PET index - hardware projects
(C) 1998-2010 André Fachat
This page contains links to some hardware projects around the PET machines.
Whatever you do with the information in these pages or on the linked pages, I am not responsible for any damage you have for using this information. The information herein is provided AS-IS and there is no warranty whatsoever!
This section contains projects related to PET peripherals, mostly IEEE488 related.
- CBM-HD
- Ruud Baltissen has made a project to emulate Commodore IEEE488 disk drives using a PC and some hardware.
- LPTIEC and other IEEE488 stuff
- As I have used the IEEE488 bus to connect (almost) all my Commodore equipment, even with my Atari ST and later the PC (as harddrive) I have created a page for it. It contains an IEEE488 interface for the PC to emulate IEEE488 disk drives (using VICE drive code :-), a System to have the PET access serial IEC disk drives, and IEEE488 interfaces for the C64, VIC20 and the VC1541.
- The transfer section of the CBM archive
- Contains a lot of transfer utilities to copy files from the PC to the PET and back.
- Flash Attack cable and sound
- This page contains the description of the "Flash Attack" cable, as well as a PET sound interface.
- The PET library and olcomputers.net have circuits for composite video output.
- One of the deficiencies of the PET is that it has no composite video output to connect normal monitors to it. These links show two circuits (PET library from "THE PET REVEALED" by Nick Hampshire, p117f, 1979, whereas oldcomputers.net claims their circuit is untested). Another sample circuit (well, some resitors basically...) for a 6545 CRTC can be found in my CS/A65 computer. I have now updated the VDC page to include schematics and boards for adapted versions of the abovementioned two composite video circuits to work with my CS/A computer (which comes close to the PET in this respect).
This section describes extensions for the character generator ROM
Character generator RAM
Nils Eilers has managed to replace the - normally fixed - character ROM of the PET with a dual-port RAM card! It is written by mapping the character generator into a PET extension ROM area (switchable). With this you can dynamically change the character set displayed on the screen! Great work!
This section contains projects that relate more to the PET itself
- PET816
- A CPU replacement for the PET that allows it to run at up to 10MHz!
- CS/A65
- This computer system is a modular system with an MMU and other nice features. One feature is the 95% PET compatibility. It actually runs a 3032 PET emulator - which is a slightly patched up copy of the PET ROM (the only difference is the CRTC uses real columns even in 80 col mode, and some IEEE488 lines are swapped around). I plan on building an adapter to use the CS/A65 I/O cards in a PET computer.
- Build your own Fat40
- This project consists of three specific boards for the CS/A65 computer that together can make up a PET 4032.
- PET RAM - a universal 6502 RAM/ROM expansion
- This is a universal PET RAM/Flash ROM expansion with schematics and board diagrams in Eagle(tm) format.
- PET-REU
- This is a RAM expansion unit for the PET, using the (in old boards) unused $8800-$8fff memory area.
- Fitting 8250LP in the high-profile CBM-II case
- A description how to fit the 8250LP disk drive into a high-profile CBM-II case - which is very similar to the 8296 case. So this might be as model to fit a 8250LP into a 8296 case to make a 8296D
This section contains other 6502-related links, that are less PET-related.
Note: schematics and chip data are linked from the links page
- 6502.org with a host of 6502-related stuff and original host of the PET index.
- Ruud Baltissen not only has the CBM-HD, but other Commodore hardware and software projects as well.
- Peripherals info from the PETFAQ, includes for example how to add a Joystick.
- cbmhardware.de has some german info.
Return to Homepage