Amiga Hardware DatabaseManufacturer Alcotini / Amitech, Denmark | Date 1990 | Amiga A500 | Interface trapdoor slot, Gary socket, CPU slot |
- Memory Expansion
- expansion adds up to 2 MB FastRAM
- sixteen DIP sockets
- supports 256k×4 DIPs (514256), ≤ 100 ns
- accepts DIPs in groups of four giving 0.5, 1, 1.5 or 2 MB configurations
- battery backed up clock
- disable switch (set to disable board)
- the main board connects to the trapdoor slot
- comes with Gary and CPU adapter, which is required for 2 MB RAM - without it, the memory expansion is limited to 512 kB (no Gary or CPU adapter) or to 1.8 MB (only Gary adapter, no CPU board)
- with A500 Rev. 5 boards and Fat Agnus 8372, 512 kB memory can be used as ChipMem, resulting in 1 MB Chip memory in total - for that, both CPU and Gary adaptor boards are necessary
- DIP switch settings
| 1 | 2 | CPU | RAM Configuration |
| OFF | OFF | OFF | 0.5 MB FastRAM |
| ON | OFF | OFF | 1.0 MB FastRAM |
| OFF | ON | OFF | 1.5 MB FastRAM |
| ON | ON | OFF | 2.0 MB FastRAM |
| OFF | OFF | ON | 0.5 MB ChipRAM |
| ON | OFF | ON | 0.5 MB ChipRAM + 0.5 MB FastRAM |
| OFF | ON | ON | 0.5 MB ChipRAM + 1.0 MB FastRAM |
| ON | ON | ON | 0.5 MB ChipRAM + 1.5 MB FastRAM |
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1990-05
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