6cadc2da |
1 | // This is a direct rewrite of gfx_cd.asm (x86 asm to C). |
2 | // You can even find some x86 register names :) |
3 | // Original code (c) 2002 by Stéphane Dallongeville |
4 | |
5 | // (c) Copyright 2007, Grazvydas "notaz" Ignotas |
6 | |
cb4a513a |
7 | |
efcba75f |
8 | #include "../pico_int.h" |
cb4a513a |
9 | |
9c9cda8c |
10 | #undef dprintf |
11 | #define dprintf(...) |
12 | |
eff55556 |
13 | #define _rot_comp Pico_mcd->rot_comp |
d1df8786 |
14 | |
75736070 |
15 | static const int Table_Rot_Time[] = |
d1df8786 |
16 | { |
17 | 0x00054000, 0x00048000, 0x00040000, 0x00036000, //; 008-032 ; briefing - sprite |
18 | 0x0002E000, 0x00028000, 0x00024000, 0x00022000, //; 036-064 ; arbre souvent |
19 | 0x00021000, 0x00020000, 0x0001E000, 0x0001B800, //; 068-096 ; map thunderstrike |
20 | 0x00019800, 0x00017A00, 0x00015C00, 0x00013E00, //; 100-128 ; logo défoncé |
21 | |
22 | 0x00012000, 0x00011800, 0x00011000, 0x00010800, //; 132-160 ; briefing - map |
23 | 0x00010000, 0x0000F800, 0x0000F000, 0x0000E800, //; 164-192 |
24 | 0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800, //; 196-224 |
25 | 0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800, //; 228-256 ; batman visage |
26 | |
27 | 0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00, //; 260-288 |
28 | 0x00009C00, 0x00009B00, 0x00009A00, 0x00009900, //; 292-320 |
29 | 0x00009800, 0x00009700, 0x00009600, 0x00009500, //; 324-352 |
30 | 0x00009400, 0x00009300, 0x00009200, 0x00009100, //; 356-384 |
31 | |
32 | 0x00009000, 0x00008F00, 0x00008E00, 0x00008D00, //; 388-416 |
33 | 0x00008C00, 0x00008B00, 0x00008A00, 0x00008900, //; 420-448 |
34 | 0x00008800, 0x00008700, 0x00008600, 0x00008500, //; 452-476 |
35 | 0x00008400, 0x00008300, 0x00008200, 0x00008100, //; 480-512 |
36 | }; |
37 | |
38 | |
cb4a513a |
39 | static void gfx_cd_start(void) |
40 | { |
d1df8786 |
41 | int upd_len; |
42 | |
eff55556 |
43 | // _rot_comp.XD_Mul = ((_rot_comp.Reg_5C & 0x1f) + 1) * 4; // unused |
44 | _rot_comp.Function = (_rot_comp.Reg_58 & 7) | (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr |
45 | // _rot_comp.Buffer_Adr = (_rot_comp.Reg_5E & 0xfff8) << 2; // unused? |
46 | _rot_comp.YD = (_rot_comp.Reg_60 >> 3) & 7; |
47 | _rot_comp.Vector_Adr = (_rot_comp.Reg_66 & 0xfffe) << 2; |
a4030801 |
48 | |
eff55556 |
49 | upd_len = (_rot_comp.Reg_62 >> 3) & 0x3f; |
d1df8786 |
50 | upd_len = Table_Rot_Time[upd_len]; |
eff55556 |
51 | _rot_comp.Draw_Speed = _rot_comp.Float_Part = upd_len; |
d1df8786 |
52 | |
eff55556 |
53 | _rot_comp.Reg_58 |= 0x8000; // Stamp_Size, we start a new GFX operation |
d1df8786 |
54 | |
eff55556 |
55 | switch (_rot_comp.Reg_58 & 6) // Scr_16? |
a4030801 |
56 | { |
57 | case 0: // ? |
eff55556 |
58 | _rot_comp.Stamp_Map_Adr = (_rot_comp.Reg_5A & 0xff80) << 2; |
a4030801 |
59 | break; |
60 | case 2: // .Dot_32 |
eff55556 |
61 | _rot_comp.Stamp_Map_Adr = (_rot_comp.Reg_5A & 0xffe0) << 2; |
a4030801 |
62 | break; |
63 | case 4: // .Scr_16 |
eff55556 |
64 | _rot_comp.Stamp_Map_Adr = 0x20000; |
a4030801 |
65 | break; |
66 | case 6: // .Scr_16_Dot_32 |
eff55556 |
67 | _rot_comp.Stamp_Map_Adr = (_rot_comp.Reg_5A & 0xe000) << 2; |
a4030801 |
68 | break; |
69 | } |
70 | |
eff55556 |
71 | dprintf("gfx_cd_start, stamp_map_addr=%06x", _rot_comp.Stamp_Map_Adr); |
c008977e |
72 | |
d1df8786 |
73 | gfx_cd_update(); |
74 | } |
75 | |
76 | |
77 | static void gfx_completed(void) |
78 | { |
eff55556 |
79 | _rot_comp.Reg_58 &= 0x7fff; // Stamp_Size |
80 | _rot_comp.Reg_64 = 0; |
cb4a513a |
81 | if (Pico_mcd->s68k_regs[0x33] & (1<<1)) |
82 | { |
ca61ee42 |
83 | elprintf(EL_INTS, "gfx_cd irq 1"); |
cb4a513a |
84 | SekInterruptS68k(1); |
85 | } |
86 | } |
87 | |
d1df8786 |
88 | |
00bd648e |
89 | static void gfx_do(unsigned int func, unsigned short *stamp_base, unsigned int H_Dot) |
a4030801 |
90 | { |
528ec956 |
91 | unsigned int eax, ebx, ecx, edx, esi, edi, pixel; |
00bd648e |
92 | unsigned int XD, Buffer_Adr; |
528ec956 |
93 | int DYXS; |
a4030801 |
94 | |
eff55556 |
95 | XD = _rot_comp.Reg_60 & 7; |
96 | Buffer_Adr = ((_rot_comp.Reg_5E & 0xfff8) + _rot_comp.YD) << 2; |
97 | ecx = *(unsigned int *)(Pico_mcd->word_ram2M + _rot_comp.Vector_Adr); |
a4030801 |
98 | edx = ecx >> 16; |
99 | ecx = (ecx & 0xffff) << 8; |
100 | edx <<= 8; |
eff55556 |
101 | DYXS = *(int *)(Pico_mcd->word_ram2M + _rot_comp.Vector_Adr + 4); |
102 | _rot_comp.Vector_Adr += 8; |
a4030801 |
103 | |
104 | // MAKE_IMAGE_LINE |
528ec956 |
105 | while (H_Dot) |
a4030801 |
106 | { |
c008977e |
107 | // MAKE_IMAGE_PIXEL |
108 | if (!(func & 1)) // NOT TILED |
109 | { |
110 | int mask = (func & 4) ? 0x00800000 : 0x00f80000; |
111 | if ((ecx | edx) & mask) |
112 | { |
113 | if (func & 0x18) goto Next_Pixel; |
114 | pixel = 0; |
115 | goto Pixel_Out; |
116 | } |
117 | } |
118 | |
a4030801 |
119 | if (func & 2) // mode 32x32 dot |
120 | { |
121 | if (func & 4) // 16x16 screen |
122 | { |
00bd648e |
123 | ebx = ((ecx >> (11+5)) & 0x007f) | |
124 | ((edx >> (11-2)) & 0x3f80); |
a4030801 |
125 | } |
126 | else // 1x1 screen |
127 | { |
00bd648e |
128 | ebx = ((ecx >> (11+5)) & 0x07) | |
129 | ((edx >> (11+2)) & 0x38); |
a4030801 |
130 | } |
131 | } |
132 | else // mode 16x16 dot |
133 | { |
134 | if (func & 4) // 16x16 screen |
135 | { |
00bd648e |
136 | ebx = ((ecx >> (11+4)) & 0x00ff) | |
137 | ((edx >> (11-4)) & 0xff00); |
a4030801 |
138 | } |
139 | else // 1x1 screen |
140 | { |
00bd648e |
141 | ebx = ((ecx >> (11+4)) & 0x0f) | |
142 | ((edx >> (11+0)) & 0xf0); |
a4030801 |
143 | } |
144 | } |
a4030801 |
145 | |
c008977e |
146 | edi = stamp_base[ebx]; |
00bd648e |
147 | esi = (edi & 0x7ff) << 7; |
528ec956 |
148 | if (!esi) { pixel = 0; goto Pixel_Out; } |
00bd648e |
149 | edi >>= (11+1); |
a4030801 |
150 | edi &= (0x1c>>1); |
151 | eax = ecx; |
152 | ebx = edx; |
153 | if (func & 2) edi |= 1; // 32 dots? |
154 | switch (edi) |
155 | { |
156 | case 0x00: // No_Flip_0, 16x16 dots |
157 | ebx = (ebx >> 9) & 0x3c; |
158 | ebx += esi; |
159 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
160 | eax = ((eax >> 8) & 0x40) + ebx; |
a4030801 |
161 | break; |
162 | case 0x01: // No_Flip_0, 32x32 dots |
163 | ebx = (ebx >> 9) & 0x7c; |
164 | ebx += esi; |
165 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
166 | eax = ((eax >> 7) & 0x180) + ebx; |
a4030801 |
167 | break; |
168 | case 0x02: // No_Flip_90, 16x16 dots |
169 | eax = (eax >> 9) & 0x3c; |
170 | eax += esi; |
171 | edi = (ebx & 0x3800) ^ 0x2800; // bswap |
172 | eax += ((ebx >> 8) & 0x40) ^ 0x40; |
a4030801 |
173 | break; |
174 | case 0x03: // No_Flip_90, 32x32 dots |
175 | eax = (eax >> 9) & 0x7c; |
176 | eax += esi; |
177 | edi = (ebx & 0x3800) ^ 0x2800; // bswap |
01bc6b19 |
178 | eax += ((ebx >> 7) & 0x180) ^ 0x180; |
a4030801 |
179 | break; |
180 | case 0x04: // No_Flip_180, 16x16 dots |
181 | ebx = ((ebx >> 9) & 0x3c) ^ 0x3c; |
182 | ebx += esi; |
183 | edi = (eax & 0x3800) ^ 0x2800; // bswap and flip |
184 | eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx; |
a4030801 |
185 | break; |
186 | case 0x05: // No_Flip_180, 32x32 dots |
187 | ebx = ((ebx >> 9) & 0x7c) ^ 0x7c; |
188 | ebx += esi; |
189 | edi = (eax & 0x3800) ^ 0x2800; // bswap and flip |
190 | eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx; |
a4030801 |
191 | break; |
192 | case 0x06: // No_Flip_270, 16x16 dots |
193 | eax = ((eax >> 9) & 0x3c) ^ 0x3c; |
194 | eax += esi; |
195 | edi = (ebx & 0x3800) ^ 0x1000; // bswap |
196 | eax += (ebx >> 8) & 0x40; |
a4030801 |
197 | break; |
198 | case 0x07: // No_Flip_270, 32x32 dots |
199 | eax = ((eax >> 9) & 0x7c) ^ 0x7c; |
200 | eax += esi; |
201 | edi = (ebx & 0x3800) ^ 0x1000; // bswap |
202 | eax += (ebx >> 7) & 0x180; |
a4030801 |
203 | break; |
204 | case 0x08: // Flip_0, 16x16 dots |
01bc6b19 |
205 | ebx = (ebx >> 9) & 0x3c; |
a4030801 |
206 | ebx += esi; |
207 | edi = (eax & 0x3800) ^ 0x2800; // bswap, flip |
208 | eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx; |
a4030801 |
209 | break; |
210 | case 0x09: // Flip_0, 32x32 dots |
01bc6b19 |
211 | ebx = (ebx >> 9) & 0x7c; |
a4030801 |
212 | ebx += esi; |
213 | edi = (eax & 0x3800) ^ 0x2800; // bswap, flip |
214 | eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx; |
a4030801 |
215 | break; |
216 | case 0x0a: // Flip_90, 16x16 dots |
217 | eax = ((eax >> 9) & 0x3c) ^ 0x3c; |
218 | eax += esi; |
219 | edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip |
220 | eax += ((ebx >> 8) & 0x40) ^ 0x40; |
a4030801 |
221 | break; |
222 | case 0x0b: // Flip_90, 32x32 dots |
223 | eax = ((eax >> 9) & 0x7c) ^ 0x7c; |
224 | eax += esi; |
225 | edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip |
226 | eax += ((ebx >> 7) & 0x180) ^ 0x180; |
a4030801 |
227 | break; |
228 | case 0x0c: // Flip_180, 16x16 dots |
229 | ebx = ((ebx >> 9) & 0x3c) ^ 0x3c; |
230 | ebx += esi; |
231 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
232 | eax = ((eax >> 8) & 0x40) + ebx; |
a4030801 |
233 | break; |
234 | case 0x0d: // Flip_180, 32x32 dots |
235 | ebx = ((ebx >> 9) & 0x7c) ^ 0x7c; |
236 | ebx += esi; |
237 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
238 | eax = ((eax >> 7) & 0x180) + ebx; |
a4030801 |
239 | break; |
240 | case 0x0e: // Flip_270, 16x16 dots |
241 | eax = (eax >> 9) & 0x3c; |
242 | eax += esi; |
243 | edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip |
244 | eax += (ebx >> 8) & 0x40; |
a4030801 |
245 | break; |
246 | case 0x0f: // Flip_270, 32x32 dots |
247 | eax = (eax >> 9) & 0x7c; |
248 | eax += esi; |
249 | edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip |
250 | eax += (ebx >> 7) & 0x180; |
a4030801 |
251 | break; |
252 | } |
253 | |
01bc6b19 |
254 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
255 | if (!(edi & 0x800)) pixel >>= 4; |
528ec956 |
256 | else pixel &= 0x0f; |
01bc6b19 |
257 | |
a4030801 |
258 | Pixel_Out: |
a4030801 |
259 | if (!pixel && (func & 0x18)) goto Next_Pixel; |
528ec956 |
260 | esi = Buffer_Adr + ((XD>>1)^1); // pixel addr |
a4030801 |
261 | eax = *(Pico_mcd->word_ram2M + esi); // old pixel |
528ec956 |
262 | if (XD & 1) |
a4030801 |
263 | { |
264 | if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite |
265 | *(Pico_mcd->word_ram2M + esi) = pixel | (eax & 0xf0); |
266 | } |
267 | else |
268 | { |
269 | if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite |
270 | *(Pico_mcd->word_ram2M + esi) = (pixel << 4) | (eax & 0xf); |
271 | } |
272 | |
273 | |
274 | Next_Pixel: |
eff55556 |
275 | ecx += (DYXS << 16) >> 16; // _rot_comp.DXS; |
276 | edx += DYXS >> 16; // _rot_comp.DYS; |
528ec956 |
277 | XD++; |
278 | if (XD >= 8) |
a4030801 |
279 | { |
eff55556 |
280 | Buffer_Adr += ((_rot_comp.Reg_5C & 0x1f) + 1) << 5; |
528ec956 |
281 | XD = 0; |
a4030801 |
282 | } |
528ec956 |
283 | H_Dot--; |
a4030801 |
284 | } |
528ec956 |
285 | // end while |
a4030801 |
286 | |
287 | |
00bd648e |
288 | // nothing_to_draw: |
eff55556 |
289 | _rot_comp.YD++; |
290 | // _rot_comp.V_Dot--; // will be done by caller |
a4030801 |
291 | } |
d1df8786 |
292 | |
293 | |
eff55556 |
294 | PICO_INTERNAL void gfx_cd_update(void) |
cb4a513a |
295 | { |
eff55556 |
296 | int V_Dot = _rot_comp.Reg_64 & 0xff; |
d1df8786 |
297 | int jobs; |
298 | |
eff55556 |
299 | dprintf("gfx_cd_update, Reg_64 = %04x", _rot_comp.Reg_64); |
d1df8786 |
300 | |
00bd648e |
301 | if (!V_Dot) |
d1df8786 |
302 | { |
d1df8786 |
303 | gfx_completed(); |
304 | return; |
305 | } |
306 | |
eff55556 |
307 | jobs = _rot_comp.Float_Part >> 16; |
d1df8786 |
308 | |
309 | if (!jobs) |
310 | { |
eff55556 |
311 | _rot_comp.Float_Part += _rot_comp.Draw_Speed; |
d1df8786 |
312 | return; |
313 | } |
314 | |
eff55556 |
315 | _rot_comp.Float_Part &= 0xffff; |
316 | _rot_comp.Float_Part += _rot_comp.Draw_Speed; |
d1df8786 |
317 | |
602133e1 |
318 | if (PicoOpt & POPT_EN_MCD_GFX) |
d1df8786 |
319 | { |
eff55556 |
320 | unsigned int func = _rot_comp.Function; |
321 | unsigned int H_Dot = _rot_comp.Reg_62 & 0x1ff; |
322 | unsigned short *stamp_base = (unsigned short *) (Pico_mcd->word_ram2M + _rot_comp.Stamp_Map_Adr); |
a4030801 |
323 | |
00bd648e |
324 | while (jobs--) |
325 | { |
326 | gfx_do(func, stamp_base, H_Dot); // jmp [Jmp_Adr]: |
d1df8786 |
327 | |
00bd648e |
328 | V_Dot--; // dec byte [V_Dot] |
329 | if (V_Dot == 0) |
330 | { |
331 | // GFX_Completed: |
332 | gfx_completed(); |
333 | return; |
334 | } |
335 | } |
336 | } |
337 | else |
338 | { |
339 | if (jobs >= V_Dot) |
d1df8786 |
340 | { |
d1df8786 |
341 | gfx_completed(); |
342 | return; |
343 | } |
00bd648e |
344 | V_Dot -= jobs; |
d1df8786 |
345 | } |
00bd648e |
346 | |
eff55556 |
347 | _rot_comp.Reg_64 = V_Dot; |
cb4a513a |
348 | } |
349 | |
350 | |
eff55556 |
351 | PICO_INTERNAL_ASM unsigned int gfx_cd_read(unsigned int a) |
cb4a513a |
352 | { |
d1df8786 |
353 | unsigned int d = 0; |
354 | |
355 | switch (a) { |
eff55556 |
356 | case 0x58: d = _rot_comp.Reg_58; break; |
357 | case 0x5A: d = _rot_comp.Reg_5A; break; |
358 | case 0x5C: d = _rot_comp.Reg_5C; break; |
359 | case 0x5E: d = _rot_comp.Reg_5E; break; |
360 | case 0x60: d = _rot_comp.Reg_60; break; |
361 | case 0x62: d = _rot_comp.Reg_62; break; |
362 | case 0x64: d = _rot_comp.Reg_64; break; |
d1df8786 |
363 | case 0x66: break; |
fa1e5e29 |
364 | default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break; |
d1df8786 |
365 | } |
366 | |
367 | dprintf("gfx_cd_read(%02x) = %04x", a, d); |
cb4a513a |
368 | |
89fa852d |
369 | return d; |
cb4a513a |
370 | } |
371 | |
eff55556 |
372 | PICO_INTERNAL_ASM void gfx_cd_write16(unsigned int a, unsigned int d) |
cb4a513a |
373 | { |
5c69a605 |
374 | dprintf("gfx_cd_write16(%x, %04x)", a, d); |
cb4a513a |
375 | |
376 | switch (a) { |
d1df8786 |
377 | case 0x58: // .Reg_Stamp_Size |
eff55556 |
378 | _rot_comp.Reg_58 = d & 7; |
d1df8786 |
379 | return; |
380 | |
381 | case 0x5A: // .Reg_Stamp_Adr |
eff55556 |
382 | _rot_comp.Reg_5A = d & 0xffe0; |
d1df8786 |
383 | return; |
384 | |
385 | case 0x5C: // .Reg_IM_VCell_Size |
eff55556 |
386 | _rot_comp.Reg_5C = d & 0x1f; |
d1df8786 |
387 | return; |
388 | |
389 | case 0x5E: // .Reg_IM_Adr |
eff55556 |
390 | _rot_comp.Reg_5E = d & 0xFFF8; |
d1df8786 |
391 | return; |
392 | |
393 | case 0x60: // .Reg_IM_Offset |
eff55556 |
394 | _rot_comp.Reg_60 = d & 0x3f; |
d1df8786 |
395 | return; |
396 | |
397 | case 0x62: // .Reg_IM_HDot_Size |
eff55556 |
398 | _rot_comp.Reg_62 = d & 0x1ff; |
d1df8786 |
399 | return; |
400 | |
401 | case 0x64: // .Reg_IM_VDot_Size |
eff55556 |
402 | _rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit? |
d1df8786 |
403 | return; |
404 | |
405 | case 0x66: // .Reg_Vector_Adr |
eff55556 |
406 | _rot_comp.Reg_66 = d & 0xfffe; |
cb4a513a |
407 | if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode |
408 | gfx_cd_start(); |
409 | return; |
d1df8786 |
410 | |
5c69a605 |
411 | default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return; |
cb4a513a |
412 | } |
413 | } |
414 | |
d1df8786 |
415 | |
eff55556 |
416 | PICO_INTERNAL void gfx_cd_reset(void) |
51a902ae |
417 | { |
eff55556 |
418 | memset(&_rot_comp.Reg_58, 0, sizeof(_rot_comp)); |
fa1e5e29 |
419 | } |
420 | |
421 | |
422 | // -------------------------------- |
423 | |
424 | #include "cell_map.c" |
425 | |
eff55556 |
426 | #ifndef UTYPES_DEFINED |
fa1e5e29 |
427 | typedef unsigned short u16; |
eff55556 |
428 | #endif |
fa1e5e29 |
429 | |
0a051f55 |
430 | // check: Heart of the alien, jaguar xj 220 |
eff55556 |
431 | PICO_INTERNAL void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc) |
fa1e5e29 |
432 | { |
433 | unsigned char *base; |
434 | unsigned int asrc, a2; |
435 | u16 *r; |
436 | |
437 | base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1]; |
438 | |
439 | switch (Pico.video.type) |
440 | { |
441 | case 1: // vram |
442 | r = Pico.vram; |
443 | for(; len; len--) |
444 | { |
445 | asrc = cell_map(source >> 2) << 2; |
446 | asrc |= source & 2; |
447 | // if(a&1) d=(d<<8)|(d>>8); // ?? |
448 | r[a>>1] = *(u16 *)(base + asrc); |
449 | source += 2; |
450 | // AutoIncrement |
451 | a=(u16)(a+inc); |
452 | } |
602133e1 |
453 | rendstatus |= PDRAW_SPRITES_MOVED; |
fa1e5e29 |
454 | break; |
455 | |
456 | case 3: // cram |
457 | Pico.m.dirtyPal = 1; |
458 | r = Pico.cram; |
459 | for(a2=a&0x7f; len; len--) |
460 | { |
461 | asrc = cell_map(source >> 2) << 2; |
462 | asrc |= source & 2; |
463 | r[a2>>1] = *(u16 *)(base + asrc); |
464 | source += 2; |
465 | // AutoIncrement |
466 | a2+=inc; |
467 | // good dest? |
468 | if(a2 >= 0x80) break; |
469 | } |
470 | a=(a&0xff00)|a2; |
471 | break; |
472 | |
473 | case 5: // vsram[a&0x003f]=d; |
474 | r = Pico.vsram; |
475 | for(a2=a&0x7f; len; len--) |
476 | { |
477 | asrc = cell_map(source >> 2) << 2; |
478 | asrc |= source & 2; |
479 | r[a2>>1] = *(u16 *)(base + asrc); |
480 | source += 2; |
481 | // AutoIncrement |
482 | a2+=inc; |
483 | // good dest? |
484 | if(a2 >= 0x80) break; |
485 | } |
486 | a=(a&0xff00)|a2; |
487 | break; |
488 | } |
489 | // remember addr |
490 | Pico.video.addr=(u16)a; |
51a902ae |
491 | } |
492 | |