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r21615 Tuesday 5th March, 2013 at 23:43:05 UTC by Angelo Salese
dreamchg seems to use a framebuffer ...
[src/mess/drivers]casloopy.c

trunk/src/mess/drivers/casloopy.c
r21614r21615
163163   required_shared_ptr<UINT32> m_bios_rom;
164164   UINT16 *m_paletteram;
165165   UINT8 *m_vram;
166   UINT8 *m_bitmap_vram;
167   UINT16 sh7021_regs[0x100];
166168   int m_gfx_index;
167169   DECLARE_DRIVER_INIT(casloopy);
168170   virtual void machine_start();
r21614r21615
175177   DECLARE_WRITE16_MEMBER(casloopy_pal_w);
176178   DECLARE_READ8_MEMBER(casloopy_vram_r);
177179   DECLARE_WRITE8_MEMBER(casloopy_vram_w);
180   DECLARE_READ16_MEMBER(sh7021_r);
181   DECLARE_WRITE16_MEMBER(sh7021_w);
182   DECLARE_READ8_MEMBER(casloopy_bitmap_r);
183   DECLARE_WRITE8_MEMBER(casloopy_bitmap_w);
178184};
179185
180186
181187static const gfx_layout casloopy_tile_layout =
182188{
183189   8,8,
184   0x400,
190   0x10000/32,
185191   4,
186192   { 0, 1, 2, 3 },
187193   { STEP8(0, 4) },
r21614r21615
192198void casloopy_state::video_start()
193199{
194200   /* TODO: proper sizes */
195   m_paletteram = auto_alloc_array(machine(), UINT16, 0x1000);
196   m_vram = auto_alloc_array(machine(), UINT8, 0x4000);
201   m_paletteram = auto_alloc_array_clear(machine(), UINT16, 0x1000);
202   m_vram = auto_alloc_array_clear(machine(), UINT8, 0x10000);
203   m_bitmap_vram = auto_alloc_array_clear(machine(), UINT8, 0x20000);
197204
198205   for (m_gfx_index = 0; m_gfx_index < MAX_GFX_ELEMENTS; m_gfx_index++)
199206      if (machine().gfx[m_gfx_index] == 0)
r21614r21615
217224         UINT16 tile = (m_vram[count+1])|(m_vram[count]<<8);
218225
219226         tile &= 0x3ff; //???
220         tile |= 0x100;
221227
222228         drawgfx_opaque(bitmap,cliprect,gfx,tile,7,0,0,x*8,y*8);
223229
r21614r21615
225231      }
226232   }
227233
234   static int test;
235
236   if(machine().input().code_pressed(KEYCODE_Z))
237      test+=0x100;
238
239   if(machine().input().code_pressed(KEYCODE_X))
240      test-=0x100;
241
242   popmessage("%08x",test);
243
244   count = test;
245
246   for (y=cliprect.min_y;y<cliprect.max_y;y++)
247   {
248      for(x=0;x<256;x++)
249      {
250         UINT8 pix;
251
252         pix = m_bitmap_vram[count];
253         if(pix)
254            bitmap.pix16(y, x) = pix;
255
256         count++;
257      }
258   }
259
228260   return 0;
229261}
230262
r21614r21615
232264{
233265   if(offset == 4/2)
234266   {
235      return (machine().primary_screen->vblank() << 8); /*| (machine().primary_screen->vpos() & 0xff);*/
267      return (machine().primary_screen->vblank() << 8) | (machine().rand() & 0xff); // vblank + vpos?
236268   }
237269
270   if(offset == 2/2)
271      return machine().rand();/*(machine().primary_screen->hblank() << 8) | (machine().primary_screen->hpos() & 0xff);*/ // hblank + hpos?
272
238273   printf("%08x\n",offset*2);
239274
240275   return 0xffff;
r21614r21615
242277
243278WRITE16_MEMBER(casloopy_state::casloopy_vregs_w)
244279{
245   printf("%08x %08x\n",offset*2,data);
280   if(offset != 6/2)
281      printf("%08x %08x\n",offset*2,data);
246282}
247283
248284READ16_MEMBER(casloopy_state::casloopy_pal_r)
r21614r21615
271307{
272308   m_vram[offset] = data;
273309
274   machine().gfx[m_gfx_index]->mark_dirty(offset/256);
310   machine().gfx[m_gfx_index]->mark_dirty(offset/32);
275311}
276312
313/* TODO: all of this should be internal to the SH core, this is just to check what it enables. */
314READ16_MEMBER(casloopy_state::sh7021_r)
315{
316   return sh7021_regs[offset];
317}
277318
319WRITE16_MEMBER(casloopy_state::sh7021_w)
320{
321   COMBINE_DATA(&sh7021_regs[offset]);
322
323   if(offset == 0x4e/2)
324   {
325      UINT32 src,dst,size,type;
326
327      src = (sh7021_regs[0x40/2]<<16)|(sh7021_regs[0x42/2]&0xffff);
328      dst = (sh7021_regs[0x44/2]<<16)|(sh7021_regs[0x46/2]&0xffff);
329      size = (sh7021_regs[0x4a/2]&0xffff);
330      type = (sh7021_regs[0x4e/2]&0xffff);
331
332      printf("%08x %08x %04x %04x\n",src & 0x7ffffff,dst & 0x7ffffff,size,type);
333
334      sh7021_regs[0x4e/2]&=0xfffe;
335   }
336
337//   printf("%08x %04x\n",sh7021_regs[offset],0x05ffff00+offset*2);
338}
339
340READ8_MEMBER(casloopy_state::casloopy_bitmap_r)
341{
342   return m_bitmap_vram[offset];
343}
344
345WRITE8_MEMBER(casloopy_state::casloopy_bitmap_w)
346{
347   m_bitmap_vram[offset] = data;
348}
349
278350static ADDRESS_MAP_START( casloopy_map, AS_PROGRAM, 32, casloopy_state )
279351   AM_RANGE(0x00000000, 0x00007fff) AM_RAM AM_SHARE("bios_rom")
280   AM_RANGE(0x01000000, 0x0107ffff) AM_RAM // stack pointer points here
281   AM_RANGE(0x04040000, 0x04043fff) AM_READWRITE8(casloopy_vram_r,casloopy_vram_w,0xffffffff) // tilemap + PCG
352   AM_RANGE(0x01000000, 0x0107ffff) AM_RAM AM_SHARE("wram")// stack pointer points here
353   AM_RANGE(0x04000000, 0x0401ffff) AM_READWRITE8(casloopy_bitmap_r,casloopy_bitmap_w,0xffffffff)
354   AM_RANGE(0x04040000, 0x0404ffff) AM_READWRITE8(casloopy_vram_r,casloopy_vram_w,0xffffffff) // tilemap + PCG
282355   AM_RANGE(0x04051000, 0x040510ff) AM_READWRITE16(casloopy_pal_r,casloopy_pal_w,0xffffffff)
283356   AM_RANGE(0x04058000, 0x04058007) AM_READWRITE16(casloopy_vregs_r,casloopy_vregs_w,0xffffffff)
357   AM_RANGE(0x0405b000, 0x0405b00f) AM_RAM // RGB brightness plus scrolling
358   AM_RANGE(0x05ffff00, 0x05ffffff) AM_READWRITE16(sh7021_r,sh7021_w,0xffffffff)
284359//   AM_RANGE(0x05ffff00, 0x05ffffff) - SH7021 internal i/o
285360   AM_RANGE(0x06000000, 0x061fffff) AM_ROM AM_REGION("rom_cart",0)
286   AM_RANGE(0x07fff000, 0x07ffffff) AM_RAM
361   AM_RANGE(0x07000000, 0x070003ff) AM_RAM AM_SHARE("oram")// on-chip RAM, actually at 0xf000000 (1 kb)
362   AM_RANGE(0x09000000, 0x0907ffff) AM_RAM AM_SHARE("wram")
287363   AM_RANGE(0x0e000000, 0x0e1fffff) AM_ROM AM_REGION("rom_cart",0)
364   AM_RANGE(0x0f000000, 0x0f0003ff) AM_RAM AM_SHARE("oram")
288365ADDRESS_MAP_END
289366
290367#if 0
r21614r21615
331408
332409   /* video hardware */
333410   MCFG_SCREEN_ADD("screen", RASTER)
334   MCFG_SCREEN_REFRESH_RATE(60)
335   MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
336   MCFG_SCREEN_SIZE(32*8, 32*8)
337   MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
411   MCFG_SCREEN_RAW_PARAMS(8000000, 444, 0, 256, 263, 0, 256)
412
413//   MCFG_SCREEN_REFRESH_RATE(60)
414//   MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
415//   MCFG_SCREEN_SIZE(444, 263)
416//   MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1)
338417   MCFG_SCREEN_UPDATE_DRIVER(casloopy_state, screen_update_casloopy)
339418
340419   MCFG_PALETTE_LENGTH(512)

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