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Type: Posts; User: Tronix

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  1. Replies
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    http://www.vgamuseum.info/index.php/component/k2/i...

    http://www.vgamuseum.info/index.php/component/k2/item/130-cirrus-logic-cl-gd5402-acumos-avga2 (scroll down and click Download attachments: Bios)
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    Thank you all for the answers. Of course,...

    Thank you all for the answers.

    Of course, installing V20/V30 processor would be a very simple solution. But this is a challenge - run 186 code on 8088. AFAIK, no one has done this before. Some 286...
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    80286 Real Mode emulation on 8088 ?

    Hello,

    is it possible with INT 1 (single step)? By installing our own handler, we can learn the following opcode. Something like this: http://ivanlef0u.fr/repo/madchat/vxdevl/vdat/tudf0001.htm...
  4. I mistake! Right circuit ...

    I mistake! Right circuit

    https://habrastorage.org/webt/-v/zo/hm/-vzohmgilt05kewt4geb2vv0hpy.png
  5. Up^. PCB has three 74LS155 IC, five 74LS38....

    Up^. PCB has three 74LS155 IC, five 74LS38. Sketched a piece of the circuit connected to the cable... Any ideas on how to control the keyboard?

    https://i.ibb.co/Wv94055/P90510-153323.jpg...
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    Simple solution - use LPT port with RC-filter....

    Simple solution - use LPT port with RC-filter. For Micro$oft GWBASIC/BASIC we need hook int 15h, so small TSR program (with source code) can be found here:...
  7. Thread: Wolfenstein?

    by Tronix
    Replies
    16
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    1,434

    And this is the version for NEC V20 that shows...

    And this is the version for NEC V20 that shows the current FPS in the lower left corner.
  8. Thread: Wolfenstein?

    by Tronix
    Replies
    16
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    1,434

    I recompile Wolf 3D for NEC V20 CPU. This is...

    I recompile Wolf 3D for NEC V20 CPU. This is easier than making 8088 version. All that is needed is to remove the check for the 286 processor and remove the initialization of the XMS memory (because...
  9. This is a known problem on Trident videocard's....

    This is a known problem on Trident videocard's. It's all in the 12 pin of the VGA connector. The newer monitors use this pin as I2C bidirection bus for VESA identification, but older monitor use this...
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    Still looking for....

    Still looking for....
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    Thanks. I did not think about it. EPM3032 is very...

    Thanks. I did not think about it. EPM3032 is very very old CPLD, which has 32 macrocells only. For example, low-end Cyclone IV FPGA has ~6000 macrocells. Thus, no way to organize any buffer or any...
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    XT-SD controller CPLD based (ISA-8)

    Hello all
    and happy new year!

    This is my "weekend project" - ISA XT-SD controller. I know about the existence of XT-IDE and IDE-SD adapters. Therefore, there is no problem to use SD card on XT....
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    Some people reported ultra light solution - just...

    Some people reported ultra light solution - just pull up TVGA9000 ALE pin to +5V....
  14. Replies
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    1,713

    Yes, i am sure. I want to modify and recompile...

    Yes, i am sure. I want to modify and recompile VGA video driver for Win 3.0. I tried to compile VGA driver from Win 3.1 DDK, but no success.
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    No news?

    No news?
  16. Replies
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    I see a noticeable difference between IBM XT and...

    I see a noticeable difference between IBM XT and IBM PC at your pics. I think internal Trident's logic monitoring ALE falling edge and latch address into internal latches. Then if MEMR/MEMW/IOR/IOW...
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    delete pls

    delete pls
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    This is new replica of the old Soviet computer...

    This is new replica of the old Soviet computer named Poisk-2. Full length AT mainboard based on KM1810VM86M (8086) CPU with some usable things, such us 2 Mb onboard RAM (640Kb base memory and ~1400Kb...
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    Yes, please tell the story, because my English...

    Yes, please tell the story, because my English very bad. The only thing I can say that the fix is not easy. You need an additional circuit and cut trace on Trident board.
    ...
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    Can you dump diskettes and share it, please?...

    Can you dump diskettes and share it, please? Paper books not needed....
  21. Replies
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    1,713

    No, description not actual. It's Win 3.0 SDK...

    No, description not actual. It's Win 3.0 SDK (Software Development Kit). Not Device Development Kit (DDK).
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    Looking for Windows 3.0 DDK

    Searching Windows 3.0 Driver Development Kit (DDK)....
  23. I don't sure, but you can try use 0c0h function...

    I don't sure, but you can try use 0c0h function of Int 15h. In ES:BX registers you get ROM table offset which contain model, submodel and bios revision. I don't know model/submodel constants for...
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    Try this link:...

    Try this link: http://old-dos.ru/files/file_122.html
  25. DOS player YM2149F/AY-3-8910 chiptunes for Creative Music System/Game Blaster

    Hello,

    Need some help from people who know how AY-3-8910 and SAA1099 PSG chips work and who have some expirience in Z80 assembler.

    I read this article: http://www.worldofsam.org/node/670 -...
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