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VGA on a Tandy 1000 wasn't all that unusual. Most if not all of the earlier Tandy 1000 models that had ISA slots could take a VGA card in them. The hardware worked fine (it's just memory bus accesses under 1mb and I/O port instructions), it just depended on software support to do anything with it. Tandy's magazine PCM often listed and rated add-in VGA cards. I remember reading of a later version of DeskMate that supported VGA resolution.

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The late Lonnie Falk would have been happy to see that PCM did such a good job of covering Radio Shack's computers that it is thought of as Tandy's magazine. Falsoft's line of magazines covering that area probably added at least a few million to Tandy's bottom line.

Most Tandys with 8-bit ISA slots could not take a VGA card because the internal graphics chip could not be disabled. It was only the later series where that became an option.

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