23 Jun 2014 — Test Program (1985)(Sinclair Research) : Free Download, Borrow, and Streaming : Internet Archive. Internet Archive Test Program - World of Spectrum
In the mid-1980s, Sinclair’s ZX Spectrum was a marvel of affordable computing, but it was also notoriously finicky. The infamous "RAM pack wobble" could crash a game mid-jump, and a failing lower RAM chip often manifested as a blank screen with a distinctive buzzing sound—a death knell for many hobbyists. zx spectrum test program link
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