MOS Technology TED

The 7360 Text Editing Device (TED) was an integrated circuit made by MOS Technology, Inc. It was a video chip that also contained sound generation hardware, DRAM refresh circuitry, interval timers, and keyboard input handling. It was designed for the Commodore Plus/4 and 16. Packaging consisted of a JEDEC-standard 48-pin DIP.

The video capabilities provided by the TED were largely a subset of those in the VIC-II. The TED supported five video modes:

These were largely unchanged from the corresponding VIC-II modes aside from different register and memory mapping (see the article on the VIC-II for information on graphics modes). However, the TED lacked the sprite capabilities of the VIC-II, and so game animation had to be done with programmable characters like on the VIC-20. This tended to restrict the graphics of C16/Plus 4 games versus the C64. The TED did include two features that the VIC-II lacked: luminance control and blinking text. Fifteen of its 16 colors (black being the exception) could be assigned one of 8 luminance values, thus making the TED capable of displaying a far wider array of colors than the VIC-II. The full palette of 121 colors is shown below.

The TED featured a simple tone generator that produced two channels of audio. The first channel produced a square wave, and the second could produce either a square wave or white noise. This tone generator was designed for business applications, and did not provide the extensive sound features found in the SID chip.

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