ATI Mach64VT2 flickering between palettes on Windows 3.1x #4833
Description
What happened?
When running Windows for Workgroups 3.11 with the ATI Mach64VT2 in a 256-color mode the display quickly cycles between two incorrect palettes:
The expected behavior is a stable display with a correct palette.
Configuration file
[General]
vid_renderer = qt_software
host_cpu = Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
emu_build_num = 6153
uuid = a302f197-b80c-5e1b-9621-4bf01fffa4db
[Machine]
machine = p54tp4xe
cpu_family = pentium_p54c
cpu_speed = 100000000
cpu_multi = 1.5
cpu_use_dynarec = 1
fpu_softfloat = 0
time_sync = disabled
fpu_type = internal
mem_size = 16384
[Video]
gfxcard = mach64vt2
[Input devices]
mouse_type = ps2
[Sound]
fm_driver = nuked
[Network]
net_01_link = 0
net_02_link = 0
net_03_link = 0
net_04_link = 0
[Storage controllers]
hdc = internal
cassette_mode = load
[Hard disks]
hdd_01_parameters = 63, 16, 2031, 0, ide
hdd_01_fn = VideoTestW31.img
hdd_01_speed = 1994_4500rpm
hdd_01_ide_channel = 0:0
[Floppy and CD-ROM drives]
fdd_01_type = 35_2hd
fdd_02_type = none
cdrom_01_parameters = 1, atapi
cdrom_01_ide_channel = 1:0
fdd_01_image_history_01 = C:/Emulators/86Box/testing/CDROM_Drvs.img
cdrom_01_type = 86BOX_CD-ROM_1.00
[Other peripherals]
postcard_enabled = 1
[ATI Mach64VT2]
memory = 4Operating system
Windows 7 SP1
CPU
Intel Core i7-9700K
86Box version
v4.3 build 6153
Build architecture
Windows - x64 (64-bit)
Build type
- New recompiler
- Debug build
Download source
Official website (Jenkins, GitHub)
Additional context
I performed a bisect and found that this issue started occurring in build 5211.
Config/NVR/HDD image:
86Box-VideoTestW31-Mach64VT2.zip