Re: Question(s) on AST RAMSTAK Plus & AE Vulcan Hard Drive

[David Wilson <mcs6502@gmail.com>]

On Dec 9, 4:24 pm, capknight <cepheusfi...@gmail.com> wrote:
> The AST looks pretty cool! I was able to track down some 64k 120NS
> EEPROMS on digikey as well as some 256k 120NS chips. The AST
> documentation (it actually came with the box, manual, disk and card..
> wow..) doesn't list 64 Kb or 256 Kb as an EEPROM option. The
> documentation lists 2Kb - 32Kb per socket for the EEPROM and 8 Kb - 64
> Kb for the EPROM. It also lists 200 ns for both.
>
> I'm wondering if anyone has tried using larger or faster EEPROMs with
> the card (or if anyone has used the card at all). Looks pretty cool to
> have GS/OS in ROM.

I have one of those cards as well.

The 32KB 28256 is the largest 28 pin EEPROM (adding an additional
Address line would require a 29 pins resulting in the use of a 32 pin
chip).

Faster chips would not be a problem.

I ran a 6264 RAM chip in a battery backed Smart Socket on my card for
a while.