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The Commodore 264 Series

The C= 364 (64k RAM)

A 264 with a "Magic Voice" speech synthesizer and numeric keypad. (Also known as V364, CV364 and 364V.)

Prototype only? Was it even produced?

The C= 264 (64k RAM)

The machine that became the Plus/4 (I would assume without the 3-plus-1 package).

The C= 232 (32k RAM)

Basically a C= 16 in a plus/4 case with 32k RAM

The C= Plus/4 (64k RAM)

A 264 with TRI-Micro 3-plus-1 software

The C= 116 (16k RAM)

A C= 16 with a chicklet style keyboard in a plus/4 case

The C= 16 (16k RAM)

A stripped-down version of the plus/4 with only 16k RAM and without RS-232. Looks like a black VIC-20.

This information was originally composed by Reginal Cross. He also summarized the 264 article in the CMD Issue #9, Vol 2 Number 4:

The series was originally to be the 264 and 364. They had 60K to basic, and 64K RAM total. This was a very good ratio, and was obviously done by having bank switching between ROM and RAM. They ran on a 7501 or 8501 CPU, which was 6502/6510 compatable. The heart of this line was the TED, or Text Editing Device. It comprised 320 x 200 Pixels, and text of 40 x 25. It had 128 color settings; 121 colors actually (8 blacks). It was made of 16 colors each with 8 luminance settings. The sound, as with the VIC-I used on the VIC-20, was integrated into the graphics chip, and consisted of 3 voices; 2 sound & one noise. Basic was upgraded quite a bit, and new easier to use disk commands were integrated into the new BASIC 3.5, as well as windows, and the graphics commands the C= 64 so desperately needed. Also they included TEDmon, a machine language monitor in ROM to write and debug programs.

The plan changed and the 264 became the plus/4, integrating the 4-in-1 software by TRI-Micro including a word processor, spreadsheet, graphing tool, data manager. These applications were not much more than barely usable. The 364 project was scrapped and the lower-end C= 16 and C= 116 were produced. The C= 16 looked like a black ViC-20, and the 116 was a C= 16 with a chicklet keyboard in a plus/4 case. They had a shameful 16k of RAM, with only 12k usable by BASIC. This was, however, a better ratio than the VIC-20, with only 3k to BASIC. The C= 16 and 116 had no user port; thus no communications or parallel devices. These machines were to target business use, since the C= 64 and VIC-20 had strayed from the original Commodore Business Machines goal of business computers.

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