HP 9915A failed 8048

[Tony Duell]

On Sat, Feb 26, 2022 at 5:19 PM js--- via cctalk <cctalk at classiccmp.org> wrote:

> As the chances of success are highly
> improbable, looks like I'm SOL on this
> particular motherboard.

My bench is rather full at the moment and will be for a few more weeks...

But if you get no other help and you can wait a bit, I believe one of
my old EPROM programmers can read the 8048/8748 with the right
adaptor, and the schematic of that is in the manual. I also have a
working (I hope) HP9915. So I could have a go at making said adaptor,
extracting the 8048 from my HP9915, and readng it out. You would then
have to find somebody who could program the ROM image into an 8748.

-tony