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Pentagon 512kB interface for ZX Spectrum 128K 2 Issue 3 bade by Velesoft in one prototype only. It has Turbo mode, FastIO switch, D40/80 switch, Pentagon 512kB mode switch and Umbrella (unrainer). Recorded by Factor6 on 12-Jan-2010. Music called “AY Is Not A Doorbell“ composed by YERZMYEY. Demo shown is DEVOTION by Antares (c) 1999, originally not working correctly on firm Spectrum 2. For more info look for Pentagon Interface and PROFI Interface at
