DOS ain't dead

vsbhda - BOOST demo with SB Live (Users)

posted by RayeR , CZ, 20.11.2025, 06:05

I experimented with Timer register value on my SB Audigy1.
PWR on default value is 0
VSBHDA sets 1E0h, SBEMU sets 1Ah, WinXP kX driver leaves 0.
So I tried to set 1Ah after VSBHDA loaded but still got stuttering, maybe a bit smaller. I have to lower the value to 1-3 to get smooth playback for Boost demo and value 1 for another demo Dream by Peon (compiled with DJGPP, probably more CPU intensive, https://www.pouet.net/prod.php?which=1110 ). Value 0 gives stuttering like other high values. So there must be dependency on something else. I dumped the regs with your SBLIVE.EXE tool and there are many more differences between VSBHDA and SBEMU initialisation values (I pressed the reset button between making second dump).
Here they are:
http://rayer.g6.cz/1tmp/vsbhda.txt
http://rayer.g6.cz/1tmp/sbemu.txt

BTW the Dream demo runs both with original CWSDPMI (prefers VCPI) and patched (prefers DPMI), also requires setpvi in my case...

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DOS gives me freedom to unlimited HW access.

Complete thread:

• Jemm386 5.86 is great! - Laaca, 11.11.2025, 20:41 (Users)
  • Jemm386 5.86 is great! - Japheth, 12.11.2025, 07:19
    • Jemm386 5.86 is great! - RayeR, 12.11.2025, 15:28
      • Jemm386 5.86 is great! - Japheth, 12.11.2025, 18:34
        • VSBHDA is also great (was: Jemm386 5.86 is great!)! - SuperIlu, 12.11.2025, 22:48
        • Jemm386 5.86 is great! - RayeR, 13.11.2025, 16:22
          • Jemm386 5.86 is great! - rr, 14.11.2025, 06:46
          • Jemm386 5.86 is great! - Japheth, 14.11.2025, 08:35
            • Jemm386 5.86 is great! - RayeR, 15.11.2025, 04:15
              • Jemm386 5.86 is great! - Japheth, 15.11.2025, 09:02
                • Jemm386 5.86 is great! - RayeR, 18.11.2025, 06:03
                  • Jemm386 5.86 is great! - Japheth, 18.11.2025, 12:41
                    • Jemm386 5.86 is great! - RayeR, 18.11.2025, 23:23
                      • vsbhda - BOOST demo with SB Live - Japheth, 19.11.2025, 09:40
                        • vsbhda - BOOST demo with SB Live - RayeR, 20.11.2025, 06:05
                          • vsbhda - BOOST demo with SB Live - Japheth, 20.11.2025, 11:24
                            • vsbhda - BOOST demo with SB Live - RayeR, 22.11.2025, 04:39
                          • vsbhda - BOOST demo with SB Live - Japheth, 22.11.2025, 18:20
                  • Jemm386 5.86 is great! - rr, 18.11.2025, 19:08
                    • Jemm386 5.86 is great! - RayeR, 18.11.2025, 23:24
    • Jemm386 5.86 is great! - Laaca, 12.11.2025, 22:41
      • Jemm386 5.86 is great! - Japheth, 13.11.2025, 04:23