HR (TRS-80)
From Just Solve the File Format Problem
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
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)