Please check the 8080/z80 code.. You can run and test this chip without any memory(program) to check the signals generated by the CPU (Adress, M1, MREQ, RD, ....etc). <br />The code 00 -> NOP or the code 0FFH -> RST 7/RST38H<br />So either short the data bus to ground or to V+, the CPU will run..<br />However the Addr bus patterns captured are different for the above two data bus shortting methods.<br />How different?? Think it!<br /><br />Happy Z80 working..<br />73,Li.<br /><br />
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