Amiga Hardware Database Expansion cards



Inboard 500 Photo
Company
Spirit Technology, USA
 Date
1987
 Amiga
A500
 Interface
68000 socket
 Autoconfig ID
2034 / 2
  • 48 DIP sockets accept up to 1.5 MB RAM
  • supports 256k×1 DIPs only
  • accepts DIPs in groups of 16 giving 0.5, 1 or 1.5 MB configurations
  • does not really autoconfig its memory - it recognizes the installed amount, but places the memory outside of the autoconfig space
  • the Inboard may use up about 200 kB of RAM for some custom PAL chips:
    • an 512 kB Inboard and an A501 (or compatible) nets 1.5 MB
    • an 1 MB Inboard without the A501 nets 1.5 MB
    • an 1 MB Inboard and an A501 results about 1.8 MB total
    • an 1.5 MB Inboard gives also 1.8 MB only
  • by turning off the automatic memory recognition and using the AddMem software, the 200 kB loss can be eliminated
  • connects into the 68000 socket
  • the 68000 is replaced onto the board
  • a clip has to be attached to the Gary chip




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