I have a Rev C Replica I board with Serial daughterboard that I put together a little shy of a year ago and finally got around to finishing it off. I had some broken socket pins which I have since replaced or repair and it seem to power up fine using a recently aquired AT power supply. Two problems:
1. I get this strange character "fade" (for lack of a better term) after the computer is in use for about 10 minutes. I found a thread on a similar problem [characters's dropping in video - help, 4 June 2005] which I will look into further.
2. I am using a generic PC PS/2 keyboard and getting strange character mapping:
keys-> 1 2 3 4 5 6 7 8 9 0 - =
char-> T U ; / 3 * W F
keys->Q W E R T Y U I O P [ ]
char->V M S
keys->A S D F G H J K L ; ' (return)
char-> 9 $ Y
keys->Z X C V B N M , . / (R shift)
char-> G O K [ Q H
Futhermore, with each key press I get two characters displayed i.e. Press Q, get VV, Press 1, get TT...etc.
The problem is persistant and repeatable and does not seem to change by wiggling any connectors.