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  1. I have a Elnec LabProg+ universal programmer that...

    I have a Elnec LabProg+ universal programmer that has to be connected to the LPT port. When I bought a new Asus laptop in 2010, the old one died, I completely forgot about the LPT port until it was...
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    Dead internal cache? Never heard of it. I even...

    Dead internal cache? Never heard of it. I even have no idea if the internal cache can be switched off.

    Is it possible to test the configuration with another 486 CPU
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    In the early days that was the main reason I let...

    In the early days that was the main reason I let this idea go: you really need a decent PCB. The CPU in those days was too expensive for just a hobby project. And PCBs were not cheap then as well....
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    Has anybody ever tried to replace a 80286 with an...

    Has anybody ever tried to replace a 80286 with an 80386-SX?
  5. Thank you very much!

    Thank you very much!
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    What DOS are you using? Don't forget that DOS...

    What DOS are you using? Don't forget that DOS needs RAM as well. And drivers, like a mouse driver, also need RAM. So start with nothing but a loaded COMMAND.COM and run MEM. That will tell you how...
  7. Hi-Lo ALL-03 Universal Programmer - software wanted please

    I received this ALL-03 programmer including four 5.25" diskettes. Unfortunately not all disks were completely readable, including the file "ICTESTER.EXE".

    My question: does anybody have a ZIP of...
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    DOS 3.30 should do. But if I was you I would have...

    DOS 3.30 should do. But if I was you I would have another try with the AST card. IMHO there is no reason it should not work in combination with XTIDE.
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    Yes. The 2114 is 18 pins which means you...

    Yes.


    The 2114 is 18 pins which means you have to cut two pins. Could look ugly. The orientation of the socket does not matter, the computer will work. But it is advised to keep the notch of the...
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    It is just like with cars: sometimes you are...

    It is just like with cars: sometimes you are better off with buying a new/refurbished engine than trying to get it to work by yourself. And even then you can find people who want to buy the original...
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    Why an electric one? I use a hand one most of the...

    Why an electric one? I use a hand one most of the time like this one. If you don't desolder that much, it is good enough.
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    Great idea, I must say! I have seen several PLA...

    Great idea, I must say! I have seen several PLA replacements but this one looks very good. I always like to build things my self and have quite a few 20V8 GALs.
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    Nope. It is a BIOS thing, only the newer AT...

    Nope. It is a BIOS thing, only the newer AT BIOSes supported 1.44 MB.


    IMHO SCSI disk are rare compared to IDE drives and more expensive. So why not using IDE? In combination with XTIDE Universal...
  14. I have done this before, somewhere in the '80s. I...

    I have done this before, somewhere in the '80s. I used the BIOS listing in the AT Reference manual to locate these values, changed the ones that needed to be changed, calculated a new checksum byte...
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    You only need a step-down or a step-up trafo if...

    You only need a step-down or a step-up trafo if you have a power supply (PS) with a different input voltage than is used in AU. For example: the Netherlands use 230V, the US 110V. So using the...
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    I have build a debugger. You'll find a...

    I have build a debugger. You'll find a description and schematics for the 6502 version here. The idea is that you halt the CPU immediately after a reset and start stepping the CPU instruction by...
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    The shape of the cursor is programmed using INT...

    The shape of the cursor is programmed using INT 10h. So something tells the 6845 video IC to use this shape after you quit EDIT and that something is IMHO PC-DOS. Is it possible to start from a...
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    What I did once was soldering the outputs of a...

    What I did once was soldering the outputs of a 9V-3A transformer directly to the pins on the motherboard. Worked fine. Later I found an original trafo, desoldered the cable, problem solved.
    The...
  19. I am sooooo used to deal with PC FDCs that I...

    I am sooooo used to deal with PC FDCs that I completely forgot about this. What about adding a 74138 or 74154 (+ bus drivers) to handle 8 or 16 drives? Then add an extra board that does provide the...
  20. Please have a look at this:...

    Please have a look at this: https://github.com/skiselev/floppy_bios.
    It enable you to have up to 8 floppies. OK, that is not what you need but it should be good enough to act as a driver for your...
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    I cannot help you with the color. Regarding the...

    I cannot help you with the color. Regarding the "holes" and sanding: because of these "holes" you are better off with removing the paint completely. And removing the paint can be done by sanding the...
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    Question, just curiosity: why don't you use the...

    Question, just curiosity: why don't you use the CF card in 16 bits mode? 16 bits mode even allows you to use an HDD parallel to the CF card. And be warned: not all CF card support 8 bits mode.
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    The 7406 near the LS14 is another good candidate...

    The 7406 near the LS14 is another good candidate for causing the problem.
  24. Thread: IML via PCMCIA?

    by Ruud
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    I'm not familiar with the 95A at all but I have...

    I'm not familiar with the 95A at all but I have been working with other types. I only know one thing: if you need an ADF for a certain device, it won't be recognized until the ADF has been loaded. So...
  25. I am always interested in articles that handle...

    I am always interested in articles that handle programming video and sound. I know the name Adlib but that's all. So I went to Wikipedia and read about Adlib. This raised the question: SoundBlaster...
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