What happened?

I installed the DOS device driver on the ATI Mach 8. I also installed the Adapter Interphase to be able to emulate the 8514/A 1024x768x256 video mode. But after the apps attempt to load that video mode the VM freezes.

Beforehand, I don't know if there are different AI drivers for the Mach 8 Ultra and non-Ultra, I think they should be the same because the normal, non accelerated VGA part of the card does support up to 800x600 with 256 colors only.

Here are the screenshots:

Here are the drivers loaded:
.

Here is the bug after loading a Majjong version for the 8514/A

This also happens with PC Paintbrush IV when configured for 8514/A 1t 1024x768x256.

Also there is a bug when testing the 8514/A with the setup disk

After this screen the VM frezzes with a red screen.

The Win 3.1 driver seems to works fine however

The regular VGA part of the card seems to work fine too, on Neopaint

Here is the HDD file:

386 DX ATI Mach 8 v5.zip

Here the NVR:
nvr-386-MAch 8.zip

Configuration file

[General]
vid_renderer = qt_software
vid_resize = 1
enable_overscan = 1

[Machine]
machine = asus386
cpu_family = i386dx
cpu_speed = 33333333
cpu_multi = 1
cpu_use_dynarec = 0
fpu_softfloat = 0
time_sync = local
cpu = 3
mem_size = 4096

[Video]
gfxcard = mach8_isa

[Input devices]
mouse_type = msserial

[Sound]
fm_driver = nuked

[Network]
net_01_link = 0
net_02_link = 0
net_03_link = 0
net_04_link = 0

[Ports (COM & LPT)]
lpt1_device = dot_matrix

[Storage controllers]
hdc = ide_isa
cassette_mode = load

[Hard disks]
hdd_01_parameters = 17, 10, 1024, 0, ide
hdd_01_fn = 
hdd_01_speed = 1994_4500rpm
hdd_01_vhd_blocksize = 1024
hdd_01_ide_channel = 0:0

[Floppy and CD-ROM drives]
fdd_01_type = 35_2hd
fdd_02_type = 525_2hd

Operating system

Windows 10 22H2

CPU

i5 4210U

86Box version

4.1.0.5300

Build architecture

Windows - x86 (32-bit)

Build type

• New recompiler
• Debug build

Download source

Official website (Jenkins, GitHub)

Additional context

No response