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C > COMMODORE  > PLUS 4 - C232/264/364   

PLUS 4 - C232/264/364

Among the Commodore news from the Summer CES 1984 was the renaming of the C=264 to Plus/4. This renaming came along with a slight change in the built-in software: you could not choose between many different programs anymore, but each Plus/4 was delivered with the 3-plus-1 software.

The built-in software is not worth the silicon it is etched in: a word processor (only with 40 columns and can manage documents with only 99 lines of 77 columns), a very small spreadsheet (only 17 columns and 50 lines), a poor graph generator program (which can graphically display data from the sheets, but only in text mode) and a small database (999 records with 17 fields each and only 38 characters by field).
Most of these programs can only be used with a floppy drive.

The Plus/4 can use some of the peripherals of the C=64 or the VIC-20, like the famous MPS-801 dot-matrix printer and the 1541 Disk Drive run well with it but it can't use C=64 programs (unfortunately, it cannot use the same joysticks & Datasette as the C=64/VIC-20).

This machine wasn't built to be a competitor of the C=64, but it wasn’t meant to replace it either. It has an improved BASIC compared to the C=64’s, this one features graphic and sound instructions and a built-in assembler, but has lost lots of interesting C-64 features like great sound chip (SID: Sound Interface Device) or hardware sprites.

The Commodore Plus/4 was an error in the Commodore marketing policy and had no success.



Oh boy, that was my first computer. Failure for Commodore - maybe - but not for me it wasn''t. Thanks to relative lack of games it allowed me to start programming, hacking and cracking (thanks to the built in asm/debug tool). I have a lot of great memories. And there were games, too. I remember playing Mercenary, which was a proper 3d FPP game, with cool wireframe graphics.

Monday 14th November 2016
Lukasz (Poland)

I bought a used one for a hundred francs ( 15 euros) in 1989 2 years after my brother destroyed it. I was sick I would have killed him for that lol

Thursday 30th October 2014
zozo (france)

I got one of these for Christmas in 1984 along with a 1541 disk drive, a 1702 monitor and an MPS-803 Printer and some C64 games. I was seriously bummed when the games wouldn''t work. My folks bought it because the store was out of C64s and he said that this would fill the bill. It didn''t. It was just as limited as the description states. I did like the default color scheme (blue border, white background, black cursor) better than that of the C64 (pale blue boarder and cursor with a light blue background), however.

Thursday 12th July 2012
whitushade (United States)
Open Source Software for Educators


NAME  PLUS 4 - C232/264/364
TYPE  Home Computer
YEAR  1984
BUILT IN LANGUAGE  Commodore BASIC 3.5. Built-in machine code monitor (12 commands)
KEYBOARD  Full stroke 67 keys with 4 function keys and 4 cursor keys
CPU  7501
SPEED  0.89 MHz or 1.76 MHz
RAM  64 KB (60 KB free for user, and 48 KB free when used in high resolution)
ROM  64 KB
TEXT MODES  40 chars x 25 lines
GRAPHIC MODES  several modes, maximum : 320 x 200 dots
COLORS  121 (15 colours x 8 luminances + black)
SOUND  two channels; 4 octaves + white noise
SIZE / WEIGHT  42.3 (W) x 23.9 (D) x 6.7 (H) cm
I/O PORTS  Tape, Cardridge, Joystick (2), User port, Composite (CVBS) video port, memory expansion bus port, serial port, power, RF video
BUILT IN MEDIA  Cassette unit. Provision for 170 KB 5.25'' floppy disc unit
PRICE  £249

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