ZX Spectrum. Brand new ULA chip. Retroleum Nebula.

Аватар автора
Китайский автомобильный секрет
I replaced the ULA chip and it works great. I wanted the old chip to test out a fault I had on another Speccy. I had used a 1/4 watt resistor on R60 mod and the 12 volt rail went up to 22 volts. Seems like I took out the yellow digital pin on the ULA. All working OK now.

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