MichalFirst output card to test the functionality of my NED8PC computer.
The card contains only the most important components: 8 LEDs with resistors, a 74HCT574 output latch and an address decoder consisting of 75154 (54145 - 1 of 16 decoder), 74LS32 (4x OR) and 74LS14 (6x NEG). And of course a couple of 100nF capacitors.
The address of the card is 00h and is addressed as an output device by the OUT instruction.
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