trunk/src/mess/drivers/c65.c
| r243201 | r243202 | |
|---|
| 72 | 72 | |
| 73 | 73 | virtual void video_start(); |
| 74 | 74 | private: |
| 75 | | UINT8 m_VIC2_IRQMask; |
| 76 | | UINT8 m_VIC3_ControlA; |
| 75 | UINT8 m_VIC2_IRQPend, m_VIC2_IRQMask; |
| 76 | UINT8 m_VIC3_ControlA,m_VIC3_ControlB; |
| 77 | 77 | void PalEntryFlush(UINT8 offset); |
| 78 | 78 | void DMAgicExecute(address_space &space,UINT32 address); |
| 79 | 79 | }; |
| r243201 | r243202 | |
|---|
| 100 | 100 | case 0x12: |
| 101 | 101 | res = (m_screen->vpos() & 0xff); |
| 102 | 102 | return res; |
| 103 | case 0x19: |
| 104 | return m_VIC2_IRQPend; |
| 103 | 105 | case 0x30: |
| 104 | 106 | return m_VIC3_ControlA; |
| 107 | case 0x31: |
| 108 | return m_VIC3_ControlB; |
| 105 | 109 | } |
| 106 | 110 | |
| 107 | 111 | if(!space.debugger_access()) |
| r243201 | r243202 | |
|---|
| 113 | 117 | { |
| 114 | 118 | switch(offset) |
| 115 | 119 | { |
| 120 | case 0x19: |
| 121 | m_VIC2_IRQPend = data & 0x8f; |
| 122 | break; |
| 116 | 123 | case 0x1a: |
| 117 | 124 | m_VIC2_IRQMask = data & 0xf; |
| 118 | 125 | break; |
| r243201 | r243202 | |
|---|
| 122 | 129 | */ |
| 123 | 130 | //case 0x2f: break; |
| 124 | 131 | case 0x30: |
| 125 | | printf("CONTROL A %02x\n",data); |
| 132 | if((data & 0xfe) != 0x64) |
| 133 | printf("CONTROL A %02x\n",data); |
| 126 | 134 | m_VIC3_ControlA = data; |
| 127 | 135 | break; |
| 136 | case 0x31: |
| 137 | printf("CONTROL B %02x\n",data); |
| 138 | m_VIC3_ControlB = data; |
| 139 | break; |
| 128 | 140 | default: |
| 129 | 141 | if(!space.debugger_access()) |
| 130 | 142 | printf("%02x %02x\n",offset,data); |
| r243201 | r243202 | |
|---|
| 180 | 192 | |
| 181 | 193 | switch(cmd & 3) |
| 182 | 194 | { |
| 195 | case 0: // copy - TODO: untested |
| 196 | { |
| 197 | if(length != 1) |
| 198 | printf("DMAgic %s %02x -> %08x %04x (CHAIN=%s)\n",dma_cmd_string[cmd & 3],src,dst,length,cmd & 4 ? "yes" : "no"); |
| 199 | UINT32 SourceIndex; |
| 200 | UINT32 DestIndex; |
| 201 | UINT16 SizeIndex; |
| 202 | SourceIndex = src & 0xfffff; |
| 203 | DestIndex = dst & 0xfffff; |
| 204 | SizeIndex = length; |
| 205 | do |
| 206 | { |
| 207 | space.write_byte(DestIndex++,space.read_byte(SourceIndex++)); |
| 208 | SizeIndex--; |
| 209 | }while(SizeIndex != 0); |
| 210 | |
| 211 | return; |
| 212 | } |
| 183 | 213 | case 3: // fill |
| 184 | 214 | { |
| 185 | 215 | /* TODO: upper bits of source */ |
| r243201 | r243202 | |
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| 218 | 248 | // CIA |
| 219 | 249 | } |
| 220 | 250 | |
| 221 | | return 0xff; |
| 251 | return 0; |
| 222 | 252 | } |
| 223 | 253 | |
| 224 | 254 | WRITE8_MEMBER(c65_state::CIASelect_w) |
| r243201 | r243202 | |
|---|
| 238 | 268 | } |
| 239 | 269 | |
| 240 | 270 | static ADDRESS_MAP_START( c65_map, AS_PROGRAM, 8, c65_state ) |
| 241 | | AM_RANGE(0x00000, 0x01fff) AM_RAM // TODO: bank |
| 271 | AM_RANGE(0x00000, 0x07fff) AM_RAM // TODO: bank |
| 242 | 272 | AM_RANGE(0x0c800, 0x0cfff) AM_ROM AM_REGION("maincpu", 0xc800) |
| 243 | 273 | AM_RANGE(0x0d000, 0x0d07f) AM_READWRITE(vic4567_dummy_r,vic4567_dummy_w) // 0x0d000, 0x0d07f VIC-4567 |
| 244 | 274 | AM_RANGE(0x0d080, 0x0d081) AM_READ(dummy_r) // 0x0d080, 0x0d09f FDC |
| r243201 | r243202 | |
|---|
| 353 | 383 | |
| 354 | 384 | INTERRUPT_GEN_MEMBER(c65_state::vic3_vblank_irq) |
| 355 | 385 | { |
| 356 | | if(m_VIC2_IRQMask & 1) |
| 357 | | m_maincpu->set_input_line(M4510_IRQ_LINE,HOLD_LINE); |
| 386 | //if(m_VIC2_IRQMask & 1) |
| 387 | // m_maincpu->set_input_line(M4510_IRQ_LINE,HOLD_LINE); |
| 358 | 388 | } |
| 359 | 389 | |
| 360 | 390 | static MACHINE_CONFIG_START( c65, c65_state ) |