Mini PET (B) - DIY Replacement PET mainboard KIT

(Updated 29/8/20) - New options - Standalone Kit (A) now in separate listing.

A fully functional 6502 based computer, compatible with a Commodore PET 2001N-32 (3032/4032*).

One quarter of the size and the tenth of the power consumption!

40x25 text mode outputs to PAL/NTSC composite video or can drive PET 9" or 12" monitors

Full IEEE-488 port, User port and two datasette ports (KIT A Second port via Pin Header)

Onboard piezo buzzer as found on later PETs.

32K RAM, 28K ROM, selectable BASIC 1/2/4 with support for normal or business** keyboard.

Uses all new, currently in production parts, including WDC 65C02S CPU and W65C21N/22N IO chips.

All parts are through hole for easy assembly. High quality turned pin sockets provided for all ICs.

Available as two self assembly kit options:

Kit A: Stand alone unit with optional 73 key tact switch normal / graphics keyboard / Deluxe Chiclet style. Optionally comes with TFW8b 9V main power supply.

Kit B: Replacement mainboard to fit in PET case, uses the PETs power supply, keyboard, monitor. Powered by your original PET power supply (5 pin or 9 pin). Suitable replacement for 2001/2001N/30xx/40xx PET cases, also 80xx and 80xx-SK but will still be 40 column output.

Options:

SD2PET SD card disk drive, the ideal companion to either kit. Fast loading of PRG files of D64/D80/D82 disk image files from SD card.

Photos show the prototype units, photos of the production unit to follow.

* This is based on 2001N PET technology, 40 column text/character graphics. It does not have the CRTC chip in later 12" monitor PETs.

** Most early PET software was designed for the normal/graphics keyboard (20 key keypad), so any titles which bypass the OS keyboard routines may not work correctly with the business keyboard (11 key keypad). It is possible to support a VIC20/C64 keyboard via an alternate ROM, but this is not recommended as some keys are missing or labelled differently.

16/07/20 - Version bumped to (A)1.45 / (B) 1.55 MINI PET (self assembly kits).

Exclusive to TFW8b.com the MINI PET (A) ships with a BLUE LED, Switches & Buttons #FACT

Tynemouth Software Mini-PET Blog Post