On 22/11/2015 3:37 PM, Ed Vance wrote:   
   > 11-21-15 12:23 Terry Raymond wrote to All about C64/C-128 MOS chip pin in   
   > Howdy! Terry,   
   >   
   >   TR> @MSGID: <5651A991.1239.cbm@capcity2.synchro.net>   
   >   TR> Hi where could I find all C64/ C-128 MOS chip pin info mainly I need to   
   >   TR> know with each chip where Ground pin is?   
   >   
   > -snip-   
   >   
   > In the "The Anatomy Of the Commodore 64" book by Abacus Software,   
   > I found this information, Hope it helps.   
   >   
   > I.C.      GND Pin   
   > 6510 CPU  21   
   > 6581 SID  14   
   > 6567 VIC  20   
   >   
   > The book says Pin 1 of the 6526 CIA is mass, that may be the GND Pin   
   > since all other pins of that I.C. are signal lines.   
   >   
      
   Yep, pin 1 is GND (Vss) and pin 20 is +5V (Vcc).   
      
   > The Expansion Port has GND at Pins 1, 22, A and Z .   
   >   
   > The User Port has GND at Pins 1,12, A and N .   
   >   
   > I couldn't find the schematic of the C=64 in the back of my copy of   
   > the Commodore 64 Programmers Manual or I would had used that instead   
   > of the Anatomy book.   
   >   
      
   The custom chip description in the PRG also has the pinouts in chapter 7   
   (Appendices).   
      
   In PDF format here:   
      
   http://tinyurl.com/qc5dghw   
      
   And the whole PRG:   
      
   http://tinyurl.com/5oz5zd   
      
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