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   Jupiter Ace chip ID and location > The ROMs

Ace ROM's

  The both the Ace ROM's are in fact 2532 EPROMs. They can store 4096 x 8, - 32,768 bits, ultraviolet-light-erasable, and programmable with the correct EPROM burner. They come in 24 pin DIP type package like the image below.

You can spot the manufacturing code on these chips as "8305", made in 1983 (83) in week five of that year (05).





   The 2532 EPROMs can operate from a single +5V supply (in the read mode). No pull up resistor are required, static operation, no clocks or refresh. All inputs / outputs to the chip can be driven be 74 series TTL circuits, of which the Ace is built from. A full data sheet on the 2532 EPROMs click here




For an image of the Aces ROM see the ROM's download page.

   The 2532 EPROMS are now very hard to find, also the modern EPROM readers/ burners might not support them which makes building as Ace seem difficult, But we have a simple effective solution with the
EB ROMboard thanks to Edwin.