Microsoft returns to the Altair

Does this run kill-the-bit? (IOW, does anyone know if this is a cycle-accurate emulation?).

Happy enough with my Altair-Duino, which is (pretty much) cycle accurate -- maybe a bit faster than the real thing... (2.5Mhz, perhaps).

        ORG     100H

;

MCYC: LXI H,0014H ; 10

TOP: LXI B,8200H ; 10

TOP2: DCR C ; 5

        JNZ     TOP2            ; 10

        DCR     B               ;  5

        JNZ     TOP2            ; 10

        DCR     L               ;  5

        JNZ     TOP             ; 10

        RET

;

        END

This is a program that should execute in 5 seconds on a 2MHz 8080 -- pretty much 10,000,000 cycles (cycle times on the right).

As to CP/M... Microsoft did produce software for CP/M (8080 and/or Z80) -- Macro Assembler, Fortran, COBOL, BASIC and BASIC compiler and some applications. Spreadsheet, SORT, EDIT (a VERY limited implementation of TOPS-10 SOS -- no line moving, for example). If anyone has seen, or has a copy of the CP/M Microsoft SORT utility... please preserve that artifact.

Another cool project in that area: a modern replica of IMSAI 8080 [1]. (IMSAI 8080 was a hugely successful competitor to Altair)

[1] is not only a replica, it is much more. For example, the project demonstrates an interesting concept of a networked desktop that can be accessed using any web browser.

[1] https://thehighnibble.com/imsai8080/

Read the first comment before watching it....