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

[Ullrich Peter]

>> I haven't done any looking, but I believe there were a number of hacks 
>> to extract code from a mask programmed chip.
 
>So it's either having the factory pre-programmed M5L8048-067P, or getting 
> 8748 and copy the software from a 067P into it ?

Yes! I didi this with a mask rom version inside the Crumar Bit One and Crumar
Master keyboard and there was NO CODE PROTECTION!
So try to get a functional chip and read it out and copy it to a 8748 or 8749.

Maybe you can find the rom image file (binary or intelhex) somebody could 
burn it for you. If you are in Europe I could make it for you - I have some 
8748 and 8749 left. If you are from the States it would be cheaper to find 
someone near you.

Ciao
Peter

PS: If someone has the PG-200 rom image - please send it to me for my
collection!

http://www.ullrich.at.tt