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r17432 Thursday 23rd August, 2012 at 22:26:25 UTC by Angelo Salese
Implemented remaining BSU opcodes in V810 CPU core [Angelo Salese]

(MESS) Improved framebuffer busy / drawing flags for Virtual Boy, golf doesn't crash anymore and nesterfb does a bit more [Angelo Salese]
[src/emu/cpu/v810]v810.c
[src/mess/drivers]vboy.c

trunk/src/emu/cpu/v810/v810.c
r17431r17432
33  Tomasz Slanina - analog[at]op.pl
44
55 Change Log
6 - 23/08/2012 - Implemented remaining BSU opcodes (Angelo Salese)
67 - 21/08/2012 - Fixed SET.F behaviour (Angelo Salese)
78 - 20/08/2012 - Fixed a sign bug with CVT.WS opcode (Angelo Salese)
89 - 16/08/2012 - Added XB, XH, MPYHW, MOVBSU, ORBSU and ANDNBSU opcodes
r17431r17432
1718    - CY flag in few floating point opcodes
1819        (all floating point opcodes are NOT tested!)
1920  - traps/interrupts/exceptions
20  - bitstring opcodes
21  - bitstring opcodes currently makes the emulation to drop to 0%
2122  - timing
2223  - missing opcodes : trap, caxi
2324
r17431r17432
10911092
10921093            W_W(cpustate,dst,tmp);
10931094            break;
1095         case 0x9: // ANDBSU
1096            srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
1097            dsttmp = R_W(cpustate,dst);
1098
1099            tmp = dsttmp & (~(srctmp << dstbit));
1100
1101            W_W(cpustate,dst,tmp);
1102            break;
1103         case 0xa: // XORBSU
1104            srctmp = (R_W(cpustate,src) >> srcbit) & 1;
1105            dsttmp = R_W(cpustate,dst);
1106
1107            tmp = dsttmp ^ (srctmp << dstbit);
1108
1109            W_W(cpustate,dst,tmp);
1110            break;
10941111         case 0xb: // MOVBSU
10951112            srctmp = (R_W(cpustate,src) >> srcbit) & 1;
10961113            dsttmp = (R_W(cpustate,dst) & ~(1 << dstbit));
r17431r17432
10991116
11001117            W_W(cpustate,dst,tmp);
11011118            break;
1119         case 0xc: // ORNBSU
1120            srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
1121            dsttmp = R_W(cpustate,dst);
1122
1123            tmp = dsttmp | (srctmp << dstbit);
1124
1125            W_W(cpustate,dst,tmp);
1126            break;
11021127         case 0xd: // ANDNBSU
11031128            srctmp = (R_W(cpustate,src) >> srcbit) & 1;
11041129            dsttmp = R_W(cpustate,dst);
r17431r17432
11071132
11081133            W_W(cpustate,dst,tmp);
11091134            break;
1135         case 0xe: // XORNBSU
1136            srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
1137            dsttmp = R_W(cpustate,dst);
1138
1139            tmp = dsttmp ^ (srctmp << dstbit);
1140
1141            W_W(cpustate,dst,tmp);
1142            break;
1143         case 0xf: // NOTBSU
1144            srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
1145            dsttmp = (R_W(cpustate,dst) & ~(1 << dstbit));
1146
1147            tmp = (srctmp << dstbit) | dsttmp;
1148
1149            W_W(cpustate,dst,tmp);
1150            break;
11101151         default: fatalerror("V810: unemulated BSU opcode %04x\n",op);
11111152      }
11121153
r17431r17432
12611302
12621303   if (cpustate->irq_state != CLEAR_LINE) {
12631304      if (!(GET_NP | GET_EP | GET_ID)) {
1264         if (cpustate->irq_line >=((cpustate->PSW & 0xF0000) >> 16)) {
1305         if (cpustate->irq_line >((cpustate->PSW & 0xF0000) >> 16)) {
12651306            take_interrupt(cpustate);
12661307         }
12671308      }
trunk/src/mess/drivers/vboy.c
r17431r17432
1111   - 100us / 20us timers
1212   - sound
1313    - per-game NVRAM hook-up (wariolnd, vleague, golf, others?)
14   - 3dtetris: missing gameplay (writes to framebuffer?)
14   - 3dtetris: missing gfxs on gameplay (writes to framebuffer)
1515    - boundh: game is way too fast
1616    - galactic: ball goes out of bounds sometimes?
17   - golf: black screen on attract mode/gameplay
17   - golf: missing gfxs on gameplay (writes to framebuffer)
1818    - marioten: title screen logo is misplaced if Mario completes his animation
19    - nesterfb: ball stops when thrown
19    - nesterfb: once that you hit the pins, animation phase takes a while to start
2020    - redalarm: gameplay doesn't work
2121    - spaceinv: Taito logo only if you press the button, framebuffer?
2222    - spaceinv: missing shots
23   - vlab: doesn't boot (irq issue?)
24    - wariolnd: brightness gets suddently darker during intro, CPU bug?
25   - waterwld: doesn't accept start input at title screen;
23    - telerobo: crashes if you die
24    - telerobo: hangs after winning first match;
25    - telerobo: when you beat your opponent, the winning animation has a gfx bug
26      (HBias negative numbers?)
27      - vlab: doesn't boot (irq issue?)
28    - wariolnd: brightness gets suddently darker during intro.
29   - waterwld: doesn't accept start input at title screen (regression, it used to work);
2630
2731****************************************************************************/
2832
r17431r17432
118122   int *m_ovr_map;
119123   UINT16 m_frame_count;
120124   UINT8 m_displayfb;
121   UINT8 m_display_count;
125   UINT8 m_drawfb;
122126   UINT8 m_row_num;
123127   attotime m_input_latch_time;
124128
r17431r17432
474478   bitmap.fill(state->m_vip_regs.BKCOL, cliprect);
475479   int cur_spt;
476480
481   if(!(state->m_vip_regs.DPCTRL & 2)) /* Don't bother if screen is off */
482      return 0;
483
477484   cur_spt = 3;
478485   for(int i=31; i>=0; i--)
479486      if (state->display_world(i, bitmap, false, cur_spt)) break;
r17431r17432
487494   bitmap.fill(state->m_vip_regs.BKCOL, cliprect);
488495   int cur_spt;
489496
497   if(!(state->m_vip_regs.DPCTRL & 2)) /* Don't bother if screen is off */
498      return 0;
499
490500   cur_spt = 3;
491501   for(int i=31; i>=0; i--)
492502      if (state->display_world(i, bitmap, true, cur_spt)) break;
r17431r17432
660670      ---- ---- x--- ---- FCLK
661671        ---- ---- -x-- ---- SCANRDY (active low)
662672      ---- ---- --xx xx-- DPBSY (current framebuffer displayed)
673      ---- ---- --10 00-- RFB1
674      ---- ---- --01 00-- LFB1
675      ---- ---- --00 10-- RFB0
676      ---- ---- --00 01-- LFB0
663677      ---- ---- ---- --x- DISP
664678*/
665679      case 0x20:   //DPSTTS
r17431r17432
670684
671685         if(m_vip_regs.DPCTRL & 2)
672686         {
673            UINT8 DPBSY = machine().rand() & 3;
674
675            if(DPBSY & 2)
676               res |= 0x20;
677            else if(DPBSY & 1)
678               res |= 0x08;
687            if(m_row_num < 224/8)
688            {
689               if(m_displayfb == 0)
690                  res |= 0x0c;
691               else
692                  res |= 0x30;
693            }
679694         }
680695
681696         res |= 0x40;
r17431r17432
708723            ---- ---- ---- --x- XPEN (starts drawing at beginning of game frame)
709724            ---- ---- ---- ---x XPRST (force drawing process to idle)
710725            */
711         UINT8 drawfb = ((m_displayfb ^ 1) + 1) << 2;
712726         UINT16 res;
713727
714728         //printf("%d\n",row_num);
715729
716730         res =  m_vip_regs.XPSTTS & 0x00f3; // empty ^^'
717         if(m_vip_regs.XPCTRL & 2 && m_row_num < 224/8) // screen active
718            res |= drawfb;
731         if(m_vip_regs.XPCTRL & 2 && m_row_num > 224/8) // screen active
732            res |= m_drawfb << 2;
719733
720734         if(m_row_num < 224/8)
721735         {
r17431r17432
10861100   state->m_vboy_regs.wcr = 0xfc;
10871101   state->m_vboy_regs.kcr = 0x4c;
10881102   state->m_vip_regs.DPCTRL = 2; // ssquash relies on this at boot otherwise no frame_start irq is fired
1103   state->m_displayfb = 0;
1104   state->m_drawfb = 0;
10891105}
10901106
10911107
r17431r17432
11581174
11591175      m_frame_count++;
11601176
1161      m_display_count ++;
1162      m_display_count &= 3;
1163
11641177      if(m_frame_count > m_vip_regs.FRMCYC)
11651178      {
11661179         m_set_irq(0x0008); // GAME_START
11671180         m_frame_count = 0;
11681181      }
11691182
1170      if(m_vip_regs.XPCTRL & 2)
1183      if(m_vip_regs.DPCTRL & 2)
11711184         m_displayfb ^= 1;
11721185   }
11731186
11741187   if(scanline == 224)
1188   {
1189      m_drawfb = 3;
11751190      m_set_irq(0x4000); // XPEND
1191   }
11761192
11771193   if(scanline == 232)
1194   {
1195      m_drawfb &= ~1;
11781196      m_set_irq(0x0002); // LFBEND
1197   }
11791198
11801199   if(scanline == 240)
1200   {
1201      m_drawfb &= ~2;
11811202      m_set_irq(0x0004); // RFBEND
1203   }
11821204
11831205   if(scanline == 248)
11841206   {

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