Re: Looking for IBM Music Feature Card owners

Posted on 2024-04-13, 03:41

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

I can't get Compose and Playrec to run on my 486 DX33. If i remember correctly i encountered a similar problem - the Playrec and Compose did not start on my 386 machine. As a result, it started only on a clone of the XT motherboard with a processor frequency of 4.7 MHz. I think this is a problem …

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Re: Creating 80186 Based System

Posted on 2023-11-28, 11:47

by

by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It might be interesting to make an new 8086 motherboard with true zero wait states 16-bit memory and 16-bit ISA slots. I found something similar here https://github.com/rodneyknaap/atx-turboxt-v3 but it turned out that the system, despite the 8086 processor, is 8-bit, and the ISA slots also use only …

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Re: CGA Redux card - I need help !!

Posted on 2023-08-28, 19:10

by

by Tronix

in Marvin \ Video

in Marvin \ Video

@Tronix : I looked carefully at the photo of your CGA Redux. You used almost the entire set of ex-USSR TTL logic - K555 (74LS), K1533 (74ALS), K531 (74S). And even somewhere they found such a rarity as K1554TB9 (74AC112). Although, it seems, is it CMOS? And although most of the microcircuits you …

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Re: CGA Redux card - I need help !!

Posted on 2023-08-28, 05:56

by

by Tronix

in Marvin \ Video

in Marvin \ Video

CGA and also CGA Redux circuit is sensitive to the series of IC used. The readme from github says: U4,U5 and U101 should all be 'S174s U9,U10 are 74153 chips. U28 actually an 74S10 It also says that the author tried to use the 74LS series instead of them and everything worked for him, but this does …

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Re: Looking for IBM Music Feature Card owners

Posted on 2023-08-19, 19:14

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by Tronix

in Marvin \ Sound

in Marvin \ Sound

I am the second lucky owner of the board from scg , thanks to him for the work done on creating a replica. I assembled my board from the parts I have available, so it does not look very similar to the Yamaha original :) However, it works great just like scg's board. P1140149.jpg P1140151.jpg …

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Re: Possibility to write OPL3 sound driver for protected mode games

Posted on 2023-02-16, 09:58

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

Interesting project, thanks for it. This gives hope to add protected mode support to SoftMPU , but the damn differences in GNU-syntax here and the intel-syntax in SoftMPU will cause a lot of code redoing... This project is not built in Watcom compiler because HDPMIPT.C has a lot of inline code in …

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Re: WolfensteinCGA

Posted on 2023-01-22, 06:20

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by Tronix

in Release Announcements

in Release Announcements

Excelent! It would be cool to add support for MPU-401 from this project: wolfmidi+wolfdosmpu - Wolf3D/SoD music in General MIDI (fully-automatic converter) + WOLF3D.EXE with MPU-401 support

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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 2022-11-18, 19:04

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by Tronix

in Release Announcements

in Release Announcements

SF2 support would be amazing though There is nothing difficult in SF2 support, it is enough just to replace the SBK pawe32.lib library from the Creative development kit with another one with SF2 support. I even tried this and it works without breaking existing code or breaking sounds. But there is …

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Re: SB2AWE EEPROM flasher utility.

Posted on 2022-10-28, 12:20

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by Tronix

in Marvin \ Sound

in Marvin \ Sound

I disassembled the C4502_C1.EXE file and did a quick and dirty hack to make possible flash any dumps into EEPROM. So, AWEFLASH Utility v0.1 here. Usage: AWEFLASH where any binary EEPROM dump sized 512 bytes and placed in same folder with AWEFLASH. Attention! Warning! Achtung! …

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Re: Creative PnP EEPROM collection

Posted on 2022-10-28, 07:31

by

by Tronix

in Marvin \ Sound

in Marvin \ Sound

Out of curiosity, I disassembled the C4502_C1 file and did a quick and dirty hack to read dumps from AWE eeprom. So the AWEDUMP v0.1 utility is here. Runs without parameters and tries to read the EEPROM contents. Creates an AWEDUMP.BIN file on disk in current directory if successful. Attention! …

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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 2022-10-17, 16:53

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by Tronix

in Release Announcements

in Release Announcements

Uhhh really interesting!! With two SAA1099 chips available maybe it's possible to use one for sound effects (mono) and the other for music although with only 6 channels available. The mono CMS PCM is already available since I programmed it first, and then added stereo support. Hmmm, i have the same …

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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 2022-10-17, 11:32

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by Tronix

in Release Announcements

in Release Announcements

Today i tried adding CMS / Game Blaster music support to fastdoom: https://youtu.be/3HsqiehKW3s Unfortunately, music cannot work with PWM sound effects at the same time, so you have to choose only one - either CMS music or sfx So, not great not terrible =\

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Re: FLAC2WAV and WAV2FLAC; MP3 decoder [XT][8088][286]

Posted on 2022-10-13, 12:57

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by Tronix

in Release Announcements

in Release Announcements

And now MP3 to WAV simple decoder for [XT][8088]. I used Helix mp3 decoder from RealNetworks. I made changes to the assembly.h file (rewrite MULSHIFT32(), MADD64(), SAR64() in 8088 assembler). Source code: https://github.com/Tronix286/HELIXMP3 So, actual version here: https://github.com/Tronix286/ …

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FLAC2WAV and WAV2FLAC; MP3 decoder [XT][8088][286]

Posted on 2022-10-09, 11:24

by

by Tronix

in Release Announcements

in Release Announcements

I recently partially ported libFLAC to 16-bit open watcom compiler. Don't ask me why -) So, there: FLAC2WAV Minimal system spec: 8088 XT 512Kb RAM. Two versions in archive - for XT and 286/NEC_V20 computers. The presence or absence of a 80x87 coprocessor does not affect the …

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Re: Arachne web browser port for 80286/80287?

Posted on 2022-09-25, 14:07

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by Tronix

in Milliways

in Milliways

Okay, found WATTCP library source code here: http://www.jkmicro.com/Downloads-TCP-IP.html I also recompiled them for the 286 processor and rebuilt the program again. Since I cannot check whether the TCP/IP stack will work at all after this, I will leave both versions (message earlier and this).

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Re: Arachne web browser port for 80286/80287?

Posted on 2022-09-25, 13:32

by

by Tronix

in Milliways

in Milliways

I looked at the source code v1.99 and didn't see heavy use of floating point math. The only place where it is used is the arc drawing procedure in the LOPIF library. The project also uses the WATTCP library, but I did not find its source codes, only pre-compiled .LIB file included. In any case, I …

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Re: 80286 BIOS image collection

Posted on 2022-09-11, 10:41

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by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

#: 86 Manufacturer/Identifier: UNIDENTIFIED / ZERO WAIT HAM/12-TI Chipset: TACT82301BPB, TACT82302BPB, TACT82303EPB BIOS/Version: AMI BIOS ID: D286-1112-040990-K8 20220911_131022.jpg Jumpers settings: https://theretroweb.com/motherboards/s/aquarius-systems-zero-wait-ham-12-ti https://stason.org/ …

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Re: 80286 BIOS image collection

Posted on 2022-09-11, 10:30

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by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

#: 85 Manufacturer/Identifier: M-216A ver1.1 Chipset: PC Chips CHIP 2 TC14L100F2052 BIOS/Version: AMI BIOS ID: 30-0100-ZZ1437-00101111-070791-PC CHIPS 20220911_130949.jpg Jumpers settings: https://theretroweb.com/motherboards/s/pcchips-m216a https://stason.org/TULARC/pc/motherboards/I/ILON-USA-INC- …

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Re: 80286 BIOS image collection

Posted on 2022-09-09, 09:43

by

by Tronix

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

#: 84 Manufacturer/Identifier: PEAKTRON COMPUTER, INC. PA386SX-SMT-16/20/25 PA286-SMT-12/16/20/25 Chipset: SA1 PE168AK, SIS 85C206 BIOS/Version: AMI BIOS ID: D286-6182-101590-K8 20220910_175701.jpg photo_2022-09-09_12-06-42.jpg Jumpers settings: https://theretroweb.com/motherboards/s/peaktron-pa-286 …

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Re: Area 5150: New IBM PC+CGA demo

Posted on 2022-08-22, 17:38

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by Tronix

in Release Announcements

in Release Announcements

So how does 'CGA Redux' deal with this demo? if the question is for me, then i can't say exactly. I don't have a real 5150, I just have different kinds of XT-clones motherboards. I also do not have a real CGA monitor,so to display the image from CGA i use the MCE2VGA converter. I tried to run the …

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