Checklist
What happened?
Intel Advanced/ATX (Thor) always disables COM2 and initializes LPT in port 3BC, even if I manually choose COM and LPT addresses in BIOS. Intel Advanced/EV (Endeavor) using similar chipset do not suffer from this problem.
BIOS setting using version 1.00.03.CN0T:

BIOS setting using version 1.00.06.CN0:

Device Manager in Windows 95:


Configuration file
[S3 Trio64V+ PCI On-Board (Phoenix)]
memory = 2
colorkey = 1
[PS/2 Keyboard]
keys = 2
[PS/2 Mouse]
buttons = 2
[Realtek RTL8029AS #1]
bios = 0
mac = ba:82:7f
[General]
force_43 = 1
host_cpu = AMD Ryzen 7 5800H with Radeon Graphics
uuid = da7a29aa-445c-5ed0-85a3-e7136b8c85d3
vid_renderer = qt_software
[Machine]
cpu_family = pentium_p54c
cpu_multi = 1.5
cpu_speed = 90000000
cpu_use_dynarec = 1
fpu_type = internal
machine = thor
mem_size = 131072
[Video]
gfxcard = internal
show_second_monitors = 0
[Input devices]
keyboard_type = keyboard_ps2
mouse_type = ps2
[Sound]
sndcard = internal
[Network]
net_01_card = ne2kpci
net_01_host_device = \Device\NPF_{47F9363D-0F78-40E7-988D-7C6F9157D940}
net_01_link = 0
net_01_net_type = pcap
net_01_promisc = 0
net_01_switch_group = 0
net_02_link = 0
net_03_link = 0
net_04_link = 0
[Ports (COM & LPT)]
lpt1_device = dot_matrix
[Floppy and CD-ROM drives]
cdrom_01_ide_channel = 1:0
cdrom_01_image_path = shaders/Microsoft Windows 95B (4.00.1111) (OSR2) [English]/windows95b.iso
cdrom_01_parameters = 1, atapi
cdrom_01_speed = 72
fdd_01_audio = Mitsumi
fdd_01_turbo = 1
fdd_01_type = 35_2hd_3mode
fdd_02_type = none
[Keybinds]
release_mouse = Ctrl+F12
send_ctrl_alt_del = Ctrl+Del
[Hard disks]
hdd_01_fn = sdisk/256-3.vhd
hdd_01_ide_channel = 0:0
hdd_01_parameters = 63, 16, 520, 0, ide
hdd_01_speed = ramdisk
hdd_01_vhd_blocksize = 4096
hdd_01_vhd_parent = F:/86BoxManager/ZZ/95ENG2/sdisk/256-2.vhd
[Intel Advanced/ATX (Thor)]
bios = thor
Operating system
Windows 11 25H2
86Box version
v6.0 build 8014
Build architecture
Windows - x64 (64-bit)
Build type
Additional context
nvr+cfg.zip
Checklist
What happened?
Intel Advanced/ATX (Thor) always disables COM2 and initializes LPT in port 3BC, even if I manually choose COM and LPT addresses in BIOS. Intel Advanced/EV (Endeavor) using similar chipset do not suffer from this problem.
BIOS setting using version 1.00.03.CN0T:

BIOS setting using version 1.00.06.CN0:

Device Manager in Windows 95:


Configuration file
Operating system
Windows 11 25H2
86Box version
v6.0 build 8014
Build architecture
Windows - x64 (64-bit)
Build type
Additional context
nvr+cfg.zip