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Old 21st Jan 2021, 11:18 pm   #201
ScottishColin
Octode
 
Join Date: May 2012
Location: Perth, Scotland
Posts: 1,762
Default Re: Non-working Commodore PET 3016

Quote:
Originally Posted by SiriusHardware View Post
Mark, are you still having difficulty viewing the circuit daigrams online or was that just on one particular device? If you can't view them at all I can try grabbing them and emailing them to you.

This is where I wish my Sybex 'Programming the 6502' wasn't buried in the garage. It's probably been nibbled away to nothing by Silverfish by now.

I'll have a look to see where the input to RDY comes from on this system.
So according to my poor schematic reading, input to Pin2 on the 6502 comes from Pin23 J4.

http://www.zimmers.net/anonftp/pub/c...N/320349-1.gif

Is that right? Not sure it can be as there's nothing plugged into J4.
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