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

[Gil W.]

So it's either having the factory pre-programmed
M5L8048-067P, or getting a 8748 and copy the software
from a 067P into it ?



--- Mike <profpep at hotmail.com> wrote:

> > 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
> 
> 



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