Skip to content

Tag: Speedlock

Disk on Spec

µPD765A Disc Controller – Primer

The µPD765A was a prevalent Floppy Disk Controller for many a home computer in the 80's. The Amstrad CPC was no exception. This is a primer for Writing Z80 assembler to access the controller direct. that I'll use for later articles on old school hacking. Want to know more?

Speedlock 1987

Speedlock '87 was a prolific Tape Protection System and Turbo Load for the Amstrad CPC and ZX Spectrum. In this post I look at the protection system and how to hack to it using the same tools available to me in 1987 as a young teenager.