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https://github.com/holub/mame
synced 2025-10-04 16:34:53 +03:00
Moved SMPC intback command inside a timer, removes a kludge for SMPC mask irq [Angelo Salese]
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Angelo Salese
parent
10701a9978
commit
349ff02ed4
@ -364,12 +364,12 @@ static READ8_HANDLER( stv_SMPC_r8 )
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static TIMER_CALLBACK( stv_bankswitch_state )
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{
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saturn_state *state = machine.driver_data<saturn_state>();
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static const char *const keynames[] = { "game0", "game1", "game2", "game3" };
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static const char *const banknames[] = { "game0", "game1", "game2", "game3" };
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UINT8* game_region;
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if(state->m_prev_bankswitch != param)
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{
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game_region = machine.region(keynames[param])->base();
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game_region = machine.region(banknames[param])->base();
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if (game_region)
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memcpy(machine.region("abus")->base(), game_region, 0x3000000);
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@ -437,10 +437,11 @@ static void smpc_change_clock(running_machine &machine, UINT8 cmd)
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machine.device("slave")->set_unscaled_clock(xtal/2);
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machine.device("audiocpu")->set_unscaled_clock(xtal/5);
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state->m_vdp2.pixel_clock = cmd;
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state->m_vdp2.dotsel = cmd ^ 1;
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stv_vdp2_dynamic_res_change(machine);
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device_set_input_line(state->m_maincpu, INPUT_LINE_NMI, PULSE_LINE); // ff said this causes nmi, should we set a timer then nmi?
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/* TODO: VDP1 / VDP2 / SCU / SCSP default power ON values */
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}
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static void smpc_intbackhelper(running_machine &machine)
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@ -476,9 +477,13 @@ static void smpc_intbackhelper(running_machine &machine)
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}
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/* sys_type 1 == STV, 0 == SATURN */
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static void smpc_intback(running_machine &machine, UINT8 sys_type,system_time systime)
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static TIMER_CALLBACK( smpc_intback )
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{
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saturn_state *state = machine.driver_data<saturn_state>();
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system_time systime;
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machine.base_datetime(systime);
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UINT8 sys_type = param;
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state->m_smpc_ram[0x21] = (0x80) | ((state->m_NMI_reset & 1) << 6);
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if(sys_type == 0)
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@ -496,8 +501,15 @@ static void smpc_intback(running_machine &machine, UINT8 sys_type,system_time sy
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//state->m_smpc_ram[0x33]=input_port_read(space->machine(), "FAKE");
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state->m_smpc_ram[0x35]=0x00;
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state->m_smpc_ram[0x37]=0x00;
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state->m_smpc_ram[0x35]= 0 << 7 |
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state->m_vdp2.dotsel << 6 |
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1 << 5 |
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1 << 4 |
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0 << 3 | //MSHNMI
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1 << 2 |
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0 << 1 | //SYSRES
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0 << 0; //SOUNDRES
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state->m_smpc_ram[0x37]= 0 << 6; //CDRES
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state->m_smpc_ram[0x39]=sys_type ? 0xff : state->m_smpc.SMEM[0];
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state->m_smpc_ram[0x3b]=sys_type ? 0xff : state->m_smpc.SMEM[1];
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@ -532,7 +544,8 @@ static void smpc_intback(running_machine &machine, UINT8 sys_type,system_time sy
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// /*This is for RTC,cartridge code and similar stuff...*/
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//if(LOG_SMPC) logerror ("Interrupt: System Manager (SMPC) at scanline %04x, Vector 0x47 Level 0x08\n",scanline);
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device_set_input_line_and_vector(state->m_maincpu, 8, (stv_irq.smpc) ? HOLD_LINE : CLEAR_LINE, 0x47);
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if(stv_irq.smpc)
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device_set_input_line_and_vector(state->m_maincpu, 8, HOLD_LINE, 0x47);
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}
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static void smpc_rtc_write(running_machine &machine)
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@ -672,7 +685,7 @@ static WRITE8_HANDLER( stv_SMPC_w8 )
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/*"Interrupt Back"*/
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case 0x10:
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if(LOG_SMPC) logerror ("SMPC: Status Acquire\n");
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smpc_intback(space->machine(),1,systime);
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space->machine().scheduler().timer_set(attotime::from_msec(16), FUNC(smpc_intback),1); //TODO: variable time
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break;
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/* RTC write*/
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case 0x16:
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@ -716,36 +729,32 @@ static READ8_HANDLER( saturn_SMPC_r8 )
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if (offset == 0x75)//PDR1 read
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{
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/*
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PORT_START("JOY1")
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PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
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PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
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PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
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PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
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PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_START ) PORT_PLAYER(1) // START
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PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("P1 A") PORT_PLAYER(1) // A
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PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("P1 B") PORT_PLAYER(1) // B
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PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("P1 C") PORT_PLAYER(1) // C
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PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_BUTTON8 ) PORT_NAME("P1 R") PORT_PLAYER(1) // R
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PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("P1 X") PORT_PLAYER(1) // X
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PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_NAME("P1 Y") PORT_PLAYER(1) // Y
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PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_NAME("P1 Z") PORT_PLAYER(1) // Z
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PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_NAME("P1 L") PORT_PLAYER(1) // L
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*/
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if (state->m_smpc.IOSEL1)
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{
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int hshake;
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const int shift_bit[4] = { 4, 12, 8, 0 };
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hshake = (state->m_smpc.PDR1>>5) & 3;
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if (LOG_SMPC) logerror("SMPC: SH-2 direct mode, returning data for phase %d\n", hshake);
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return_data = 0x9f;
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switch (hshake)
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{
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case 0:
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return_data = 0x90;
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// return_data = 0xf0 | ((input_port_read(space->machine(), "JOY1")>>4) & 0xf);
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break;
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case 1:
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// return_data = 0xf0 | ((input_port_read(space->machine(), "JOY1")>>12) & 0xf);
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break;
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case 2:
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// return_data = 0xf0 | ((input_port_read(space->machine(), "JOY1")>>8) & 0xf);
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break;
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case 3:
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return_data = 0x94;
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// return_data = 0xf0 | (input_port_read(space->machine(), "JOY1")&0x8) | 0x4;
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break;
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}
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return_data = 0x80 | 0x10 | ((input_port_read(space->machine(), "JOY1")>>shift_bit[hshake]) & 0xf);
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}
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}
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@ -856,7 +865,7 @@ static WRITE8_HANDLER( saturn_SMPC_w8 )
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/*"Interrupt Back"*/
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case 0x10:
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if(LOG_SMPC) logerror ("SMPC: Status Acquire (IntBack)\n");
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smpc_intback(space->machine(),0,systime);
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space->machine().scheduler().timer_set(attotime::from_msec(16), FUNC(smpc_intback),0); //TODO: variable time
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break;
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/* RTC write*/
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case 0x16:
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@ -1352,7 +1361,7 @@ static WRITE32_HANDLER( saturn_scu_w )
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stv_irq.timer_1 = (((state->m_scu_regs[40] & 0x0010)>>4) ^ 1);
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stv_irq.dsp_end = (((state->m_scu_regs[40] & 0x0020)>>5) ^ 1);
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stv_irq.sound_req = (((state->m_scu_regs[40] & 0x0040)>>6) ^ 1);
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stv_irq.smpc = (((state->m_scu_regs[40] & 0x0080)>>7)); //NOTE: SCU bug
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stv_irq.smpc = (((state->m_scu_regs[40] & 0x0080)>>7) ^ 1); //NOTE: SCU bug
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stv_irq.pad = (((state->m_scu_regs[40] & 0x0100)>>8) ^ 1);
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stv_irq.dma_end[2] = (((state->m_scu_regs[40] & 0x0200)>>9) ^ 1);
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stv_irq.dma_end[1] = (((state->m_scu_regs[40] & 0x0400)>>10) ^ 1);
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@ -1842,6 +1851,7 @@ static INPUT_PORTS_START( saturn )
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PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_NAME("P1 Z") PORT_PLAYER(1) // Z
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PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_NAME("P1 L") PORT_PLAYER(1) // L
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PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_BUTTON8 ) PORT_NAME("P1 R") PORT_PLAYER(1) // R
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PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNUSED ) //read '1' when direct mode is polled
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PORT_START("JOY2")
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PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
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@ -1857,6 +1867,7 @@ static INPUT_PORTS_START( saturn )
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PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_NAME("P2 Z") PORT_PLAYER(2) // Z
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PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_NAME("P2 L") PORT_PLAYER(2) // L
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PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_BUTTON8 ) PORT_NAME("P2 R") PORT_PLAYER(2) // R
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PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNUSED ) //read '1' when direct mode is polled
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INPUT_PORTS_END
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#define STV_PLAYER_INPUTS(_n_, _b1_, _b2_, _b3_) \
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@ -2631,8 +2642,6 @@ static MACHINE_RESET( stv )
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state->m_prev_bankswitch = 0xff;
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}
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static MACHINE_CONFIG_START( saturn, saturn_state )
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/* basic machine hardware */
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@ -59,7 +59,7 @@ public:
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struct {
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UINT8 *gfx_decode;
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bitmap_t *roz_bitmap[2];
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UINT8 pixel_clock;
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UINT8 dotsel;
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}m_vdp2;
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struct {
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@ -73,6 +73,7 @@ public:
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int smpcSR;
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int pmode;
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UINT8 SMEM[4];
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UINT8 intback;
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}m_smpc;
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/* Saturn specific*/
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@ -5331,7 +5331,7 @@ static int get_pixel_clock(running_machine &machine)
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saturn_state *state = machine.driver_data<saturn_state>();
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int res,divider;
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res = state->m_vdp2.pixel_clock ? MASTER_CLOCK_320 : MASTER_CLOCK_352;
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res = state->m_vdp2.dotsel ? MASTER_CLOCK_352 : MASTER_CLOCK_320;
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/* TODO: divider is ALWAYS 8, this thing is just to over-compensate for MAME framework faults ... */
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divider = 8;
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