Technology Research Disk Interface Manual

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Beta Disk Interface is a disk interface for ZX Spectrum computers. It was developed by Technology Research Ltd (United Kingdom), in 1984 and released in 1985 with price £109.25 (or £249.75 with one disk drive). Beta 128 Disk Interface is a 1987 version supporting ZX Spectrum 128 machines (difference is in access points addresses). Beta disk interfaces were distributed with TR-DOS operating system in ROM, also attributed to Technology Research Ltd. Latest firmware version is 5.03 (1986). The interface was possibly based on WD1793 chip.

The interface handles single and double sided, 40 and 80 track double density floppy disks, up to 4 drives.

Reference Number :

Date Published : 1984

Manufacturer : Technology Research Ltd

Platform : Disk Interface

This exhibit has a reference ID of CH16213. Please quote this reference ID in any communication with the Centre for Computing History.

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