CodeView 3.14 fails to run

[Teppic1]

What happened?

CodeView 3.14 as supplied with Microsoft Fortran 5.1 and Microsoft C Professional Development System 6.00ax gives the following error when it's run:

CV1319 Error: Internal error - unrecoverable fault

I've tried it on several different machines with different CPUs and BIOSes and it's failed every time.

On VirtualBox 7 running DOS 6.22 it runs without an issue.

This also fails on old versions - I tried 86Box 3.0 and it gives the same error.

I did a search on this error and it appears to be related to using extended memory in DOS. A bug is listed for 3.0 that affected some old BIOSes but it says it was corrected in 3.10.

Configuration file

[General]
vid_renderer = qt_software
force_43 = 1

[Machine]
machine = r418
cpu_family = am486dx2_slenh
cpu_speed = 66666666
cpu_multi = 2
cpu_use_dynarec = 0
fpu_softfloat = 1
time_sync = local
fpu_type = internal
mem_size = 16384

[Video]
gfxcard = tvga8900d

[Input devices]
mouse_type = msserial

[Sound]
fm_driver = nuked
sndcard = sbawe32

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

[Storage controllers]
hdc = internal
cassette_mode = load

[Ports (COM & LPT)]
lpt1_device = postscript

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

[Hard disks]
hdd_01_parameters = 17, 15, 900, 0, ide
hdd_01_ide_channel = 0:0
hdd_01_fn = images/msdos6.vhd
hdd_01_vhd_blocksize = 1024
hdd_01_speed = ramdisk

Operating system

Windows 10

CPU

i7 7500

86Box version

5601

Build architecture

Windows - x64 (64-bit)

Build type

• New recompiler
• Debug build

Download source

Official website (Jenkins, GitHub)

Additional context

Disk image with DOS 6.22 and CV.EXE
msdos6.zip

[OBattler]

Closing because it's being tracked in #4447 .

[OBattler]

This is now fixed - apparently, x86 can execute data segments in some cases, and MS DPMI loves doing that. LINK suffered from similar problems a well.