HR (TRS-80)

HR (High-Resolution graphics) is an image format that was used on TRS-80 computers. It is a bi-level 640×240 raw bitmap format. It is probably associated with the Grafyx expansion board and/or similar products, without which it was impossible to satisfactorily display such images.

HR files are usually exactly 19200 bytes in size, though we've observed some that are slightly larger.

Software

 * Konvertor
 * RECOIL
 * Deark
 * XnView tries to display HR images, but the version we tested apparently does not work correctly
 * Tom's Editor

Sample files

 * http://whatis.rest7.com/how-to-open-hr-file
 * http://www.classiccmp.org/cpmarchives/trs80/Software/Model%204/ ...
 * A/Assorted HR Files.zip (some images are adult-oriented)
 * G/Geography*.zip
 * H/High Resolution Graphics Files.zip (some images are adult-oriented)

Links

 * The Model 4 Grafyx Solution
 * Links to various utilities for dealing with TRS-80 data