091f New C2P conversion routine
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parents: 297
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448 .comm c2p_dstpitch,4 /* Destination pitch */
0310bb01091f New C2P conversion routine
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parents: 297
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449 .comm c2p_cursrc,4 /* Current source line */
0310bb01091f New C2P conversion routine
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parents: 297
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450 .comm c2p_curdst,4 /* Current destination line */
0310bb01091f New C2P conversion routine
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parents: 297
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451 .comm c2p_rowlen,2 /* Line length in bytes */
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parents: 734
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452 .comm c2p_row,2 /* Current line number */