Questions tagged [8080]

For questions about the Intel 8080 8-bit microprocessor

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Why is the original Altair BASIC (for the 8080 CPU) source code not available on-line?

As described by The Register in 2001, around 1987 journalists and others started asking Bill Gates for a copy of the source code for the original version of Altair (eventually Micro-Soft) BASIC, ...
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Why was the Altair numbered “8800” even though the processor was an 8080?

The Altair 8800 was a computer using the Intel 8080 processor. Why the difference in numbers?
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Manual for DIAGNOSTICS II V1.2 - CPU TEST SUPERSOFT ASSOCIATES

I am building a 8080 emulator. I found some useful test suites here. The emulator passes the first test suite (8080/8085 CPU Diagnostic, version 1.0, by Microcosm Associates), but not the second ( ...