Checklist

• I have searched the issue tracker and was unable to find an open or closed issue matching what I'm seeing.
• I have verified that the issue is happening in the latest nightly build, or the latest commit, if building from source.

What happened?

Machines with C&T PC/AT chipset can only recognize 512K memory when memory were set with 1024K. Even if I set memory size manually in BIOS settings, machines still display memory mismatch.

Configuration file

[General]
emu_build_num = 8032
force_43 = 1
host_cpu = AMD Ryzen 7 5800H with Radeon Graphics         
uuid = 18bac0a1-cb95-59e6-beee-03e90a8c1027
vid_renderer = qt_software

[Machine]
cpu_family = 286
cpu_multi = 1
cpu_speed = 10000000
cpu_use_dynarec = 0
machine = super286c
mem_size = 1024

[Video]
gfxcard = vga
show_second_monitors = 0

[Input devices]
keyboard_type = keyboard_at
mouse_type = none

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

[Floppy and CD-ROM drives]
fdd_01_turbo = 1
fdd_01_type = 525_2hd
fdd_02_turbo = 1
fdd_02_type = 35_2hd

Operating system

Windows 11 25H2

86Box version

v6.0 build 8032

Build architecture

Windows - x64 (64-bit)

Build type

• New recompiler
• Debug build

Additional context

nvr+cfg.zip