Identifying a Mystery ISA Card

Richard Cini rich.cini at
Thu Oct 15 18:55:53 CDT 2020

Well, it looks like one of those memory/multi-IO/clock boards like the AST RAMPACK+. I would take a look at this site (which you might already know):

When I was looking for jumpers, etc., for both the AboveBoard AT and BOCARAM I have, I started here. Maybe if you browse the links, something will pop-up. I know that these boards often have special drivers for expanded memory; extended memory should just "show up". I would hope that the other ports/devices (clock, parallel, serial and game) are at standard PC addresses.


On 10/15/20, 6:59 PM, "cctalk on behalf of Sean Ellis via cctalk" <cctalk-bounces at on behalf of cctalk at> wrote:

    Hey all,
    I got this (currently exploded) mystery RAM, RTC, and I/O board out of
    a dead Sanyo luggable the other night, and once I replace the burned
    up tantalums I'd like to put it in my 5150 so I can get a full 640k of
    Question is, does anyone know what this board is? It's a completely
    anonymous board with not even an FCC ID to go off of. I'm assuming the
    RAM is at least strapped right; all the banks are full which should be
    384k, and the Sanyo was a 256k machine = 640k.
    Here's a couple pictures; one's an actual picture of the card and the
    other is a simplified TULARC/TH99-esque vector of what's on the board.

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