Commodore Plus/4 - Hardware



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Hardware - Commodore Plus/4
Name:	Commodore Plus/4
AKA:	Plus 4, +4, C= +4
Category:	Computer
Introduced:	1984
Manufactured:	Commodore Business Machines (UK) Ltd. (CBM)

This hardware contains
MOS 7360/8360 (Chip) [ edit ]
MOS 7501/8501 (Chip) [ edit ]
C317053-01 (Chip) [ edit ]
C317054-01 (Chip) [ edit ]
C251641-02 (Chip) [ edit ]
C318004-05 (Chip) [ edit ]
C318006-01 (Chip) [ edit ]
MOS 6529B (Chip) [ edit ]
C318004-04 (Chip) [ edit ]

Commodore Plus/4
64K RAM (60K available for BASIC programming) Full Typewriter Style Keyboard Optional Built-in Software Screen Window Capability HELP Key 8 Pre-programmed, Reprogrammable Function Keys Four Separate Cursour Keys Uses Most COMMODORE 64 and VIC-20 Peripherals 121 Colors (16 primary colours, 8 luminance levels) Over 75 BASIC Commands High Resolution Graphics Plotting Split-Screen Text With High-Res Graphics Graphics Character Set On Keyboard Keyboard Color Controls 320 x 200 Pixel Screen Resolution Reverse and Flashing Characters 2 Tone Sound Generators Built-In Machine Language Monitor (17 commands)

Case Design
The case designing had been worked out by Ira Velensky, who also designed the Commodore 116 case. Ira moved to Atari in the mid-80s and was the designer on the ST and XE computers as well. Bil Herd says: "The design [of the Plus/4] was by a guy named Ira Velinsky who worked out of the Tokyo office. He had designed the case for the DEC Rainbow prior to coming to Commodore. Sadly Ira passed away on the return trip from a CES show some years later."

Hardware (owned by members)
Hardware	Country	Serial Number	Condition	Status	Other Data	Notes
Gaia	West-Germany	DA4 13 512			Connector: Rectangle
Gaia	West-Germany	DA4 80 930			Connector: Rectangle
Trond			Dead as a door nail.			C64 power connector.
Trond	Japan	AA4 000133				[ front ] [ label ] [ inside ]
Csabo	West-Germany	DA4 146 509			Connector: Rectangle	Untested
Spektro		EA5 243874	Good
Spektro		EA4 170336	Poor			Working but slightly damaged keyboard cable. Power source's bottom plate is broken.
Ati	West-Germany	DA4 01912	good with box	working with new8501		from my childhood :)
Retroshire
siz	West-Germany	DA4 142413	good, boxed (my firs	working	Power connector: round
Ati	West-Germany	DA4 11575	good with box	working
Dan Wood	England	EA4 220850			Connector: Rectangle	[ Source ]
Matteo Turchi						[ Source ]
Bob Mockford	England	EA4 227151				[ Source ]
Bob Mockford	England	EA4 228365				[ Source ]
Bob Mockford	England	EA5 198388				[ Source ]
Ville Jouppi		CA 1154917	Mint			NTSC [ Source ]
Ville Jouppi		DA4 55131	Mint			[ Source ]
Danish Data History Association	England	EA4 207510				[ Source ]
Raúl Alves Santos	England	EA4 184868	Working			[ Source ]
The-Liberator.net	England	EA4 189569				[ Source ]
Juha Kouri						[ Source ]
James S						[ Source ]
York University Computer Museum		CA 1043221				[ Source ]
Steven Combs		CA 1204966				[ Source ]
George
Litwr					I used it in 1987-91, I sold it in 1991	It worked good. I bought it in Poland.
TLC	West-Germany	DA4 12373				Project machine, various hardware hacks, resurrected from wreckage. Probably one of the computers from the 1986 Hungarian school computer program.
TLC	England	EA4 236551				A stock Plus/4 that I keep for reference. Bought in 1995 "for parts or not working".
TLC	USA	CA1159025				NTSC.
SyamiMan		DA4 132988	Working			[ Source ]
SukkoPera
PARALAX
AvidRetro		EA5 194003	Working			[ Source ]
Chris
Chris
Chris
OldSkoolCoder		EA4 175037	Working			[ Source ]
38 found.

The Commodore Plus/4

Right Side View

Left side view

Back View

Trademark
This document testifies to the choice of the "Plus / 4" trademark.

Plus/4 Magazine Advertisment
Click here for large version (360 Kb)

Plus/4 TV Commercial
A TV commercial for the Plus/4 produced by US based liquidator Urban General. Click here to view the commercial (MPEG, length 1:00, size 4MB)

Early Commodore Plus/4
Rob Clarke has found this Plus/4 model with serial number "AA1 000023" and a sign about the lack of FCC approval yet. It also shows a couple of red stickers relative to the FCC approval reached. Bil Herd has commented:"Ah, now I remember. This was one of the units I took to Radiation Sciences in Harleysville PA. Basically spent a week as we scanned all of the configurations, passed, and submitted to FCC. The asset tag thing would be how it was identified so I could carry it out the front door.".