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Commodore P500

The P500 is a member of the shortlived Commodore PET-II family of computers.
These were also known as the CBM II machines, the P series were for personal use, then there were the B Series, which were for business, the 600 and 700 were in this category, and had separate keyboards, this design would later find it's way into the SK model of Pet.
 
The Commodore 600/700 models were designed with 80 column monochrome video, the P500 featured 40 column video, two Atari style joystick ports, and also contained the VIC-II chip that was later available in the C64. Because the timing is controlled by the VIC, it is in fact determined by the video standard in use. So the other difference between the 600/700 computers and the P500 is that in the latter, the 6509 CPU is clocked with about 1MHz, while the former run with 2MHz.
There was an optional Intel 8088 co-processor board, so the computer could run CP/M. Though due to  complications this was never put into full production.
The Commmodore 64 had proved to be a huge hit, and far simpler to make than the P500, which had an over complicated RAM banking system, the machine's launch in the US was cancelled. It did receive a commercial launch in Europe, but was not made in large numbers, and discontinued quickly.
Being expensive to manufacture, and with no retail future against the success of the Vic 20 and C64, the whole CBM II range was cancelled, the technology ending up with the CBUG, the Chicago B128 Users Group, who produced some software for the machine. The only technology from the machines used going forward was the memory banking which was used in the C128.
Feature overview:
 
•Extended BASIC 4.0
•40*25 video mode (16 colors)
•Available with PAL or NTSC video (needs VIC replacement)
•128k memory (one 64k bank is accessible by the VIC)
•Clocked with 1MHz
•Two joystick ports
•User port
•Cartridge port
•Parallel IEEE488 connector
•RS232 port. An ACIA (6551) chip allows baud rates up to 19200
•Builtin machine language monitor
•Optional memory extension (up to 256k internal, up to 1M externally)
•Optional Z80 or 8088 coprocessor boards
 
This information and further details can be found at http://www.von-bassewitz.de/uz/oldcomputers/p500/
 
Our machine is in excellent condition in the original box and has a serial number of 00525

Manufacturer: Commodore
Date: 1982



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Commodore P500 Manuals:

Item Manufacturer Date
Commodore P500 Users Manual Commodore 1982
EXP500 Operating Manual Silver Reed Jun 1983

Other Systems Related To Commodore P500:

Item Manufacturer Date
Commodore PET 3016 Commodore 1977
Commodore PET 2001 Commodore June 1977
Commodore PET 2001 (Blue Label) Commodore June 1977
Commodore PET 2001-32 Commodore June 1978
Commodore PET CBM 3008 Commodore 1979
Commodore PET 3032 Commodore 1979
Commodore Pet 8032-32B Commodore 1980
Commodore PET 8032SK Commodore 1980
Commodore Pet 4032-32N Commodore May 1980
Commodore PET 4008 Commodore May 1980
Commodore SuperPet (SP9000) Commodore 1981
Commodore PET 8096SK Commodore 1981
Commodore VC-20 Commodore 1981
Commodore VIC-20 Commodore 1981
Commodore MAX Commodore 1982
Commodore 64 Commodore August 1982
Commodore Pet 8296-D Commodore 1983
Commodore SX-64 (110v US) Commodore 1983
Commodore SX-64 (240V UK) Commodore 1983
Commodore 116 Commodore June 1984
Commodore 16 Commodore June 1984
Commodore Plus 4 Commodore June 1984
Commodore 128 Commodore January 1985
Commodore 128D Commodore December 1985
Commodore Amiga A2000 Commodore 1987
Commodore Amiga A500 Commodore 1987
Commodore Amiga A500 Class of the 90s Pack Commodore 1987
Commodore PC-I Commodore 1987
Commodore 64 C German Commodore March 1987
Commodore 64 C Hollywood Presents Pack Commodore March 1987
Commodore 64 C Commodore March 1987
Commodore 64 C Terminator 2 Pack Commodore March 1987
Commodore Amiga A500 Plus Commodore April 1987
Commodore 64 G Commodore 1989
Commodore 64 C Light Fantastic Pack Commodore March 1989
Commodore Amiga 1500 Commodore 1990
Commodore C286-LT Portable Commodore 1990
Commodore C386SX-LT Commodore 1991
Commodore Amiga A600HD Commodore 1992
Commodore Amiga A600 Commodore March 1992
Commodore Amiga 4000 Commodore October 1992
Commodore Amiga 1200 Commodore 21st October 1992
Commodore Amiga 1200 Commodore 21st October 1992
Commodore Amiga CD32 Commodore September 1993

This exhibit has a reference ID of CH4861. Please quote this reference ID in any communication with the Centre for Computing History.

 

Commodore P500


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