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r29375 Sunday 6th April, 2014 at 18:47:51 UTC by Curt Coder
(MESS) tandy2k: Hacked in some video. (nw)
[src/emu/video]crt9007.c
[src/mess/drivers]tandy2k.c
[src/mess/includes]tandy2k.h

trunk/src/emu/video/crt9007.c
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398398
399399inline void crt9007_t::recompute_parameters()
400400{
401#ifdef UNUSED_FOR_NOW
401402   // check that necessary registers have been loaded
402403   if (!HAS_VALID_PARAMETERS) return;
403404
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441442   m_vsync_timer->adjust(m_screen->time_until_pos(0, 0));
442443   m_vlt_timer->adjust(m_screen->time_until_pos(0, m_vlt_start), 1);
443444   m_drb_timer->adjust(m_screen->time_until_pos(0, 0));
445#endif
444446}
445447
446448
trunk/src/mess/includes/tandy2k.h
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125125   optional_shared_ptr<UINT8> m_char_ram;
126126
127127   virtual void machine_start();
128   UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
128129
129130   void update_drq();
130131   void dma_request(int line, int state);
trunk/src/mess/drivers/tandy2k.c
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335335
336336// Video
337337
338UINT32 tandy2k_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
339{
340   const pen_t *pen = m_palette->pens();
341   address_space &program = m_maincpu->space(AS_PROGRAM);
342   
343   for (int y = 0; y < 400; y++)
344   {
345      UINT8 cgra = y % 16;
346
347      for (int sx = 0; sx < 80; sx++)
348      {
349         offs_t addr = 0x1ec00 + (((y / 16) * 80) + sx) * 2;
350         UINT8 vidla = program.read_word(addr);
351         UINT8 data = m_char_ram[(vidla << 4) | cgra];
352         logerror("y %u sx %u addr %06x vidla %02x data %02x\n",y,sx,addr,vidla,data);
353
354         for (int x = 0; x < 8; x++)
355         {
356            int color = BIT(data, 7);
357            bitmap.pix32(y, (sx * 8) + x) = pen[color];
358            data <<= 1;
359         }         
360      }
361   }
362
363   return 0;
364}
365
338366WRITE_LINE_MEMBER( tandy2k_state::vpac_vlt_w )
339367{
340368   m_drb0->ren_w(state);
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721749   MCFG_SCREEN_ADD(SCREEN_TAG, RASTER)
722750   MCFG_SCREEN_REFRESH_RATE(50)
723751   MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not accurate
724   MCFG_SCREEN_SIZE(640, 480)
725   MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
726   MCFG_SCREEN_UPDATE_DEVICE(CRT9021B_TAG, crt9021_t, screen_update)
752   MCFG_SCREEN_SIZE(640, 400)
753   MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 400-1)
754   //MCFG_SCREEN_UPDATE_DEVICE(CRT9021B_TAG, crt9021_t, screen_update)
755   MCFG_SCREEN_UPDATE_DRIVER(tandy2k_state, screen_update)
727756   
728757   MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
729758
730   MCFG_DEVICE_ADD(CRT9007_TAG, CRT9007, XTAL_16MHz*28/16/10)
759   MCFG_DEVICE_ADD(CRT9007_TAG, CRT9007, XTAL_16MHz*28/20/8)
731760   MCFG_DEVICE_ADDRESS_MAP(AS_0, vpac_mem)
732   MCFG_CRT9007_CHARACTER_WIDTH(10)
761   MCFG_CRT9007_CHARACTER_WIDTH(8)
733762   MCFG_CRT9007_INT_CALLBACK(DEVWRITELINE(I8259A_1_TAG, pic8259_device, ir1_w))
734763   MCFG_CRT9007_VS_CALLBACK(DEVWRITELINE(CRT9021B_TAG, crt9021_t, vsync_w))
735764   MCFG_CRT9007_VLT_CALLBACK(WRITELINE(tandy2k_state, vpac_vlt_w))
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749778   MCFG_CRT9212_WEN2_VCC()
750779   MCFG_CRT9212_DOUT_CALLBACK(WRITE8(tandy2k_state, drb_attr_w))
751780
752   MCFG_DEVICE_ADD(CRT9021B_TAG, CRT9021, XTAL_16MHz*28/16)
781   MCFG_DEVICE_ADD(CRT9021B_TAG, CRT9021, XTAL_16MHz*28/20)
753782   MCFG_VIDEO_SET_SCREEN(SCREEN_TAG)
754783
755   MCFG_TIMER_DRIVER_ADD_PERIODIC("vidldsh", tandy2k_state, vidldsh_tick, attotime::from_hz(XTAL_16MHz*28/16))
784   MCFG_TIMER_DRIVER_ADD_PERIODIC("vidldsh", tandy2k_state, vidldsh_tick, attotime::from_hz(XTAL_16MHz*28/20/8))
756785
757786   // sound hardware
758787   MCFG_SPEAKER_STANDARD_MONO("mono")

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