.$1 is ZX Spectrum HOBETA format
Key Features: .$1 File Extension
|Created by||Erik Kunze|
What is an .$1 file?
The $1 file extension is mainly related to a Hobeta image format of a TR-DOS file for some ZX Spectrum emulator.
TR-DOS was disk operating system used by ZX Spectrum computers.
Most likely some old format. No further information could be found.