Commodore PET disk drive power-up error codes

[Tony Duell]

> [If it is a 2114, it will be the second one I've found dead in PET hardware
>  over the past month - other was was video RAM in a 4032]

FWIW, I've had _lots_ of 2114s fail. I had to replace all of them in my 
8050 (IIRC, if you hvave multiple RAM errors, you get the flash code for 
the lowest bank first, then when you've replaced those you get the code 
for the next bank, and so on...). I  had to replace the video RAMs in my 
TRS-80 Model 3. And the RAM in my HP82163 video interface. And more...

In my experiece the 2114 is one of the least reliable chips ever...

-tony