I have no experience with Solo1 and I absolutely do everything in my power to avoid PCI sound cards in DOS (so far so good), but AFAIK TDMA for ESS chips is a mapper sort of thing where ISA DMA controller is mapped to a PCI controller so that everything (at least in theory) should work just like with ISA card.

The thing is, it is a hit and miss thing and as your MB lacks ISA slots, it may have problems with that. And also, a TDMA requires a driver (again, AFAIK, I'm not 100% sure).

If you want hassle free DOS sound, you go with ISA sound cards in general.

CharlieFoxtrot wrote on 2026-03-28, 16:14:

I have no experience with Solo1 and I absolutely do everything in my power to avoid PCI sound cards in DOS (so far so good), but AFAIK TDMA for ESS chips is a mapper sort of thing where ISA DMA controller is mapped to a PCI controller so that everything (at least in theory) should work just like with ISA card.

The thing is, it is a hit and miss thing and as your MB lacks ISA slots, it may have problems with that. And also, a TDMA requires a driver (again, AFAIK, I'm not 100% sure).

If you want hassle free DOS sound, you go with ISA sound cards in general.

Oh believe me i would love to be using an ISA card, unfortunately ISA slot boards are not only becoming hard to find but also damn expensive so working with what ive got at the moment. If i cant get it to work then ill just have to deal with it but id really like to avoid using dosbox.

Some people say they have to load the ESSSOLO.SYS TSR for IRQ 5 and 7 to work, unfortunately bridging PCI to legacy DMA can be a mess. If you have a decent amount of CPU power, using SBEMU/VSBHDA through the Audigy2 may be a better option.

You may be hitting the limit of compatibility with the ESS Solo-1 and the motherboard / chipset you are using.

My understanding is that for proper DMA support for that chipset would likely require a PC-PCI connector, which unfortunately that board doesn't appear to have.

In my own experience testing the ESS-Solo 1, I had similar results on a ASRock 775Dual-VSTA motherboard. Games like original Doom (v1.2) and Sam & Max Hit the Road worked fine. But Doom 2 (v1.9) only worked for FM synth or General MIDI, same as Duke Nukem 3D. And Quake's audio would stutter and glitch.

Shponglefan wrote on 2026-03-29, 01:24:

You may be hitting the limit of compatibility with the ESS Solo-1 and the motherboard / chipset you are using.

This is exactly what I was thinking. As the MB lacks ISA slots, it doesn’t need legacy ISA DMA controller at all. This may be the cause of the issues, ESS card just doesn’t work properly with that chipseet/mb.

Appreciate all the comments guys, i might need to look into different hardware if i want to use real Dos.

If you want a decent time with real DOS you probably don't want to go newer than a 440BX (Intel P3) or 750/KT133A (AMD K7), those are the last chipsets to have native ISA support. Anything newer you would have to buy hardware verified by other people that works properly with legacy DMA.

NeoG_ wrote on 2026-03-29, 10:13:

If you want a decent time with real DOS you probably don't want to go newer than a 440BX (Intel P3) or 750/KT133A (AMD K7), those are the last chipsets to have native ISA support. Anything newer you would have to buy hardware verified by other people that works properly with legacy DMA.

There are later model motherboards up to Pentium 4 era (Socket 478 and LGA775) with PCI-ISA bridge chips that can support DMA in DOS. They can generally work fine for ISA sound cards with DMA support in my experience.

However, such boards tend to be a bit pricey if shopping on Ebay.

Otherwise as you say, the best thing is to get a board with a chipset that relatively supports ISA, which will likely have ISA slots to begin with.