Amiga Hardware DatabaseCompany Pyramid / Omni-Eureka | Date 1992 / 1994 | Amiga A500 | Interface trapdoor slot, Gary socket |
- Chip and/or Fast RAM expansion
- 2 or 4 MB RAM
- 1992:
- 32 DIP sockets
- takes 256k×4 DIPs in groups of 16
- 1994:
- two 72 pin SIMM sockets
- takes 1 or 2 MB SIMMs, sizes cannot be mixed
- the main board connects to the trapdoor slot
- an adaptor board connects to Gary's socket and is plugged into header JP1 on the main board
- 1 MB can be used either as Chip or Fast RAM, depending on the setup
- disable switch
- battery backed up clock
- RAM Setups
- Mode 1: FastRAM expansion only
- no CPU board needed, no soldering required
- jumper JP2 on expansion main board set to "FAST"
- Mode 2: FastRAM and 512kB ChipRAM expansion
- no CPU board needed, but soldering required
- JP2 on the A500 mainboard has to be cut and a cable has to be soldered that connects the middle pad of that jumper with JP3 on the Gary adaptor board
- jumper JP2 on expansion main board set to "CHIP"
- Mode 3: FastRAM and 512kB ChipRAM expansion
- optional CPU board required, no soldering needed
- the CPU board plugs into 68000 socket, the CPU is replaced onto the board
- supplied cable connects the headers JP1 on CPU board and JP2 on Gary adaptor board
- jumper JP2 on expansion main board set to "CHIP"
