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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]
This commit is contained in:
Angelo Salese
parent
e31647d3a5
commit
e5d1b03fae
@ -3,6 +3,7 @@
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Tomasz Slanina - analog[at]op.pl
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Change Log
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- 23/08/2012 - Implemented remaining BSU opcodes (Angelo Salese)
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- 21/08/2012 - Fixed SET.F behaviour (Angelo Salese)
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- 20/08/2012 - Fixed a sign bug with CVT.WS opcode (Angelo Salese)
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- 16/08/2012 - Added XB, XH, MPYHW, MOVBSU, ORBSU and ANDNBSU opcodes
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@ -17,7 +18,7 @@
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- CY flag in few floating point opcodes
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(all floating point opcodes are NOT tested!)
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- traps/interrupts/exceptions
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- bitstring opcodes
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- bitstring opcodes currently makes the emulation to drop to 0%
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- timing
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- missing opcodes : trap, caxi
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@ -1089,6 +1090,22 @@ static UINT32 opBSU(v810_state *cpustate,UINT32 op)
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tmp = dsttmp | (srctmp << dstbit);
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W_W(cpustate,dst,tmp);
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break;
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case 0x9: // ANDBSU
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srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
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dsttmp = R_W(cpustate,dst);
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tmp = dsttmp & (~(srctmp << dstbit));
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W_W(cpustate,dst,tmp);
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break;
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case 0xa: // XORBSU
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srctmp = (R_W(cpustate,src) >> srcbit) & 1;
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dsttmp = R_W(cpustate,dst);
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tmp = dsttmp ^ (srctmp << dstbit);
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W_W(cpustate,dst,tmp);
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break;
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case 0xb: // MOVBSU
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@ -1097,6 +1114,14 @@ static UINT32 opBSU(v810_state *cpustate,UINT32 op)
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tmp = (srctmp << dstbit) | dsttmp;
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W_W(cpustate,dst,tmp);
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break;
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case 0xc: // ORNBSU
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srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
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dsttmp = R_W(cpustate,dst);
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tmp = dsttmp | (srctmp << dstbit);
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W_W(cpustate,dst,tmp);
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break;
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case 0xd: // ANDNBSU
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@ -1105,6 +1130,22 @@ static UINT32 opBSU(v810_state *cpustate,UINT32 op)
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tmp = dsttmp & (~(srctmp << dstbit));
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W_W(cpustate,dst,tmp);
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break;
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case 0xe: // XORNBSU
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srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
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dsttmp = R_W(cpustate,dst);
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tmp = dsttmp ^ (srctmp << dstbit);
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W_W(cpustate,dst,tmp);
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break;
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case 0xf: // NOTBSU
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srctmp = ((R_W(cpustate,src) >> srcbit) & 1) ^ 1;
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dsttmp = (R_W(cpustate,dst) & ~(1 << dstbit));
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tmp = (srctmp << dstbit) | dsttmp;
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W_W(cpustate,dst,tmp);
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break;
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default: fatalerror("V810: unemulated BSU opcode %04x\n",op);
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@ -1261,7 +1302,7 @@ static CPU_EXECUTE( v810 )
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if (cpustate->irq_state != CLEAR_LINE) {
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if (!(GET_NP | GET_EP | GET_ID)) {
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if (cpustate->irq_line >=((cpustate->PSW & 0xF0000) >> 16)) {
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if (cpustate->irq_line >((cpustate->PSW & 0xF0000) >> 16)) {
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take_interrupt(cpustate);
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}
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}
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@ -11,18 +11,22 @@
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- 100us / 20us timers
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- sound
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- per-game NVRAM hook-up (wariolnd, vleague, golf, others?)
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- 3dtetris: missing gameplay (writes to framebuffer?)
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- 3dtetris: missing gfxs on gameplay (writes to framebuffer)
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- boundh: game is way too fast
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- galactic: ball goes out of bounds sometimes?
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- golf: black screen on attract mode/gameplay
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- golf: missing gfxs on gameplay (writes to framebuffer)
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- marioten: title screen logo is misplaced if Mario completes his animation
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- nesterfb: ball stops when thrown
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- nesterfb: once that you hit the pins, animation phase takes a while to start
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- redalarm: gameplay doesn't work
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- spaceinv: Taito logo only if you press the button, framebuffer?
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- spaceinv: missing shots
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- vlab: doesn't boot (irq issue?)
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- wariolnd: brightness gets suddently darker during intro, CPU bug?
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- waterwld: doesn't accept start input at title screen;
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- telerobo: crashes if you die
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- telerobo: hangs after winning first match;
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- telerobo: when you beat your opponent, the winning animation has a gfx bug
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(HBias negative numbers?)
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- vlab: doesn't boot (irq issue?)
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- wariolnd: brightness gets suddently darker during intro.
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- waterwld: doesn't accept start input at title screen (regression, it used to work);
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****************************************************************************/
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@ -118,7 +122,7 @@ public:
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int *m_ovr_map;
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UINT16 m_frame_count;
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UINT8 m_displayfb;
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UINT8 m_display_count;
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UINT8 m_drawfb;
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UINT8 m_row_num;
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attotime m_input_latch_time;
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@ -474,6 +478,9 @@ static SCREEN_UPDATE_IND16( vboy_left )
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bitmap.fill(state->m_vip_regs.BKCOL, cliprect);
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int cur_spt;
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if(!(state->m_vip_regs.DPCTRL & 2)) /* Don't bother if screen is off */
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return 0;
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cur_spt = 3;
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for(int i=31; i>=0; i--)
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if (state->display_world(i, bitmap, false, cur_spt)) break;
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@ -487,6 +494,9 @@ static SCREEN_UPDATE_IND16( vboy_right )
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bitmap.fill(state->m_vip_regs.BKCOL, cliprect);
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int cur_spt;
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if(!(state->m_vip_regs.DPCTRL & 2)) /* Don't bother if screen is off */
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return 0;
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cur_spt = 3;
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for(int i=31; i>=0; i--)
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if (state->display_world(i, bitmap, true, cur_spt)) break;
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@ -660,6 +670,10 @@ READ16_MEMBER( vboy_state::vip_r )
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---- ---- x--- ---- FCLK
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---- ---- -x-- ---- SCANRDY (active low)
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---- ---- --xx xx-- DPBSY (current framebuffer displayed)
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---- ---- --10 00-- RFB1
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---- ---- --01 00-- LFB1
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---- ---- --00 10-- RFB0
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---- ---- --00 01-- LFB0
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---- ---- ---- --x- DISP
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*/
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case 0x20: //DPSTTS
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@ -670,12 +684,13 @@ READ16_MEMBER( vboy_state::vip_r )
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if(m_vip_regs.DPCTRL & 2)
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{
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UINT8 DPBSY = machine().rand() & 3;
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if(DPBSY & 2)
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res |= 0x20;
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else if(DPBSY & 1)
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res |= 0x08;
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if(m_row_num < 224/8)
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{
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if(m_displayfb == 0)
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res |= 0x0c;
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else
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res |= 0x30;
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}
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}
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res |= 0x40;
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@ -708,14 +723,13 @@ READ16_MEMBER( vboy_state::vip_r )
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---- ---- ---- --x- XPEN (starts drawing at beginning of game frame)
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---- ---- ---- ---x XPRST (force drawing process to idle)
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*/
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UINT8 drawfb = ((m_displayfb ^ 1) + 1) << 2;
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UINT16 res;
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//printf("%d\n",row_num);
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res = m_vip_regs.XPSTTS & 0x00f3; // empty ^^'
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if(m_vip_regs.XPCTRL & 2 && m_row_num < 224/8) // screen active
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res |= drawfb;
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if(m_vip_regs.XPCTRL & 2 && m_row_num > 224/8) // screen active
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res |= m_drawfb << 2;
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if(m_row_num < 224/8)
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{
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@ -1086,6 +1100,8 @@ static MACHINE_RESET(vboy)
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state->m_vboy_regs.wcr = 0xfc;
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state->m_vboy_regs.kcr = 0x4c;
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state->m_vip_regs.DPCTRL = 2; // ssquash relies on this at boot otherwise no frame_start irq is fired
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state->m_displayfb = 0;
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state->m_drawfb = 0;
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}
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@ -1158,27 +1174,33 @@ void vboy_state::m_scanline_tick(int scanline, UINT8 screen_type)
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m_frame_count++;
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m_display_count ++;
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m_display_count &= 3;
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if(m_frame_count > m_vip_regs.FRMCYC)
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{
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m_set_irq(0x0008); // GAME_START
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m_frame_count = 0;
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}
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if(m_vip_regs.XPCTRL & 2)
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if(m_vip_regs.DPCTRL & 2)
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m_displayfb ^= 1;
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}
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if(scanline == 224)
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{
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m_drawfb = 3;
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m_set_irq(0x4000); // XPEND
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}
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if(scanline == 232)
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{
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m_drawfb &= ~1;
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m_set_irq(0x0002); // LFBEND
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}
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if(scanline == 240)
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{
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m_drawfb &= ~2;
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m_set_irq(0x0004); // RFBEND
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}
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if(scanline == 248)
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{
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