TRS-80.org » TMS9918A

The Color-Graf

Matthew Reed — Thu, 19 Feb 2009 18:39:40 +0000

The Color-Graf was a color graphics interface for the TRS-80 Model I and Model III. Sold by Solectronics, the Color-Graf originally cost $260 for the Model I version. That price was later reduced to $195 for the Model I version and $235 for the new Model III version. Solectronics advertised the Color-Graf from 1982 to 1983.

The Mikrokolor Color Graphics Interface

Matthew Reed — Thu, 15 Jan 2009 14:39:37 +0000

The Mikrokolor was a color graphics interface for the TRS-80 Model 100 that was sold by Andreasen's Electronics Research & Development, Inc. The Mikrokolor hardware was designed by Paul Andreasen, the digital interface designed by James Cole, and the software written by Andrew Baird. Andreasen's Electronics Research & Development also sold versions of the Mikrokolor for the Model I, III, 4, and 12 and also the S-100 bus and the Apple II. There was also a $54.00 VHF modulator for the Mikrokolor that operated on channels 7 to 10.

The Mikrokolor fit into much the same category as the later Disk/Video Interface sold by Radio Shack, allowing a Model 100 to be used with a separate monitor. Unlike the Disk/Video Interface, which was black and white only, the Mikrokolor displayed in color.

CHROMAtrs

Matthew Reed — Fri, 19 Dec 2008 22:39:29 +0000

Probably the most popular of the TRS-80 Model I and III color add-ons was the CHROMAtrs, introduced by South Shore Computer Concepts starting in 1982. It was available in several configurations:

a kit without case or power supply cost $99
a kit with case and power supply cost $129
a fully-assembled and tested unit cost $169.

Each CHROMAtrs unit supported both the Model I or Model III and would work with either computer using the proper cable. The Model III cable would also work with the Lobo MAX-80 with a few minor modifications.