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https://github.com/holub/mame
synced 2025-10-06 17:08:28 +03:00
Bad stack pointer read is bad.
This commit is contained in:
Angelo Salese
parent
b05c21dd69
commit
6e0a315ce0
@ -9,4 +9,13 @@ map_imp
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map_offset[0] = (A<<8) | ((X & 0xf) << 16);
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map_offset[1] = (Y<<8) | ((Z & 0xf) << 16);
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map_enable = ((X & 0xf0) >> 4) | (Z & 0xf0);
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logerror("MAP execute\n");
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logerror("0x0000 - 0x1fff = %08x\n",map_enable & 1 ? map_offset[0]+0x0000 : 0x0000);
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logerror("0x2000 - 0x3fff = %08x\n",map_enable & 2 ? map_offset[0]+0x2000 : 0x2000);
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logerror("0x4000 - 0x5fff = %08x\n",map_enable & 4 ? map_offset[0]+0x4000 : 0x4000);
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logerror("0x6000 - 0x7fff = %08x\n",map_enable & 8 ? map_offset[0]+0x6000 : 0x6000);
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logerror("0x8000 - 0x9fff = %08x\n",map_enable & 16 ? map_offset[1]+0x8000 : 0x8000);
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logerror("0xa000 - 0xbfff = %08x\n",map_enable & 32 ? map_offset[1]+0xa000 : 0xa000);
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logerror("0xc000 - 0xdfff = %08x\n",map_enable & 64 ? map_offset[1]+0xc000 : 0xc000);
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logerror("0xe000 - 0xffff = %08x\n",map_enable & 128 ? map_offset[1]+0xe000 : 0xe000);
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prefetch();
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@ -419,6 +419,7 @@ cld_ce_imp
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cle_imp
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read_pc_noinc();
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P &= ~F_E;
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logerror("CLE\n");
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prefetch();
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cli_ce_imp
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@ -6,6 +6,9 @@ C=65 / C=64DX (c) 1991 Commodore
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Attempt at rewriting the driver ...
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TODO:
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- Dies as soon as it enters into DOS ROM (bp 0x9d1a, it never returns due of a bad stack pointer read);
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Note:
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- VIC-4567 will be eventually be added via compile switch, once that I
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get the hang of the system (and checking where the old code fails
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@ -30,7 +33,8 @@ public:
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m_palred(*this, "redpal"),
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m_palgreen(*this, "greenpal"),
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m_palblue(*this, "bluepal"),
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m_dmalist(*this, "dmalist")
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m_dmalist(*this, "dmalist"),
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m_cram(*this, "cram")
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{ }
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// devices
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@ -41,19 +45,26 @@ public:
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required_shared_ptr<UINT8> m_palgreen;
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required_shared_ptr<UINT8> m_palblue;
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required_shared_ptr<UINT8> m_dmalist;
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required_shared_ptr<UINT8> m_cram;
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DECLARE_READ8_MEMBER(vic4567_dummy_r);
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DECLARE_WRITE8_MEMBER(vic4567_dummy_w);
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DECLARE_WRITE8_MEMBER(PalRed_w);
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DECLARE_WRITE8_MEMBER(PalGreen_w);
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DECLARE_WRITE8_MEMBER(PalBlue_w);
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DECLARE_WRITE8_MEMBER(DMAgic_w);
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DECLARE_READ8_MEMBER(CIASelect_r);
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DECLARE_WRITE8_MEMBER(CIASelect_w);
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DECLARE_READ8_MEMBER(dummy_r);
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// screen updates
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UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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DECLARE_PALETTE_INIT(c65);
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DECLARE_DRIVER_INIT(c65);
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DECLARE_DRIVER_INIT(c65pal);
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INTERRUPT_GEN_MEMBER(vic3_vblank_irq);
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protected:
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// driver_device overrides
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virtual void machine_start();
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@ -61,6 +72,8 @@ protected:
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virtual void video_start();
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private:
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UINT8 m_VIC2_IRQMask;
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UINT8 m_VIC3_ControlA;
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void PalEntryFlush(UINT8 offset);
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void DMAgicExecute(address_space &space,UINT32 address);
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};
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@ -87,6 +100,8 @@ READ8_MEMBER(c65_state::vic4567_dummy_r)
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case 0x12:
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res = (m_screen->vpos() & 0xff);
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return res;
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case 0x30:
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return m_VIC3_ControlA;
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}
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if(!space.debugger_access())
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@ -98,11 +113,18 @@ WRITE8_MEMBER(c65_state::vic4567_dummy_w)
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{
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switch(offset)
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{
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case 0x1a:
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m_VIC2_IRQMask = data & 0xf;
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break;
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/* KEY register, handles vic-iii and vic-ii modes via two consecutive writes
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0xa5 -> 0x96 vic-iii mode
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any other write vic-ii mode
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*/
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//case 0x2f: break;
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case 0x30:
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printf("CONTROL A %02x\n",data);
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m_VIC3_ControlA = data;
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break;
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default:
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if(!space.debugger_access())
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printf("%02x %02x\n",offset,data);
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@ -187,13 +209,39 @@ WRITE8_MEMBER(c65_state::DMAgic_w)
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DMAgicExecute(space,(m_dmalist[0])|(m_dmalist[1]<<8)|(m_dmalist[2]<<16));
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}
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READ8_MEMBER(c65_state::CIASelect_r)
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{
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if(m_VIC3_ControlA & 1)
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return m_cram[offset];
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else
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{
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// CIA
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}
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return 0xff;
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}
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WRITE8_MEMBER(c65_state::CIASelect_w)
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{
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if(m_VIC3_ControlA & 1)
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m_cram[offset] = data;
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else
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{
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// CIA
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}
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}
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READ8_MEMBER(c65_state::dummy_r)
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{
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return 0xff;
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}
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static ADDRESS_MAP_START( c65_map, AS_PROGRAM, 8, c65_state )
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AM_RANGE(0x00000, 0x01fff) AM_RAM // TODO: bank
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AM_RANGE(0x0c800, 0x0cfff) AM_ROM AM_REGION("maincpu", 0xc800)
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AM_RANGE(0x0d000, 0x0d07f) AM_READWRITE(vic4567_dummy_r,vic4567_dummy_w) // 0x0d000, 0x0d07f VIC-4567
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// 0x0d080, 0x0d09f FDC
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AM_RANGE(0x0d080, 0x0d081) AM_READ(dummy_r) // 0x0d080, 0x0d09f FDC
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// 0x0d0a0, 0x0d0ff Ram Expansion Control (REC)
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AM_RANGE(0x0d100, 0x0d1ff) AM_RAM_WRITE(PalRed_w) AM_SHARE("redpal")// 0x0d100, 0x0d1ff Red Palette
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AM_RANGE(0x0d200, 0x0d2ff) AM_RAM_WRITE(PalGreen_w) AM_SHARE("greenpal") // 0x0d200, 0x0d2ff Green Palette
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@ -204,10 +252,12 @@ static ADDRESS_MAP_START( c65_map, AS_PROGRAM, 8, c65_state )
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AM_RANGE(0x0d700, 0x0d702) AM_WRITE(DMAgic_w) AM_SHARE("dmalist") // 0x0d700, 0x0d7** DMAgic
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//AM_RANGE(0x0d703, 0x0d703) AM_READ(DMAgic_r)
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// 0x0d800, 0x0d8** Color matrix
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AM_RANGE(0x0dc00, 0x0dfff) AM_READWRITE(CIASelect_r,CIASelect_w) AM_SHARE("cram")
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// 0x0dc00, 0x0dc** CIA-1
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// 0x0dd00, 0x0dd** CIA-2
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// 0x0de00, 0x0de** Ext I/O Select 1
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AM_RANGE(0x0df00, 0x0dfff) AM_RAM // 0x0df00, 0x0df** Ext I/O Select 2 (RAM window?)
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// 0x0df00, 0x0df** Ext I/O Select 2 (RAM window?)
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AM_RANGE(0x0e000, 0x0ffff) AM_ROM AM_REGION("maincpu",0x0e000)
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AM_RANGE(0x10000, 0x1f7ff) AM_RAM
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AM_RANGE(0x1f800, 0x1ffff) AM_RAM // VRAM
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AM_RANGE(0x20000, 0x3ffff) AM_ROM AM_REGION("maincpu",0)
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@ -286,11 +336,33 @@ PALETTE_INIT_MEMBER(c65_state, c65)
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// TODO: initial state?
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}
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static const gfx_layout charlayout =
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{
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8,8,
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0x1000/8,
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1,
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{ RGN_FRAC(0,1) },
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{ 0, 1, 2, 3, 4, 5, 6, 7 },
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{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
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8*8
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};
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static GFXDECODE_START( c65 )
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GFXDECODE_ENTRY( "maincpu", 0xd000, charlayout, 0, 1 ) // another identical copy is at 0x9000
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GFXDECODE_END
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INTERRUPT_GEN_MEMBER(c65_state::vic3_vblank_irq)
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{
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if(m_VIC2_IRQMask & 1)
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m_maincpu->set_input_line(M4510_IRQ_LINE,HOLD_LINE);
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}
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static MACHINE_CONFIG_START( c65, c65_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu",M4510,MAIN_CLOCK)
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MCFG_CPU_PROGRAM_MAP(c65_map)
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MCFG_CPU_VBLANK_INT_DRIVER("screen",c65_state,vic3_vblank_irq)
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/* video hardware */
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MCFG_SCREEN_ADD("screen", RASTER)
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@ -299,9 +371,11 @@ static MACHINE_CONFIG_START( c65, c65_state )
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MCFG_SCREEN_UPDATE_DRIVER(c65_state, screen_update)
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// MCFG_SCREEN_SIZE(32*8, 32*8)
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// MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1)
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MCFG_SCREEN_RAW_PARAMS(MAIN_CLOCK, 525, 0, 320, 525, 0, 240) // mods needed
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MCFG_SCREEN_RAW_PARAMS(MAIN_CLOCK, 910, 0, 320, 525, 0, 240) // mods needed
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MCFG_SCREEN_PALETTE("palette")
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MCFG_GFXDECODE_ADD("gfxdecode", "palette", c65)
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MCFG_PALETTE_ADD("palette", 0x100)
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MCFG_PALETTE_INIT_OWNER(c65_state, c65)
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