[sdiy] Is the 8048 in PG-200 software programmed ?

[Mike]

> I wonder if the part called M5L8048-067P placed in the
> PG-200 is software programmed, or just another
> standard CPU chip ?... Is there any need getting the
> specific "M5L.....-067P" part or just any 8048 will do ?
>
Most 8048's I've used were mask programmed at the chip makers. There was an
EPROM version called the 8748. I may still have one or two, and indeed
something that will write them.

To replace that 8048 you will need the exact part number.

I haven't done any looking, but I believe there were a number of hacks to
extract code from a mask programmed chip.

Mike