Thank you :) well, the IC is socketed but, due to the pin 15 burned out, we can't read the internal programming properly, so there's no way to program a new 8748 (the EPROM version of it)...
I have an update: the pin 21 connected to the key is not "floating", is a square wave, I saw it right now ...
Search found 2 matches
- 27 Jun 2013, 12:23
- Forum: Keyboards
- Topic: Help needed fixing old ASCII keyboard of Apple 2 clone...
- Replies: 5
- Views: 1669
- 27 Jun 2013, 11:59
- Forum: Keyboards
- Topic: Help needed fixing old ASCII keyboard of Apple 2 clone...
- Replies: 5
- Views: 1669
Help needed fixing old ASCII keyboard of Apple 2 clone...
Hi everybody,
Searching for some help about this problem I found this fantastic place! :) So let me introduce myself and the problem,
my name is Gabriele and I'm the director of "Museo dell'Informatica Funzionante", a computer museum in Palazzolo Acreide, Sicilia, ITALY (http://museum.freaknet.org ...
Searching for some help about this problem I found this fantastic place! :) So let me introduce myself and the problem,
my name is Gabriele and I'm the director of "Museo dell'Informatica Funzionante", a computer museum in Palazzolo Acreide, Sicilia, ITALY (http://museum.freaknet.org ...