1802 problems

[Roger Pugh]

could this be a ram problem.  wasnt the rca 1802 used a lot on 
satellites due to its reliability

by the way..   do you know the voltage / power requirements for an 
original microwriter..     i' havn't powered it up since i bought it!!

Roger


On 31 Dec 2005, at 00:32, Tony Duell wrote:

> Does anyone really know the RCA 1802 processor hardware?
>
> I am still debugging the microwriter, and have not got very far. I have
> an RCA user manual on the processor which seems quite comprehensive, I 
> am
> asusming it's accurate.
>
>
> I thought it was a defective 1802 chip, but another one pulled from an
> old board shows identical behaviour (right down to locking up after
> typing 8 characters on the microwriter keyboard). I can't believe 2 
> have
> failed in exactly the same way. Unless of course this is a well-known
> problem.
>
> Any thoughts?
>
> -tony
>
>