blog:commodore_pet_restoration

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blog:commodore_pet_restoration [2021/11/25 21:14]
john [SuperSoft HR40 Connections]
blog:commodore_pet_restoration [2021/11/25 21:26] (current)
john [Cleaning]
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 ==== Cleaning ==== ==== Cleaning ====
  
-{{:blog:blog:commodore:pet:img20211125200543.jpg?200|}}{{:blog:blog:commodore:pet:img20211125200549.jpg?200|}}{{:blog:blog:commodore:pet:img20211125202157.jpg?200|}}{{:blog:blog:commodore:pet:img20211125202201.jpg?200|}}+Cleaned the inside of the case and sprayed the spots that were starting to rust with a clear lacquer to stop it spreading:
  
-{{:blog:blog:commodore:pet:img20211125205816.jpg?200|}}{{:blog:blog:commodore:pet:img20211125205837.jpg?200|}}{{:blog:blog:commodore:pet:img20211125205930.jpg?200|}}{{:blog:blog:commodore:pet:img20211125205940.jpg?200|}}+{{:blog:blog:commodore:pet:img20211125200543.jpg?500|}} {{:blog:blog:commodore:pet:img20211125200549.jpg?500|}}
  
-Motherboard before and after:+Side of the case half done, with it partially cleaned its easy to see just how dirty it really was:
  
-{{:blog:blog:commodore:pet:img20211125203600.jpg?200|}} {{:blog:blog:commodore:pet:img20211125204321.jpg?200|}}+{{:blog:blog:commodore:pet:img20211125202157.jpg?500|}} {{:blog:blog:commodore:pet:img20211125202201.jpg?500|}} 
 + 
 +Rear of the case has some nasty glue residue from what looks to have been packing tape or possibly even duct tape. Not sure why anyone would have tape stuck to the back of the case??? Also cleaned up the really interesting original supplier case sticker.... they are //long, long// gone now. 
 + 
 +{{:blog:blog:commodore:pet:img20211125205816.jpg?500|}} {{:blog:blog:commodore:pet:img20211125205837.jpg?500|}} 
 + 
 +Case all cleaned and back together. Looking much smarter: 
 + 
 +{{:blog:blog:commodore:pet:img20211125205930.jpg?500|}} {{:blog:blog:commodore:pet:img20211125205940.jpg?500|}} 
 + 
 +Motherboard before and after. I decided with the age of this thing not to go too wild - in the end I just used a soft brush to clean the majority of the dust away and then used alcohol to clean off the tarnished edge connectors. I didn't want to go to the extent of rinsing the entire board. 
 + 
 +{{:blog:blog:commodore:pet:img20211125203600.jpg?500|}} {{:blog:blog:commodore:pet:img20211125204321.jpg?500|}}
  
 ==== SuperSoft HR40 Connections ==== ==== SuperSoft HR40 Connections ====
  
-{{:blog:blog:commodore:pet:img20211125203812.jpg?200|}}{{:blog:blog:commodore:pet:img20211125203820.jpg?200|}}{{:blog:blog:commodore:pet:img20211125203833.jpg?200|}}{{:blog:blog:commodore:pet:img20211125203840.jpg?200|}}{{:blog:blog:commodore:pet:img20211125203849.jpg?200|}}+I took images of how the SuperSoft HiRes graphics board was connected, as it's not just inserted into a ROM socket, but has 3 chip test-leads clipped to the legs of 3 seperate chips. 
 +{{:blog:blog:commodore:pet:img20211125203812.jpg?500|}} {{:blog:blog:commodore:pet:img20211125203820.jpg?500|}} 
 + 
 +{{:blog:blog:commodore:pet:img20211125203833.jpg?500|}} {{:blog:blog:commodore:pet:img20211125203840.jpg?500|}} 
 + 
 + Also something that I did not notice earlier is a stacked (DRAM?) module, soldered on top of another module. This is also definitely non-standard: 
 + 
 +{{:blog:blog:commodore:pet:img20211125203849.jpg?500|}}
  
 ==== Bodge Wires ==== ==== Bodge Wires ====
  
-{{:blog:blog:commodore:pet:img20211125204001.jpg?200|}}{{:blog:blog:commodore:pet:img20211125204017.jpg?200|}}{{:blog:blog:commodore:pet:img20211125204022.jpg?200|}}+On the underside of the board are a small number of bodge wires. They're not held on particularly well, so I don't suppose they are factory fit: 
 + 
 +{{:blog:blog:commodore:pet:img20211125204001.jpg?400|}} 
 + 
 +{{:blog:blog:commodore:pet:img20211125204017.jpg?300|}} {{:blog:blog:commodore:pet:img20211125204022.jpg?300|}} 
 + 
 +==== BASIC 2 Easter Egg ==== 
 + 
 +The PET BASIC V2 easter egg indicates that it has a V2 BASIC ROM (which it should, for a 2001 with full-size keyboard, unlike the early chiclet key model): 
 + 
 +<code> 
 +# The command is: 
 +WAIT6502,X  
 +# Where X is a positive integer and the number of times the easter-egg string is printed 
 +</code>
  
-{{:blog:blog:commodore:pet:img20211125205803.jpg?200|}}+{{:blog:blog:commodore:pet:img20211125205803.jpg?500|}}
  
  
  • blog/commodore_pet_restoration.1637874860.txt.gz
  • Last modified: 2021/11/25 21:14
  • by john