Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-05-28, 13:39

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by LSS10999

in Release Announcements

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On the other hand, the adapter apparently expects very strict electrical connectivity. Casually made cables won't cut it, as they'll likely come loose and break the functionality after a prolonged while. Although I did manage to make a working IDC cable, it only lasted for about a week and now it …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-05-22, 16:44

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by LSS10999

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Did you have the chance to test out my idea? Sorry for the ping, just that I want to buy a new PC and the outcome of this VM experiment heavily influence my parts of choice. My debug cards sadly didnt arrive yet, possibly good old customs... Just attempted experimenting it with VirtualBox but it …

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Re: Disappointing DFI ITOX G4V620-B experience

Posted on 2024-05-22, 03:20

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by LSS10999

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Wouldn't this also require modifying the BIOS? I suspect that this kind of thing would be very integrated there. It depends. If G4V620 (845GV) and G4E620 (845G) are identical in terms of BIOS and PCB design then the BIOS should in theory be able to deduct whether it's using a 845G or 845GV and …

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Re: Disappointing DFI ITOX G4V620-B experience

Posted on 2024-05-21, 05:27

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by LSS10999

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's probably not even wired up properly for normal AGP operation, even if that was feasible. according to intel documentation for chipset 82845gv the signals for agp/ digital daughter board are mixed, and agp just disabled in this chipset. so probably replacing the chipset to normal 82845g may …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-05-17, 07:36

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by LSS10999

in Release Announcements

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A little update about some further tests. Looks like regular 2.54mm 2x10 dupont connectors are indeed a bad idea for something like dISAppointment. One need to use long enough header pins to ensure the connection is tight enough so it won't move around easily leading to sudden failures. 2.00mm …

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Re: AGP to PCI adapters - any PCB designers here willing to make one?

Posted on 2024-05-14, 11:50

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by LSS10999

in Marvin \ Video

in Marvin \ Video

"If you would like to make such an adapter, drop a PM, I can provide my PI7C9X130 schematics (PCIe to PCI adapter), and also reference ones with reverse bridge mode, as well as other tools." I'm afraid it is not in my strength. But there will a big performance drop, right? Wouldn't be better to …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-05-12, 14:05

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by LSS10999

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I have a Z87 chipset. What I did essentially is basically the same as some PCI/GPU passthrough, I just passed through the IOMMU group deecriptor of the group that had the LPC controller in it instead of my GPU. - theoretically every dma-capable device can be passed through by the IOMMU to a VM. …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-05-12, 05:04

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by LSS10999

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@LSS10999 If you have some spare time, please try passing through the LPC controller to a VM and test it. As previously discussed, there is maybe no chance of using this in a VM, but I would like to try. On my own computer, which is a wildy different platform mind you, if I passed through the IOMMU …

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Re: Problems regarding ANOVO AIMB-865

Posted on 2024-05-08, 00:59

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by LSS10999

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks and nice to see someone else also made progress on making theese boards usable. Maybe i will try to dig up one of mine that also have two unresponsive ram slots and flash your BIOS. I don't think the issue with RAM slots could be fixed from the BIOS side. The RAM slot problem was more likely …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-05-06, 03:11

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by LSS10999

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Some updates... I did some tests with dISAppointment on Windows XP and to my surprise it worked reasonably well, though can't be sure it's reliable enough. Setting Sound Blaster 16 as preferred audio device and tested playing some games. Everything looked good for quite a while (at least for an hour …

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Re: Trying some resolutions with old nVidia video cards on Win9x...

Posted on 2024-05-01, 09:14

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by LSS10999

in Marvin \ Video

in Marvin \ Video

Did you ever get to test the 45.23 driver? Because my hope was that those older drivers somehow enable dual link dvi, which is broken in all the 77.72 and later versions that I can test with my Quadro FX 3450 and 7900gs/gto under 98. Nope... I'm afraid the card was likely dead shortly after that …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-29, 01:18

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by LSS10999

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On your board irq 3 was probably shared by more devices so as you freed irq 5 it moved one device from irq 3 to 5 to avoid sharing. Maybe it would be possible to disable device taking irq 5 after boot by some control registers? On my motherboard, IRQ3 was taken by line E. USB3 controller which is …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-28, 14:05

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by LSS10999

in Release Announcements

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pcicmd 0 1f 0 60 pcicmd 0 1f 0 68 I get 0A04800B and 03058080 respectively, so it looks like IRQ7 is free. I've always needed to use IRQ 7 with the disappointment, but I tried 2,3,5 and none of them worked either. I've disabled quite literally every onboard device in the BIOS, but this board has a …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-28, 02:51

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by LSS10999

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I'm also curious how this is done. Very generally I think the magic is done by PnP enumarator code during POST. Every device should report a list of resources it can assign and what values are prefered and if it can be shared. Eg. device A says I can do IRQ 5, 6, 7, 8, 9 and 5 is prefered, device B …

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Re: Running NT 3.51 on modern hardware (Ryzen 3900x)

Posted on 2024-04-28, 01:01

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by LSS10999

in Milliways

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Well, NT 3.51 is still doing fine even on newer hardware like Intel 13th Gen CPU and an Asus H610 motherboard. (this board has MPS 1.4 support that works 100% OK with NT4 ) I can confirm that NT 3.51 runs completely fine, 100% stable, with standard kernel. This was a surprise, but runs with …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-28, 00:46

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by LSS10999

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I've found the answer. Actually port 21h is being used for IRQ stuffs and should not be touched. So I'm having the same problem as you (interrupts not firing), except using your latest code that doesn't touch 21h doesn't seem to help. DMA is working great though. Any ideas? Maybe I can set 21h to …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-27, 15:51

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by LSS10999

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I've put my X99M Killer/3.1 and dISAppointment 0.2 into the case that previously housed my RUBY-9719VG2AR, as the test setup is now considered good enough to replace it. For the past few days I've been working on preparing system drives for this system, installing and testing OSes I intend to run on …

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Re: Running NT 3.51 on modern hardware (Ryzen 3900x)

Posted on 2024-04-27, 09:41

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by LSS10999

in Milliways

in Milliways

Sorry for another bump... I just migrated an existing system with NT 3.51 to another board with a X99 chipset and now it can't start, complaining about INACCESSIBLE_BOOT_DEVICE. On the other hand, it seems most Intel chipsets including current ones are MPS-complaint to some extent as the MPS …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-20, 15:49

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by LSS10999

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I... Can't find a datasheet, but this one page blurb claims a pcie to isa bridge chip exists with full isa support except bus master. Assuming it's accurate, would that imply that lpc isn't needed to support sound cards? https://www.fintek.com.tw/index.php/products/i-o-controller-and-i-f-management …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-18, 02:13

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by LSS10999

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I captured the LDRQ# signal during SBDIAG sine/tada test on my P67 MB with ESS ISA sndcard. Under Doom it looks similar. During boot and when soundcard is not used it's still high... Btw in my case the sbdiag sine noDMA is silent, both on real ISA and with SBEMU, only DMA sine plays. How about you? …

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