If someone wonder what is difference between Geforce 6600LE and Geforce 6600 GT its quite big:

I can say that some Windows 98 udpates improving games compatibility i had problem at least to start Evolva and Mafia 1 demo and with updates its now possible.

Because i dont aggressive updates like Unofficial services pack 3 and KernEx and official updates are now not available on MS side, i just install Autopatcher 2007 - but i didnt run it.. but only install all official updates, some good unofficial ones and some runtimes / codec packs.

I finally got Sintech ASM108x PCI-E to PCI adapter and Geforce 5500 PCI is working well with it.. so even too 2 ASM adapter on board and external can work together.

There are still lots of Geforce 5 PCI cards, available on ebay with reasonable prices ~25$, i had to download card from make it working, it wasnt possible with rom parser for Linux, but old version on Nvflash form Freedos USB flash (Rufus make it) was able to dump it.

Otherwise i did my duties and reported all KVM Win98 related bugs, i dont have big expectation from it, but:
https://bugs.launchpad.net/qemu/+bug/1873335
https://bugs.launchpad.net/qemu/+bug/1873337
https://bugs.launchpad.net/qemu/+bug/1873338
https://bugs.launchpad.net/qemu/+bug/1873339
https://bugs.launchpad.net/qemu/+bug/1873340
https://bugs.launchpad.net/qemu/+bug/1873341
https://bugs.launchpad.net/qemu/+bug/1873344
https://bugs.launchpad.net/qemu/+bug/1873542

I think that I may have an idea about why the sound cards doesn't work properly under DOS. It should be because SeaBIOS does NOT support ISA PnP. While the cards are PCI, they are supposed to provide a backwards compatible interface for DOS which should be ISA compatible, and that is what is missing. Windows 98 should be able initialize them OS side, but DOS does not unless you manually do so with a specialized tool.

Look around for things like these:
https://www.vogons.org/viewtopic.php?t=72553
http://www.vcfed.org/forum/showthread.ph...Enabler-for-DOS




*EDIT*

After googling around some more, what SeaBIOS does not support is PnP BIOS specifications. I'm unsure whenever that affects PCI Devices, as I thought that it covered ISA PnP only. Not sure how to initialize them.

From my point of view, i doubt that Unisound would be solution, its month and half old utlity, which if im not wrong just fixing that for different ISA soundcards you need different drivers, what is annoying, because you have to use config files branches.. or edit config files.. so unisound is solving it.
Directly in description is also that it is ISA soundcards only and its not working for PCI ones.

PnP - i really dunno if such thing is needed, i never studied PnP specs in details.. In my view PnP is just for cards autodetection within OS, which support some hardware changes checks.. usually after boot like Win95.. is card is not supporting PnP you just have to add it manually or use some Wizard like Add New Hardware in Win9x, which is probably asking some addresses for right values, if some devices is there or not.. its same way how Dos HW diagnostics utilities are working.

Old MBs had even option you modern OS with PNP, or set IRQs etc.. manually. And when i used manual selection.. good for force IRQ 5/7 for Sound Blaster.. what is essential.. everything worked fine, include sound.

My guess is just that Dos PCI sound card drivers simply check all slots if card is there and if yes load its drivers.. no PnP magic used.

Problem would be probably with DMA, that is way PCI soucards are not working on real newer boards. Where are lots of methods how make DMA working - details are here:
https://docs.google.com/spreadsheets/d/1...K4l0/edit#gid=0
https://www.vogons.org/viewtopic.php?f=62&t=24769

And Qemu MB function is probably not good enough to provide / implement some interface to make DMA calls working.

PnP is NOT only for autodetection, it also involves resource configuration. An unconfigured ISA PnP card shouldn't have IRQ and DMA Channel assigned to it (I think that it is still mapped to an address so MMIO and PMIO should still work). PCI uses a completely different PnP system for resource configuration than that of ISA PnP, but your symptoms are way too similar to those of an uninitialized card, which explains why in DOS your Sound Card is half working, half not. And since SeaBIOS is supposed to not have PnP BIOS support, it makes sense than it may be involved, as PnP BIOS was mainly for ISA PnP but tangentially covered PCI configuration, too.

By default, ISA PnP and PCI Cards have to be configured and assigned resources before they works as intended. A PnP BIOS is supposed to configure the cards to hand them over to an OS that isn't PnP aware, like DOS is. This is why ISA PnP and PCI Cards for the most part works in DOS (Except the famous ISA DMA). In Windows 98 it works even if lacking PnP BIOS simply because being PnP aware, Windows 98 can configure and initialize the cards by itself. DOS can't do that automatically, you need to do it manually. That is why there are tools like Unisound, which can initialize ISA PnP Cards in systems that have no PnP BIOS support, so that you can use a more modern Sound Blaster PnP variant in, say, an original IBM PC 5150.
Yes, Unisound works only for ISA PnP cards, so it is not going to help you. What you need to find is if there is any tool similar to that, but that can initialize PCI Cards in DOS instead of ISA PnP. Since PCI has a rather standarized PnP system thanks to the PCI CS (Configuration Space), I think that there should be universal tools to check it.

Check here if you want to know how the PCI CS works: https://wiki.osdev.org/PCI

I THINK that there is an utility known as PCIFind.exe that can display data from the PCI CS in both DOS and Windows, so you could use it in both to see if there are differences. However, I don't known a good source to download it and never used it, nor saw it mentioned in Vogons or VCFed.



I have absolutely no idea whenever QEMU supports PC/PCI and DDMA (Distributed DMA). It would be wonderful if these could be handled via Chipset emulation, but I don't know if there is a physical Hardware requeriment at the PCI Bridge level for them.

Zitat

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PnP is NOT only for autodetection, it also involves resource configuration.

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I know, its opposite to manual assignment, which i covered in last post.. so i didnt mention it directly, but it implies from it.

That sound card initialization stuff. This too much variables problem i dont really understand it on low level and that is needed, so i would let it to someone else, for testing you just need only 1 PCI slot or PCI-E to PCI adapter and Dos compatible PCI sound card. On real machine, its all handled by sound card driver, which communicate MB. I never heard any big success story for Dos PCI sound outside usage of vendors drivers.. there are some minor successes like Realtek HD is working without any driver with Q2DOS port, some Multimedia players also using some clever libraries which are able to make cards without drivers working..
And there are some minor successes with PCIset here:
https://www.vogons.org/viewtopic.php?f=62&t=61256
but is way from same compatibility with drivers, at least so far.

Otherwise its uncompleted, but Qemu has SB16 emulation within Dos so some sort of DMA has to be already implemented.


I found other annoying thing, Qemu seems to support for cd images only *.iso, format which is only good for data, but it doesnt support multiple tracks, audio cds etc.. so most games cd / dvd couldnt be mounted by this way. So only way is copy data on Win98 discs and use some cd mounting tool here.

Zitat von ruthan im Beitrag #203

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And there are some minor successes with PCIset here:
https://www.vogons.org/viewtopic.php?f=62&t=61256

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Zitat

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That is precisely what you should try next to see if you can get Sound Cards working in DOS. However, I can't help you with that one, is also beyond my knowledge.

You need to figure out if someone at Vogons that already has experience manually initializing PCI Devices in DOS can give you a hand. If anything, you may want to see if you can get the PCI Configuration Space data in both Windows and DOS and compare them to see if there are any differences. That would be the first thing that I would test.

For reference, there are a great deal of custom stuff that was done with QEMU, but requires a developer guru to pull out:
https://www.mail-archive.com/vfio-users@...m/msg03702.html

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These PCI edits - here i want to be just user, if someone will make it working for Qemu and report how to do it, if will use it to. Otherwise its just thing for some Dos Midi musicians. I will wait for proper Qemu solution.. because PCem has it already working, Dosbox is also possiblity..some Vmware guy is working on for free.. so there are better options.. of course that Qemu DOS / Windows combo solution for everything would be better.

Zitat

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Except already reported bugs.. BTW its not only Radeon X600, but all old ATI cards problem, i tried 6 of them or so.. so it has to be Qemu bug.

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I have only Linux related problems:
1) Im not able run Qemu script as normal user, because i cant run TAP networking with user rights, i wrote in older posts.
2) Qemu USB passthrough is not working with my custom Qemu 4.2 build, because it need to mess with some ./configure parameters, because its disabled by default, im using etdev when for new OSes, so i can live without it.. i would need it maybe for USB sound cards testing.
3) Rebooting because of not working audio devices - i posted and dmesg logs above.

Some new releases:

PCem16: https://pcem-emulator.co.uk/index.html
There is nothing major, but your newer know is behind lots of undescribed bug fixes, i would be really nice, if would be possible to use same disk images as Qemu. Qemu KVM is now better to Win98x and new games, but PCem is much better for Dos and good for 1995-97 Windows 9x systems.. P150 + Voodoo 1/2 or something like that.

Qemu 5.0 released, but again when i look at changelog nothing major:
https://wiki.qemu.org/ChangeLog/5.0

You may also be interesed in this patch that was just recently released. The author has been trying to upstream it so I assume than in 6 more months it would be available in QEMU 5.1.

https://forum.level1techs.com/t/qemu-nat...-support/156494

That is supposed to solve the audio backend side issues, but you still have to perfect the emulation of the Sound Card Devices guest side.

Thanks, for info. So far with new audo sh files parameters, even present AC97 emulation seems to be quite good.

I have found other way how to dump card ROms, its working at least for Nvidia, but i thing that it would be working with ATIs too, its Dos Way.
Navratil system info- https://www.navsoft.cz/ , has it in Tools menu. Im doing it with other machine, maybe it could work with pass-through and Dos machine too..

I had opportunity just quickly test if PCI-E gen 1 videocard will working with modern Gigabyte Z390 board, because previously i tested other cards with Gigabyte Z370 without luck.. and its working at least for boot, i havent time to i pass through / not main slots etc etc, i just tested my proven Asus Geforce 6600LE in first slot, if it will give me picture for bios screen.

I will migrate one of my machine to this board, so after i will fix and migration problems (i have lots of OSes, especially MacOS is Pita), or at least majority of them for main OS, i will do more testing.