68k memory map: Difference between revisions
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| Line 9: | Line 9: | ||
| '''Size''' | | '''Size''' | ||
| '''[[68k ASM defines|DEF]] Name''' | | '''[[68k ASM defines|DEF]] Name''' | ||
| '''Delay''' | |||
| '''Description''' | | '''Description''' | ||
|- | |- | ||
| Line 15: | Line 16: | ||
| 1MiB | | 1MiB | ||
| | | | ||
| 1 (5 clks) | |||
| [[68k_vector_table|Vector table]], First fixed bank of the [[68k]] program ROM ([[P ROM]]) | | [[68k_vector_table|Vector table]], First fixed bank of the [[68k]] program ROM ([[P ROM]]) | ||
|- | |- | ||
| Line 21: | Line 23: | ||
|rowspan="2"|64KiB | |rowspan="2"|64KiB | ||
|rowspan="2"|WORKRAM | |rowspan="2"|WORKRAM | ||
|rowspan="2"|0 (4 clks) | |||
| [[68k user RAM|User RAM]] | | [[68k user RAM|User RAM]] | ||
|- | |- | ||
| Line 31: | Line 34: | ||
| 1MiB | | 1MiB | ||
| | | | ||
| 0 (4 clks) | |||
| Second bank of the 68k program ROM (also used for bankswitching and special chips) | | Second bank of the 68k program ROM (also used for bankswitching and special chips) | ||
|- | |- | ||
| Line 37: | Line 41: | ||
| | | | ||
| | | | ||
| 0 (4 clks) | |||
| Input ports (See [[Memory mapped registers]]) | | Input ports (See [[Memory mapped registers]]) | ||
|- | |- | ||
| Line 43: | Line 48: | ||
| | | | ||
| | | | ||
| | |||
| Ouput ports (See Memory mapped registers) | | Ouput ports (See Memory mapped registers) | ||
|- | |- | ||
| Line 49: | Line 55: | ||
| | | | ||
| | | | ||
| 0 (4 clks) | |||
| [[GPU]] ports (See Memory mapped registers) | | [[GPU]] ports (See Memory mapped registers) | ||
|- | |- | ||
| Line 54: | Line 61: | ||
| $401FFF | | $401FFF | ||
| 8KiB | | 8KiB | ||
| | | PALETTES | ||
| 0 (4 clks) | |||
| Banked [[palette RAM]] | | Banked [[palette RAM]] | ||
|- | |- | ||
| $800000 | | $800000 | ||
| $BFFFFF | | $BFFFFF | ||
| | | 8 MiB max | ||
| | | MEMCARD | ||
| [[Memory card]] | | 2 (6 clks) | ||
| [[Memory card]] | |||
|- | |- | ||
| $C00000 | | $C00000 | ||
| Line 67: | Line 76: | ||
| 128KiB | | 128KiB | ||
| BIOSROM | | BIOSROM | ||
| 0 (4 clks) | |||
| System ROM ([[BIOSes|BIOS]]) | | System ROM ([[BIOSes|BIOS]]) | ||
|- | |- | ||
| Line 73: | Line 83: | ||
| 64KiB | | 64KiB | ||
| | | | ||
| 0 (4 clks) | |||
| [[Backup RAM]] (MVS only) | | [[Backup RAM]] (MVS only) | ||
|} | |} | ||
| Line 130: | Line 141: | ||
| $401FFF | | $401FFF | ||
| 8KiB | | 8KiB | ||
| | | PALETTES | ||
| Banked [[palette RAM]] | | Banked [[palette RAM]] | ||
|- | |- | ||
| Line 136: | Line 147: | ||
| $803FFF | | $803FFF | ||
| 8 KiB | | 8 KiB | ||
| | | MEMCARD | ||
| Virtual memory card (onboard [[battery-backed RAM]])<br> | | Virtual memory card (onboard [[battery-backed RAM]])<br> | ||
(8bit, even bytes are always $FF) | (8bit, even bytes are always $FF) | ||
| Line 143: | Line 154: | ||
| $C7FFFF | | $C7FFFF | ||
| 512KiB | | 512KiB | ||
| | | BIOSROM | ||
| System ROM ([[BIOSes|BIOS]]) | | System ROM ([[BIOSes|BIOS]]) | ||
|- | |- | ||
Revision as of 23:46, 10 July 2012
In Cartridge systems
|
In CD systems
|
For Neo Print boards
Infos from [MAME's source].
| Start | End | Size | DEF Name | Description |
| $000000 | $07FFFF | 512KiB | 68k program (P ROM). | |
| $100000 | $17FFFF | Banked 68k program or I/O (writes done here). | ||
| $200000 | $20FFFF | 64KiB | 68k RAM | |
| $300000 | $30FFFF | 64KiB | Backup RAM | |
| $400000 | $43FFFF | VRAM ? | ||
| $500000 | $51FFFF | 128KiB | Palette RAM | |
| $600000 | $600001 | Z80 I/O | ||
| $600002 | $600003 | RTC I/O | ||
| $600004 | $60000D | I/O registers | ||
| $700000 | $70001B | GPU registers | ||
| 70001E | 70001F | Watchdog |