HR (TRS-80)

A TRS-80 image, from the line of Tandy/Radio Shack computers of the late 1970s through 1980s, can be found sometimes in a .hr file, presumably standing for "High Resolution". Little seems to be documented online about this format (presumably a raster graphic), but it appears to be one of the formats supported by the XnView software.

Utilities

 * Links to various utilities for dealing with TRS-80 data