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    BinaryAssasin

    DOS 6.22 Memmaker "memory test fail"

    I have a 486DX2 66Mhz retrobuild using an IDE to CF as a harddrive and a Gotek Floppy Emulator

    Installation Order:

    MS-DOS 6.22
    MS-DOS 6.22 Supplemental Files
    Windows 3.11

    Run memmaker from...

    BinaryAssasin Today, 10:47 AM Go to last post
    Chuck(G)

    Okay, I remember that Model I used a 1771 for the...

    Okay, I remember that Model I used a 1771 for the disk drive controller, which I normally think of as an 8" controller (cf datasheet). That's what probably caused the brain fart. So, what, <90KB on...

    Chuck(G) Today, 10:32 AM Go to last post
    Chuck(G)

    I assume that you've seen this OIC article...

    I assume that you've seen this OIC article.

    Having programmed very CISCy and RISC mainframes, when everything is said and done, I don't see a lot of difference. I do see that your ISA lacks...

    Chuck(G) Today, 10:21 AM Go to last post
    Al Kossow

    - subroutines - memory indexed addressing the...

    - subroutines
    - memory indexed addressing

    the pdp-8 had the notion of auto-indexed memory locations, which you could use to implement index or stack registers in memory

    it doesn't appear there...

    Al Kossow Today, 09:50 AM Go to last post
    mmruzek

    Optimal Instruction Set for Homebrew Computer?

    Hi, I have built a homebrew computer using TTL IC's according to the architecture described by Eckert in his paper "Microprogrammed Versus Hardwired Control Units: How Computers Really Work". The...

    mmruzek Today, 09:36 AM Go to last post