Re: info cpm board for cbm 8032

Date: Tue, 17 Nov 2009 18:36:20 +0100
Message-ID: <>
Hallo Didier,

As promised:

The unpopulated socket is meant for a 6502. As the you can see there 
is no EPROM onboard. The unpopulated 24 pins socket is NOT meant for 
an ERPOM. Pin 1 and 3 are connected to ground, pin 12 isn't. Pin 2 
is connected to +5V, pin 24 isn't. I have no idea at all what could 
fit there.

The Z80 communicates with the 6502 through the 6821/PIO combination. 
And even there are anomalies; the pins are connected to each other 
in a weird way (or I did something wrong). That rules out that the 
Z80 could address the $A000 expansion for example.

   / __|__
  / /  |_/     Groetjes, Ruud Baltissen
  \ \__|_\

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Received on 2009-11-17 18:00:08

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