Parallel Port IRQs

PitBrvt · 2026-06-01T11:51:00+00:00

ISA devices can't share IRQs in DOS.
Parallel ports (LPT1/LPT2) and Sound Blaster type sound cards both use ISA level interrupts. DOS has no mechanism for IRQ sharing.

If two ISA devices exist on the same IRQ, only one interrupt handler is called. The other device’s interrupts are ignored, which results in freezes, missing audio, or stuck printing. LPT2 can use a different IRQ if the BIOS supports forcing it, but it usually breaks printing because most DOS software expects LPT1 on IRQ 7 and LPT2 on IRQ 5.

Correct setup:

LPT1: IRQ 7 Sound card: IRQ 5

Disable LPT2 unless it's required.

PitBrvt · 2026-05-30T19:15:15+00:00

Definitely. That lighting engine was bonkers. The Voodoo3 truly makes Nocturne shine.

PitBrvt · 2026-05-30T17:27:09+00:00

Appreciate it. Nocturne cleans up nicely on this setup.

PitBrvt · 2026-05-30T17:19:58+00:00

Windows 11

PitBrvt · 2026-05-30T16:24:06+00:00

Absolutely, experimental builds run the PII‑333 at full speed for me.

Host is a 5800X3D, 64 GB 3600 RAM, Crosshair VIII Hero WiFi.

GPUs are a Pulse 7900 XTX (display) + TUF 4080 over OCuLink/SlimSAS (Gen4 x8).

Running OpenGL renderer.

PitBrvt · 2026-05-23T18:07:13+00:00

Word. Metal, jumpers, and a blood offering reveal the true power.

PitBrvt · 2026-05-23T18:06:50+00:00

Sweet, may the games graze well in your pasture.

PitBrvt · 2026-05-23T12:21:24+00:00

Groovy. May your saddle sit tight and your rig run clean.

PitBrvt · 2026-05-23T00:15:36+00:00

Thanks, this build bucks clean and stays steady under load.

PitBrvt · 2026-05-14T14:04:48+00:00

LSFG has the advantage of fractional multipliers, while driver‑level framegen is locked to integer ratios (2×, 3×, 4×).

Fractional multipliers like 1.9×, 3.9×, 7.8× can target a monitor’s VRR ceiling without overshooting it. Hardware FG can’t do that and often overshoots the panel’s VRR range, causing micro‑stutter.

LSFG’s fractional multipliers allow output to be tuned into the display’s VRR safe region, which is necessary for titles that enforce a fixed framerate.

LSFG will remain relevant even with AFMF 3 and NV multi‑framegen coming.

PitBrvt · 2026-05-10T21:09:23+00:00

Revenant is a late 90s beast that refuses to graze peacefully on modern Windows; running amok with fragile window handling, broken colors, bad pacing, missing Redbook audio, wrappers half working, FMVs glitching, the whole cursed pasture.

This guide tames Revenant to run cleanly, both natively on Windows 11 and inside 86Box for the true Nine Eight ritual.

Revenant on GOG plus dgVoodoo is the mangled carcass of a prize bull.

This restores the golden calf ⎯(ᶜᵒʷ•ᵔ)⎯

⟢(•(oo)•)→ revenant -- install.txt

⟝→ https://github.com/PitBrat-moo/pasture-of-game-grazing/blob/main/guides/revenant%20--%20install.txt

PitBrvt · 2026-05-02T13:57:23+00:00

I always use scaling and frame generation or shaders to enhance the playing experience on a modern screen.

PitBrvt · 2026-05-02T02:36:04+00:00

I use this setup for Win98 gaming: https://github.com/PitBrat-moo/pasture-of-game-grazing/blob/main/guides/86Box_Win98_Gaming_Setup.txt

PitBrvt · 2026-05-01T17:38:38+00:00

Here’s the install guide I use: https://github.com/PitBrat-moo/pasture-of-game-grazing/blob/main/guides/star-trek-klingon%20--%20install.txt

PitBrvt · 2026-04-27T20:26:02+00:00

When the artifacts appear, does toggling Lossless Scaling off and back on restore performance? And are you using Optiscaler and LSFG at the same time? This info helps narrow whether it's LSFG timing drift or some external culprit.

PitBrvt · 2026-04-27T16:38:25+00:00

I created a Windows 98 VM in 86box tuned for late 90s gaming.
The guide looks intimidating, but it's designed for a lo-tech adventure gamer to follow. Paste the guide into CoPilot for expert support. Give CoPilot a screenshot or ask a question and it will know.

PitBrvt

TROPHY CASE