Search \ VOGONS

Login

Login

Username

Password

2FA token (optional)

Remember me

Hide my online status this session

Lost password
Send activation email

or Create a new account
Create a new account

Common searches

Active topics

Search results

Display options

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

Posted on 2023-01-08, 11:04

in Marvin \ Sound

in Marvin \ Sound

The plan sounds very promising, crazii. A SB emulation program can be useful in many ways. Could you elaborate a little what advantages over VSB it's going to have and what output device(s) it's going to support. I don't know VSB much, it seems emulating SB for PC speaker & Covox. Basically the …

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

Posted on 2023-01-08, 10:10

in Marvin \ Sound

in Marvin \ Sound

I've looked at the VSB - Virtual Sound Blaster code, it has DMA emulation. It uses port trap to handle the DMA controller (IO port 0x0~0xF). It Also did that for the interrupt controller to virtualize IRQ. It has to enter pm/v86 to do those, or use QEMM. Emmm, interesting. I've thought about …

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

Posted on 2023-01-08, 08:19

in Marvin \ Sound

in Marvin \ Sound

I've looked at the VSB - Virtual Sound Blaster code, it has DMA emulation. It uses port trap to handle the DMA controller (IO port 0x0~0xF). It Also did that for the interrupt controller to virtualize IRQ. It has to enter pm/v86 to do those, or use QEMM. Emmm, interesting. I've thought about …

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

Posted on 2023-01-07, 15:59

in Marvin \ Sound

in Marvin \ Sound

Maybe we can have a live chat or audio/video call to share some ideas on how to implement an API to simplify DMA emulation, for the emulation of more complex sound cards? I'm considering writing a SB emulation program, and found you post here: https://www.vogons.org/viewtopic.php?f=9&t=73817 I took …

Re: Yamaha YMF7x4 Guide

Posted on 2022-12-31, 01:00

in Marvin \ Sound

in Marvin \ Sound

After reading this thread I still couldn't find a definitive answer to this: - do 815E/EP motherboards (ICH/1/2) support DDMA if using a modified setupds with the correct PCI IDs. Or does the modified setupds only enable SB-Link / PC-PCI on the boards. I have an 815EP (Tualatin) board with YMF724, …

Re: Yamaha YMF7x4 Guide

Posted on 2022-12-30, 03:10

in Marvin \ Sound

in Marvin \ Sound

After reading this thread I still couldn't find a definitive answer to this: - do 815E/EP motherboards (ICH/1/2) support DDMA if using a modified setupds with the correct PCI IDs. Or does the modified setupds only enable SB-Link / PC-PCI on the boards. I have an 815EP (Tualatin) board with YMF724, …

Re: Bought these (retro) hardware today

Posted on 2022-12-29, 11:39

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought 2 sub-notenooks from a collector. Toshiba libretto 70 Pentium MMX 120MHz, 64M RAM, Yamaha OPL3 SAx DSC_0338.JPG Fujitsu FMV-biblo NCIII 13. DSC_0337.JPG It has a ESS sound card on the isa bus. I think I'm done, won't buy more notebooks, got about 10 of them. Ooh really nice, what's the …

Re: Bought these (retro) hardware today

Posted on 2022-12-28, 23:21

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought 2 sub-notenooks from a collector. Toshiba libretto 70 Pentium MMX 120MHz, 64M RAM, Yamaha OPL3 SAx Filename DSC_0338.JPG File size 1.07 MiB Views 1505 views Fujitsu FMV-biblo NCIII 13. Filename DSC_0337.JPG File size 1.02 MiB Views 1505 views It has a ESS sound card on the isa bus. I think …

Re: DOS driver for RetroWave OPL3

Posted on 2022-12-25, 10:07

in Marvin \ Sound

in Marvin \ Sound

I've checked my device and the VendorID (VID) is 0483 and ProductID (PID) is 5740. However, I'm still not convinced the problem is with the Vortex86 SOM. When I plug in my KVM it allows me to type a few characters and then displays the exact same message ("Internal stack overflow, System Halted"). …

Re: DOS driver for RetroWave OPL3

Posted on 2022-12-24, 02:59

in Marvin \ Sound

in Marvin \ Sound

I've talked to Sudomaker and the vendor id is as you said, but I didn't use it, the express and lite have different ids. I'll try fix the id and that will solve the device not found problem, the other error, internal stack overflow, I think it is a bug of the driver, but I didn't see it in …

Re: DOS driver for RetroWave OPL3

Posted on 2022-12-22, 02:27

in Marvin \ Sound

in Marvin \ Sound

Meanwhile I'm gonna ask Sudomaker to check the Lite's vendor id, I use vendor id to detect the device, don't know if the Lite & Express use the same vendor id.

Re: DOS driver for RetroWave OPL3

Posted on 2022-12-22, 02:04

in Marvin \ Sound

in Marvin \ Sound

Ugh ... Same problem. It reports "Retro wave device not found." and then a few seconds later "Internal stack overflow, System Halted" I'm also trying a separate power source: weeCee VCC -> N/C weeCee D- -> RW D- weeCee D+ -> RW D+ weeCee GND -> RW GND+weeCee GND PSU -> RW VCC PSU GND -> RW GND+ …

Re: DOS driver for RetroWave OPL3

Posted on 2022-12-22, 01:58

in Marvin \ Sound

in Marvin \ Sound

Ugh ... Same problem. It reports "Retro wave device not found." and then a few seconds later "Internal stack overflow, System Halted" I'm also trying a separate power source: weeCee VCC -> N/C weeCee D- -> RW D- weeCee D+ -> RW D+ weeCee GND -> RW GND+weeCee GND PSU -> RW VCC PSU GND -> RW GND+ …

Re: DOS driver for RetroWave OPL3

Posted on 2022-12-20, 14:52

in Marvin \ Sound

in Marvin \ Sound

Hmmm, it still doesn't work but I think the problem is between the Vortex86 (weeCee PC) and the RetroWave PotatoPi Lite. (ie. the RetroWave OPL3 is connected to the PotatoPi Lite) As I mentioned, when I plug the PotatoPi + OPL3 into the weeCee, the PC immediately reboots. I've tried using a USB Y- …

Re: DOS virtual filesystem

Posted on 2022-12-18, 03:09

in PC Emulation

in PC Emulation

UPDATE: I've done the USB disk driver that mounts the disk or its partition as a disk drive, it DOS drive(partition) only so FDISK cannot detect the disk with out BIOS support. Found interesting stuff here: https://stackoverflow.com/questions/45891044/any-way-to-list-the-bios-drive-numbers-in-real- …

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

Posted on 2022-12-18, 03:00

in Marvin \ Sound

in Marvin \ Sound

The newly added port trapping for HDPMI is limited that only a DPMI client can be registered. The real mode handler (EMM386 compatible interface) support need more work and I'm not gonna do it yet. You mean simplify DMA emulation for protected mode only games through DPMI? I'm not quite familiar …

Re: DOS virtual filesystem

Posted on 2022-12-14, 14:38

in PC Emulation

in PC Emulation

I've simply read the RDISK.ASM, it seems get DOS's "list of lists" (INT 21h AH=52h http://mirror.cs.msu.ru/oldlinux.org/Linux.old/docs/interrupts/int-html/rb-2983.htm ) which contains the NUL device driver header and its linkage (linked list), and add the new driver to the list. and other things. …

Re: DOS virtual filesystem

Posted on 2022-12-14, 11:35

in PC Emulation

in PC Emulation

Thanks javispedro1! The background of my need is actually like this: I've done a USB (OPL3 sound) TSR driver with a custom USB stack, and the problem is exactly as you said. it will make existing USB devices(disks, keyboards, mice etc) not working since my driver will take control of the controller …

Re: DOS virtual filesystem

Posted on 2022-12-14, 08:27

in PC Emulation

in PC Emulation

I used MS Client 3.0 and it's kinda working using Virtualboxs' NIC card (not through host-share but via normal network share). https://wiki.samba.org/index.php/Configuring_FreeDOS_to_Access_a_Samba_Share It's FreeDOS wiki but I tried use in on MS DOS 7.0 and it works for my NAS (linux server with …

Re: Newly made PCMCIA sound card

Posted on 2022-12-11, 07:59

in Marvin \ Sound

in Marvin \ Sound

Cool. It's a hell of a lot books you got there. Are some of them in Japanese?

Page 20 of 29

Go to top of page Go to top of page