Files

T

CydandClaude Fable 5 a8e463e784 Emulator: kernel BPF RX filter for the pcap NIC + NE2000 accept/drop diagnostics

Real-NE2000 semantics: accept only own-MAC unicast + broadcast (multicast
excluded -- the guest stack is unicast+ARP only), and drop npcap's loopback
of our own injected frames. Without it, a live-LAN host download floods the
emulated NIC at wire rate (65k+ frames/min) and wedges netnub before boot
("discarding..."). Filter failure is non-fatal: logs and runs unfiltered.
Also log the first 12 unicast accepts/drops with the live PAR registers.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-10 23:47:05 -05:00

serialport

RIO working: serial wire tap, conf tuning, four-patch writeup

2026-07-04 00:22:14 -05:00

emu8k_shim.h

Sound: dual-AWE32 EMU8000 emulation -- the pod has audio

2026-07-04 19:40:15 -05:00

emu8k.cpp

Pick geometry completeness + the audio crackle root cause

2026-07-08 15:16:40 -05:00

emu8k.h

Sound: dual-AWE32 EMU8000 emulation -- the pod has audio

2026-07-04 19:40:15 -05:00

ethernet_pcap.cpp

Emulator: kernel BPF RX filter for the pcap NIC + NE2000 accept/drop diagnostics

2026-07-10 23:47:05 -05:00

ne2000.cpp

Emulator: kernel BPF RX filter for the pcap NIC + NE2000 accept/drop diagnostics

2026-07-10 23:47:05 -05:00

README.md

Sound: dual-AWE32 EMU8000 emulation -- the pod has audio

2026-07-04 19:40:15 -05:00

vpxlog.cpp

RP VDB SOLVED: gauge bank granularity 4KB->64KB (L4GAUGE.INI) -- full displays

2026-07-09 16:57:12 -05:00

vweawe.cpp

AWE32: VWE_AWE_WAV crackle-hunt recording taps

2026-07-08 14:06:11 -05:00

README.md

VPX + AWE32 devices — DOSBox-X integration

Our original source for the emulated pod hardware. Kept here under version control because the DOSBox-X source tree itself (emulator/src/, ~490 MB) is git-ignored.

vpxlog.cpp — the Division VPX link adapter (INMOS C012 at I/O base 0x150), grown through Phase 3: iserver handshake responder, FIFO scene decode, GL Division renderer (gallery shading model), VDB video-head splitter windows.
vweawe.cpp — the dual-AWE32 sound device: two vendored EMU8000 cores at 0x620/0x640 (+0x400/+0x800 triplets), rear-card DSP/mixer stub at 0x240, autonomous render thread with direct winmm output. Needs the GM ROM (emulator/roms/awe32.raw) via VWE_AWE_ROM or SoundFont uploads are refused (banks declare irom=1MGM). See emulator/SOUND-NOTES.md.
emu8k.cpp / emu8k.h / emu8k_shim.h — EMU8000 wavetable core vendored from 86Box (GPL-2.0-or-later, same license as DOSBox-X), with a minimal shim; local changes are listed in the emu8k.cpp header.

Applying to a DOSBox-X source checkout

Tested against DOSBox-X v2026.06.02, MSYS2 mingw64.

Copy the devices in:

cp emulator/vpx-device/vpxlog.cpp   emulator/src/src/hardware/
cp emulator/vpx-device/emu8k.cpp    emulator/src/src/hardware/
cp emulator/vpx-device/emu8k.h      emulator/src/src/hardware/
cp emulator/vpx-device/emu8k_shim.h emulator/src/src/hardware/
cp emulator/vpx-device/vweawe.cpp   emulator/src/src/hardware/

Add them to the hardware build — in src/src/hardware/Makefile.am, append vpxlog.cpp emu8k.cpp vweawe.cpp to libhardware_a_SOURCES (we inserted them after glide.cpp; if you edit the generated Makefile/Makefile.in by hand instead of re-running automake, also mirror the $(OBJEXT) list, the .Po depfile list, and the depfile include markers — grep for how vpxlog appears and copy the pattern).
Call the inits — in src/src/gui/sdlmain.cpp, declare void VPXLOG_Init(); and void VWEAWE_Init(); next to the other *_Init() prototypes; call VPXLOG_Init(); right after GLIDE_Init(); and VWEAWE_Init(); right after SBLASTER_Init(); (it needs the mixer initialized).

Build:

cd emulator/src
./build-mingw-sdl2 --enable-debug=heavy

Output: src/src/dosbox-x.exe.

Running

set VPXLOG=C:\VWE\TeslaRel410\emulator\vpxlog.txt
emulator\src\src\dosbox-x.exe -conf emulator\capture.conf
python emulator\analyze_capture.py

With VPXLOG unset the device is inert and the build behaves like stock DOSBox-X.