Draw the three VDB display palettes as 256-color bars along the bottom of the GL render window, updated every frame straight from the VDB storage -- a live view (like the Division output) instead of static snapshots. This matters because pal0 (secondary) animates and the earlier file dumps caught pal0/pal2 at their SVGAZeroPalette init (all black); live, pal2 is actually a rich 4-region color map (green/blue/red/gray-purple, 64 entries each) and pal1 the red/green/olive status palette. Toggle with VPX_VDBSTRIP=0. Also: VDB_PALDUMP now keeps the most-lit snapshot per group (max non-black bytes) so file dumps no longer capture the zero-init. VDBPalette storage moved above the render thread so rt_draw can read it. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
VPX device — DOSBox-X integration
Our original source for the emulated Division VPX link adapter. Kept here under
version control because the DOSBox-X source tree itself
(emulator/src/, ~490 MB) is git-ignored.
vpxlog.cpp— Phase 1 logging device. Impersonates the INMOS C012 link adapter at I/O base0x150, answers status reads so the game keeps transmitting, and logs every access to$VPXLOG. (Phase 2 will grow this into a responding transputer-monitor + i860-loader + frame-stream renderer, or fork into a separatevpx.cpp.)
Applying to a DOSBox-X source checkout
Tested against DOSBox-X v2026.06.02, MSYS2 mingw64.
- Copy the device in:
cp emulator/vpx-device/vpxlog.cpp emulator/src/src/hardware/vpxlog.cpp - Add it to the hardware build — in
src/src/hardware/Makefile.am, appendvpxlog.cpptolibhardware_a_SOURCES(we inserted it afterglide.cpp). - Call the init — in
src/src/gui/sdlmain.cpp, declarevoid VPXLOG_Init();next to the other*_Init()prototypes and callVPXLOG_Init();right afterGLIDE_Init();in the machine bring-up sequence. - Build:
Output:
cd emulator/src ./build-mingw-sdl2 --enable-debug=heavysrc/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.