Difference between revisions of "Amiga memory map"
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| colspan="7" | Reserved | | colspan="7" | Reserved | ||
|- | |- | ||
− | | | + | | BF0000-BFFFFF |
− | | | + | | 64KB |
− | | colspan="7" | 8520 | + | | colspan="7" | 8520 CIAs and timers |
|- | |- | ||
− | | | + | | C00000-C7FFFF |
− | | | + | | 512KB |
− | | colspan=" | + | | rowspan="3" | Reserved |
+ | | colspan="2" | Pseudo-fast RAM | ||
+ | | colspan="3" rowspan="2" | Reserved | ||
+ | | rowspan="2" | Chip register shadow | ||
|- | |- | ||
− | | | + | | C80000-CFFFFF |
+ | | 512KB | ||
+ | | colspan="2" rowspan="2" | Reserved for pseudo-fast RAM | ||
+ | |- | ||
+ | | D00000-D7FFFF | ||
| 512KB | | 512KB | ||
− | + | | colspan="4" | Reserved | |
− | |||
− | | colspan=" | ||
|- | |- | ||
− | | | + | | D80000-D9FFFF |
− | | | + | | 128KB |
| colspan="7" | Reserved | | colspan="7" | Reserved | ||
|- | |- | ||
− | | | + | | DA0000-DBFFFF |
− | | | + | | 128KB |
− | | colspan=" | + | | colspan="3" | Reserved |
+ | | colspan="2" | IDE controller | ||
+ | | colspan="2" | Reserved | ||
|- | |- | ||
| DC0000-DCFFFF | | DC0000-DCFFFF | ||
Line 91: | Line 98: | ||
| DD0000-DD0FFF | | DD0000-DD0FFF | ||
| 4KB | | 4KB | ||
− | | colspan="5" | Reserved | + | | colspan="5" rowspan="3" | Reserved |
− | | rowspan=" | + | | rowspan="3" | SCSI controller |
| SCSI controller | | SCSI controller | ||
|- | |- | ||
| DD1000-DD3FFF | | DD1000-DD3FFF | ||
| 12KB | | 12KB | ||
− | |||
| IDE controller | | IDE controller | ||
|- | |- | ||
− | | DD4000- | + | | DD4000-DDFFFF |
− | | | + | | 48KB |
− | |||
| Reserved | | Reserved | ||
+ | |- | ||
+ | | DE0000-DEFFFF | ||
+ | | 64KB | ||
+ | | colspan="7" | Custom chip registers and mainboard resources | ||
|- | |- | ||
| DF0000-DFFFFF | | DF0000-DFFFFF | ||
Line 112: | Line 121: | ||
| 512KB | | 512KB | ||
| colspan="3" | Reserved | | colspan="3" | Reserved | ||
− | | colspan="2" | | + | | colspan="2" | Reserved for first 512KB of 1MB system ROM |
| colspan="2" | Reserved | | colspan="2" | Reserved | ||
|- | |- | ||
Line 134: | Line 143: | ||
| 256KB | | 256KB | ||
| colspan="2" | Reserved | | colspan="2" | Reserved | ||
− | | colspan="5" | | + | | colspan="5" rowspan="2" | System ROM |
|- | |- | ||
| FC0000-FFFFFF | | FC0000-FFFFFF | ||
| 256KB | | 256KB | ||
| colspan="2" | System ROM | | colspan="2" | System ROM | ||
− | |||
|- | |- | ||
! colspan="9" | 32-bit Addresses | ! colspan="9" | 32-bit Addresses | ||
Line 145: | Line 153: | ||
| 01000000 - 03FFFFFF | | 01000000 - 03FFFFFF | ||
| 48MB | | 48MB | ||
− | | colspan="5" rowspan=" | + | | colspan="5" rowspan="8"| N/A |
| colspan="2" | Reserved | | colspan="2" | Reserved | ||
|- | |- | ||
| 04000000-06FFFFFF | | 04000000-06FFFFFF | ||
| 48MB | | 48MB | ||
− | | colspan="2" | Reserved | + | | colspan="2" | Reserved for motherboard RAM expansion |
|- | |- | ||
| 07000000-07FFFFFF | | 07000000-07FFFFFF | ||
Line 168: | Line 176: | ||
| colspan="2" | Reserved | | colspan="2" | Reserved | ||
|- | |- | ||
− | | FF000000- | + | | FF000000-FF00FFFF |
− | | | + | | 64KB |
| colspan="2" | Zorro-III config space | | colspan="2" | Zorro-III config space | ||
+ | |- | ||
+ | | FF010000-FFFFFFFF | ||
+ | | 16320KB | ||
+ | | colspan="2" | Reserved | ||
|} | |} | ||
Revision as of 18:02, 15 September 2016
Standard amount of memory in the Amiga
- Amiga 1000 - 256KB chip RAM
- Amiga 500 - 512KB chip RAM
- Amiga 500+ - 1MB chip RAM
- Amiga 2000 - 512KB chip RAM, later 1MB chip RAM
- Amiga 3000 - 1-2MB chip RAM, 1MB fast RAM
- Amiga 600 - 1MB chip RAM
- Amiga 1200 - 2MB chip RAM
- Amiga 4000 - 2MB chip RAM, 2-4MB fast RAM
Memory map
Address Range | Size | Function | ||||||
---|---|---|---|---|---|---|---|---|
A1000 | A500 / 2000 | A500+ | A600 | A1200 | A3000 | A4000 | ||
000000-03FFFF | 256KB | First 256KB of chip RAM | ||||||
040000-07FFFF | 256KB | 256KB chip RAM expansion card | Second 256KB of chip RAM (to 512KB) | |||||
080000-0FFFFF | 512KB | Reserved | Second 512KB of chip RAM (to 1MB) | |||||
100000-1FFFFF | 1MB | Reserved | Second 1MB of chip RAM (to 2MB) | |||||
200000-5FFFFF | 4MB | First 4 MB Auto-config space / Fast RAM | ||||||
600000-9FFFFF | 4MB | Second 4 MB Auto-config space / Fast RAM | PCMCIA memory card / Fast RAM | Second 4 MB Auto-config space / Fast RAM | ||||
A00000-A7FFFF | 512KB | Reserved | PCMCIA control registers | Reserved | ||||
A80000-BEFFFF | 1471KB | Reserved | ||||||
BF0000-BFFFFF | 64KB | 8520 CIAs and timers | ||||||
C00000-C7FFFF | 512KB | Reserved | Pseudo-fast RAM | Reserved | Chip register shadow | |||
C80000-CFFFFF | 512KB | Reserved for pseudo-fast RAM | ||||||
D00000-D7FFFF | 512KB | Reserved | ||||||
D80000-D9FFFF | 128KB | Reserved | ||||||
DA0000-DBFFFF | 128KB | Reserved | IDE controller | Reserved | ||||
DC0000-DCFFFF | 64KB | Real time clock / Clock port | ||||||
DD0000-DD0FFF | 4KB | Reserved | SCSI controller | SCSI controller | ||||
DD1000-DD3FFF | 12KB | IDE controller | ||||||
DD4000-DDFFFF | 48KB | Reserved | ||||||
DE0000-DEFFFF | 64KB | Custom chip registers and mainboard resources | ||||||
DF0000-DFFFFF | 64KB | Custom chip registers | ||||||
E00000-E7FFFF | 512KB | Reserved | Reserved for first 512KB of 1MB system ROM | Reserved | ||||
E80000-E8FFFF | 64KB | Auto-config space. Boards appear here before the system relocates them to their final address. | ||||||
E90000-EFFFFF | 448KB | Secondary auto-config space (usually 64K I/O boards) | ||||||
F00000-F7FFFF | 512KB | Reserved | Extended ROM (CDTV) | Reserved | Flash ROM / Extended ROM (CD32) | Diagnostic ROM | ||
F80000-FBFFFF | 256KB | Reserved | System ROM | |||||
FC0000-FFFFFF | 256KB | System ROM | ||||||
32-bit Addresses | ||||||||
01000000 - 03FFFFFF | 48MB | N/A | Reserved | |||||
04000000-06FFFFFF | 48MB | Reserved for motherboard RAM expansion | ||||||
07000000-07FFFFFF | 16MB | Motherboard RAM | ||||||
08000000-0FFFFFFF | 128MB | CPU slot expansion | ||||||
10000000-7FFFFFFF | 1792MB | Zorro-III expansion space | ||||||
80000000-FEFFFFFF | 2032MB | Reserved | ||||||
FF000000-FF00FFFF | 64KB | Zorro-III config space | ||||||
FF010000-FFFFFFFF | 16320KB | Reserved |
Note that various modifications and third party hardware can change the details of this map.
Some special addresses: * 000000-000100 - MC680x0 Exception Vector Assignment table (if VBR=0) * 000004 - Exec base (pointer to exec.library jumptable)
Sources for this info
- Amiga Hardware Reference Manual (1986)
- M68000 Programmer's Reference Manual (1984,fourth edition)
- amiga-hardware.com (for standard amount of memory)