The 8048 is a mask programmed part, there is an EPROM version 8748.
While the 8048 is mask programmed I believe that the contents of the ROM
can be dumped.
Paul.
On 2022-02-25 16:09, js--- via cctalk wrote:
Hi, folks.
I've a HP 9915A computer with an interesting problem. The
motherboard utilizes a ceramic Intel D8048 chip. The problem is that
this 8048 has a crack right across the top middle of it, and half of
the top of the chip has begun to separate.
Powering up the machine as-is unsurprisingly results in no
activity. HOWEVER, if I push firmly on the cracked area with my
finger the machine starts to operate normally. All appearances are
that clamping down the separating piece of the chip re-establishes any
broken wire connections within the chip.
I've obtained a replacement P8048AH. My question is: do these
chips simply swap like a CPU, or -- as I fear -- is the 8048 a
pre-programmed piece? More simply put, is this a repairable
problem? Or am I SOL?
Any thoughts welcomed.
- John Singleton
