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    Hugo Holden

    Gold can acquire a transparent insulating film,...

    Gold can acquire a transparent insulating film, but it is not normally a problem with sliding contacts, only touch contacts seen in some switch designs and in some DIP switches. On a card's edge...

    Hugo Holden Yesterday, 11:57 PM Go to last post
    Chuck(G)

    Okay, let's start with the 241. First thing to...

    Okay, let's start with the 241. First thing to notice is that in the 8272A data sheet, some pins are input, some are output and some have dual personalities, depending on what's being done. In the...

    Chuck(G) Yesterday, 11:53 PM Go to last post
    MikeP

    Hi Dave_M, I followed your instructions and...

    Hi Dave_M,

    I followed your instructions and there is no signal on UB1-Pin2 (or UB13-Pin18 ). Attached is the scope output.64910

    Regarding the NOP Generator, I do have 40 pin sockets (the...

    MikeP Yesterday, 11:06 PM Go to last post
    A-ko

    5160 no longer booting from good hard drive

    Hey all. Recently got a free 5160 out of an abandoned storage unit. All stock with 512K of ram, original 10mb IBM hard drive and IBM 5.25" floppy drive. The hard drive works, and after a little work,...

    A-ko Yesterday, 09:09 PM Go to last post
    bakemono

    Hmmm, well I have text, data, and bss segments...

    Hmmm, well I have text, data, and bss segments but only one each, without switching. So that could be a disqualifier.

    Oh, that's right. I think old versions like .97 were all 16-bit code in the...

    bakemono Yesterday, 08:37 PM Go to last post