What happened?
I created two machines using ATI Mach32, one is PS/2 80 type 3 with MCA version, and the other is PS/Valuepoint P60 with built-in version. Then I got them installed with Win9x. Recently I found their screens suffering overscan after entering Win9x with 1024x768 resolution, only seeing part of desktop on display. If I change the resolution to 640x480, the display gets broken. The issue doesn't happen in build 5701, while happening after build 5702.



Configuration file
[XGA (MCA)]
type = 1
[General]
vid_renderer = qt_software
host_cpu = Intel(R) Core(TM) i5-9400 CPU @ 2.90GHz
emu_build_num = 5714
uuid = dc174d1c-eda2-5151-9632-bce2c4a1bc0a
language = zh-CN
vid_resize = 2
window_fixed_res = 1024x768
[Machine]
machine = ibmps2_m80_type3
cpu_family = idx4
cpu_speed = 100000000
cpu_multi = 3
fpu_type = internal
cpu_use_dynarec = 0
fpu_softfloat = 0
time_sync = local
mem_size = 65536
[Video]
gfxcard = mach32_mca
[Input devices]
mouse_type = ps2
[Sound]
sndcard = sbpromcv
fm_driver = nuked
[Network]
net_01_card = wd8003ea
net_01_net_type = slirp
net_01_link = 0
net_02_link = 0
net_03_link = 0
net_04_link = 0
[Storage controllers]
scsicard_1 = aha1640
hdc = none
cassette_mode = load
[Floppy and CD-ROM drives]
cdrom_01_parameters = 1, scsi
cdrom_01_scsi_location = 0:01
fdd_01_type = 35_2hd
fdd_02_type = none
cdrom_01_speed = 16
fdd_01_image_history_01 = D:/vintage computer/office97/office97.img
fdd_01_image_history_02 = D:/vintage computer/ps2m80/rf6259308.img
cdrom_01_image_history_01 = G:/FopDown/sc_ie5.5_sp2_full.iso
fdd_01_turbo = 1
fdd_01_image_history_03 = C:/Users/13980/Downloads/Windows98_SE.img
cdrom_01_image_history_02 = D:/vintage computer/Microsoft Internet Explorer 4.01 (4.71.1712) [Simpl. Chinese]
cdrom_01_image_history_03 = D:/vintage computer/office97/office97.iso
cdrom_01_image_history_04 = C:/Users/13980/Downloads/Compressed/win95_cn_all(jb51.net).iso
cdrom_01_type = 86BOX_CD-ROM_1.00
[Western Digital WD8003E/A #1]
mac = 9c:72:f6
[ATI Mach32 (MCA)]
memory = 4096
[Hard disks]
hdd_01_parameters = 63, 16, 2500, 0, scsi
hdd_01_scsi_location = 0:00
hdd_01_fn = 114114.vhd
hdd_01_speed = ramdisk
hdd_01_vhd_blocksize = 4096
[Standard PS/2 Mouse]
buttons = 4
Operating system
Windows 11 pro x64 23H2
CPU
Intel Core i5-9400
86Box version
v4.2 build 5714
Build architecture
Windows - x86 (32-bit)
Build type
Download source
Official website (Jenkins, GitHub)
Additional context
No response
What happened?
I created two machines using ATI Mach32, one is PS/2 80 type 3 with MCA version, and the other is PS/Valuepoint P60 with built-in version. Then I got them installed with Win9x. Recently I found their screens suffering overscan after entering Win9x with 1024x768 resolution, only seeing part of desktop on display. If I change the resolution to 640x480, the display gets broken. The issue doesn't happen in build 5701, while happening after build 5702.
Configuration file
Operating system
Windows 11 pro x64 23H2
CPU
Intel Core i5-9400
86Box version
v4.2 build 5714
Build architecture
Windows - x86 (32-bit)
Build type
Download source
Official website (Jenkins, GitHub)
Additional context
No response