Replace the palette-swatch windows with ones that render DOSBox's live gauge
framebuffer -- the M_LIN16 16bpp video memory (vga.mem.linear, 640x480, 5:6:5,
start=vga.config.real_start) via glDrawPixels. Each window now shows the real
gauge image, matching the DOSBox screen ("similar output"), confirmed live.
Diagnostic: the VDB splitter-on log now prints the framebuffer mode
(0x111 / M_LIN16 / 640x480) -- confirming direct color, so the palettes are
not index LUTs.
All three windows currently show the shared framebuffer identically; the
per-display palette decode (how the VDB carves the encoded 16bpp stream into
the six monitor outputs) is the next step.
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.