Active Links: 829
Pending Links: 322
Todays Links: 1
Total Articles: 20
Total Categories: 18
Sub Categories: 737

Commodore PET 4032 "Fat 40" Upgrade to 8032
If you have a Commodore PET 4032 with a 12" display you may be able to convert it to an 8032 by adding a few TTL chips, 2114 SRAM chips and moving some jumpers. Here I've explained what I did to upgrade mine and have provided for download the updated ROM needed to use the graphics keyboard in 80 columns.

---

Commodore 1541 IEEE-488 Conversion
Have an old Commodore PET and need a disk drive? IEEE-488 drives made for use with the PET are getting harder to come by. Using a circuit found on the web I've converted the more common Commodore 1541 to be used on the IEEE-488 GP-IB bus.

---

Radio Shack TRS-80 Model II 5.25" Dual Floppy Modification
Lacking 8" media and having a desire to bring this old TRS-80 back to life I've non-destructively modified it to accept dual 5.25" floppy drives. Now booting Pickles & Trout CP/M and ready for other hackery!