DOS ain't dead

QEMU and DOS (Ultra)-DMA drivers (Emulation)

posted by RayeR , CZ, 16.08.2022, 19:01

> I don't think that qemu is a good tool for DOS emulation. The keyboard
> emulation is the worst of all emulators I know of, the Soundblaster support
> is partially broken since several years, now the UDMA emulation is faulty,

I was also playing with QEMU for Windows and DOS some years ago and had the same feeling. There was some attempt to support HW virtualization via intel HAX driver but it was soo bugy, most of DOS pmode programs just crashed with "VCPU shutdown request" except Doom that ran 2-5 FPS (wow, 386SX speed on i7 @4,5GHz). If I remember I got some sound out but maybe only adlib... For VirtualBox (current version) AFAIK there's no SB16 emulation.
On the other hand QEMU has some interesting features like PCI passthrough but AFAIK it requires HW support - VT-d IO in CPU and maybe chipset support.

---
DOS gives me freedom to unlimited HW access.

Complete thread:

• QEMU and DOS (Ultra)-DMA drivers - Japheth, 11.08.2022, 16:05
  • QEMU and DOS (Ultra)-DMA drivers - rr, 11.08.2022, 21:03
    • QEMU and DOS (Ultra)-DMA drivers - marcov, 11.08.2022, 23:22
    • QEMU and DOS (Ultra)-DMA drivers - Japheth, 12.08.2022, 00:09
      • QEMU and DOS (Ultra)-DMA drivers - rr, 13.08.2022, 21:16
  • QEMU and DOS (Ultra)-DMA drivers - Japheth, 12.08.2022, 22:04
    • QEMU and DOS (Ultra)-DMA drivers - rr, 13.08.2022, 21:18
      • QEMU and DOS (Ultra)-DMA drivers - Japheth, 14.08.2022, 08:39
        • QEMU and DOS (Ultra)-DMA drivers - RayeR, 16.08.2022, 19:01
          • QEMU and DOS (Ultra)-DMA drivers - Japheth, 16.08.2022, 19:31
            • QEMU and DOS (Ultra)-DMA drivers - RayeR, 16.08.2022, 19:37
              • QEMU and DOS (Ultra)-DMA drivers - rr, 16.08.2022, 21:38
            • QEMU and DOS (Ultra)-DMA drivers - rr, 16.08.2022, 21:39
              • QEMU and DOS (Ultra)-DMA drivers - tom, 17.08.2022, 00:26
  • old XDMA revived - Japheth, 15.08.2022, 07:19