Re: DxDiag - illegal operation

Posted on 2022-02-16, 13:54

by

by Tronix

in Marvin \ Software

in Marvin \ Software

Not at all! BTW, the same method worked with some other 3D applications on 80486, for ex Final Reality demo/benchmark - app crashes on library RLMFC.DLL, so if you replace 0x0f 0x31 bytes to 0x90 0x90 in RLCMFC.DLL Final Reality start okay, excluding CPU frequency info.

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Re: DxDiag - illegal operation

Posted on 2022-02-13, 13:47

by

by Tronix

in Marvin \ Software

in Marvin \ Software

Chadti99 wrote on 2022-02-13, 13:19: Any chance you could share your modified file? No, sorry, i'm not sure that I will not violate the Microsoft license agreement or forum rules. You can use any hex editor to replace all 0x0f 0x31 bytes to 0x90 0x90 bytes in DXDIAG.EXE file.

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Re: DxDiag - illegal operation

Posted on 2022-02-13, 12:56

by

by Tronix

in Marvin \ Software

in Marvin \ Software

I encountered similar DXDIAG behavior when i run it on 486 computer. In my case, CS:EIP points to this code: https://habrastorage.org/webt/f6/au/vw/f6auvwurrfjd1qrzbj6hlae1cfw.png From which it follows that everything stops at instruction RDTSC, which is not supported by the 486 processor. However, …

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Re: CGA text mode emu - Run your favorite CGA game in 80x50 text mode

Posted on 2022-01-07, 09:52

by

by Tronix

in Release Announcements

in Release Announcements

Using half width characters you can double the resolution vertically or horizontally (80x100, or 160x50), maybe it makes the screen look better. It will be a little bit slower, but for sure will look better! I am using half-width and half-tall characters together (ascii 220 and 221). The same …

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CGA text mode emu - Run your favorite CGA game in 80x50 text mode

Posted on 2022-01-07, 09:13

by

by Tronix

in Release Announcements

in Release Announcements

We have recently made a new ISA8 video card based on the old element base (triple intel 8275 CRT controllers), which can work only in text modes. If anyone is interested, here are photos https://i.ibb.co/9m0ycGZ/P1140039.jpg https://i.ibb.co/KWsP0SQ/P1140040.jpg Since this video card works only in …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-01-01, 10:53

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by Tronix

in Release Announcements

in Release Announcements

Hi, Does mode 80x50 have no mistake here? textdestscreen += 4128; #if defined(MODE_T8050) || defined(MODE_T80100) // Change video page regs.h.ah = 0x05; regs.h.al = textpage; regs.h.bh = 0x00; regs.h.bl = 0x00; int386(0x10, ®s, ®s); textdestscreen += 4096; //4128 textpage++; if (textpage == 3) …

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Identify OLD terminal 8088 board (presumably Bull Questar 210)

Posted on 2021-11-23, 08:17

by

by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, i have old terminal board (just a board and nothing else): BULL S.A CARTE LA2.1 290 108-00A NEP-14T https://hsto.org/files/d60/460/9cf/d604609cf93b4777b9d3c858c7673a19.jpg I replace broken LED1 and LED2, traced the main power circuits and made a pinout of the blue connector J4: https:// …

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Re: New processors for old sockets.

Posted on 2021-11-13, 17:43

by

by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

BTW, [Jürgen] made his 65f02 CPU running at 100 MHz for direct replacement original MOS 6502 http://www.e-basteln.de/computing/65f02/65f02/

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Re: What retro activity did you get up to today?

Posted on 2021-03-26, 16:59

by

by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Soldered Triple-Head i8275 VGA ISA8 board by freddy. Filename P1130930.JPG File size 749.08 KiB Views 650 views Filename P1130932.JPG File size 1001.47 KiB Views 650 views Filename P1130936.JPG File size 1.09 MiB Views 650 views Filename P1130942.JPG File size 656.54 KiB Views 650 views

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Re: SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2021-03-14, 09:45

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

I completely forgot about the ImpulseTracker! This is an excellent music tracker, the source code of which is open, so I can easy make support for CMS/GameBlaster output now. I again took the driver for audio output on LPT Covox as a basis and changed it a little. As a result, we got the CMS.DRV …

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Re: SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2021-03-14, 05:54

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

Just curious, how large are the .wav files you played, and what are the rest of the specs of the computer you did this on? I wonder how slow of a PC could actually handle this. I am very lazy to write my own player for WAV files, so I took someone's ready-made code in Turbo Pascal and changed the …

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Re: SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2021-03-13, 19:29

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

SAA output should be logarithmic as is AY and the Ti PSG. I dont think so. If you take a look at my first post on this topic, the picture, you can see that the voltages decrease linearly depending on the volume: vol 0 -> vout 5,12V vol 2 -> vout 5,09V vol 4 -> vout 5,04V vol 6 -> vout 5,00V etc.. …

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Re: SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2021-03-13, 11:28

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

I found a STM/MOD player with an open driver architecture with source codes - http://www.dcee.net/Files/Music/Player/ (play382.arj) [Sound Wave Pro / FRIENDS software / Andrew Zabolotny] , so i modify a little COVOX.ASM and play few STM and MOD files over Creative Music System / Game Blaster... …

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Re: SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2021-03-13, 06:14

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

My code for output 8 bit unsigned PCM raw value look like this: cmsReset; {Fill all registers with zeros, reset chip and enable sound} cmsWrite($18,$82); cmsWrite($19,$82); mov al,2 ; select amplitude register channel 2 mov dx,SoundPort inc dx out dx,al mov al,byte ptr es:[bx] ; AL = 8 bit unsigned …

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SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2021-03-12, 19:54

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

Hello, I found outdated similar thread on pouet.net but unfortunately it is outdated. I was helped by the basic information on turning on the envelope generators and pumping samples as amplitude at channels 2 and 5. I did a little research with a multimeter: P113092.JPG X-axis is the amplitude of 05 …

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Re: Creative Music System (CMS) / Game Blaster MIDI drivers

Posted on 2021-03-11, 09:34

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by Tronix

in Release Announcements

in Release Announcements

Made some fixes and changes to SoftMPU which finally allowed to run games with acceptable sound quality. A small video recorded from the emulator demonstrating the launch of a couple of games: https://youtu.be/OsUSNzIlkYY

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Re: CGA Replica / Potential New-Design CGA Card

Posted on 2021-03-09, 07:55

by

by Tronix

in Marvin \ Video

in Marvin \ Video

The author (@TubeTimeUS) of the SoundBlaster clone (SnarkBarker) is also doing a project to create a replica of the CGA card of FPGA... It's support VGA analog output for modern VGA monitors and TTL 5V output for vintage CGA or Mono monitors

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Re: Creative Music System (CMS) / Game Blaster MIDI drivers

Posted on 2021-03-03, 19:09

by

by Tronix

in Release Announcements

in Release Announcements

Has this also been done yet for the Innovation SSI-2001 card? (It's a PC sound card with a Commodore SID chip that saw very little support in games back in the day, even less than CMS.) Probably yes, but I don't have SSI-2001.... So far I have made CMS/Game Blaster support in the DOSMid player . …

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Re: The dead Sound blaster 16 CT2230

Posted on 2021-03-01, 19:48

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by Tronix

in Marvin \ Sound

in Marvin \ Sound

possible candidates in my opinion: 1) 74LS245 - buffer between ISA data bus and SB data bus; 2) Crystal oscilator, crystal generator 3) main SB chip

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Re: Creative Music System (CMS) / Game Blaster MIDI drivers

Posted on 2021-02-27, 15:02

by

by Tronix

in Release Announcements

in Release Announcements

I added auto detect for CMS port (210h - 260h) to Miles drivers and SoftMPU/CMS. Also i fix another stupied typo in SPKR.INC. And I create repo for Miles drivers, so no need ZIP archives anymore. You can download last version from: https://github.com/Tronix286/AIL2 https://github.com/Tronix286/ …

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