[Resolved] DOS session does not work. Motherboard Asrock B85

[Igor]

After starting a full-screen DOS session, a screen with "C:\" appears as in the picture (see attachment).
After pressing any key, the screen closes and the popuplog.os2 is formed.

Code: [Select]

19.11.2020  22:58:30  SYS   0  PID 0038  TID 0001  Slot 00A7
C:\OS2\PMSHELL.EXE
16D7FFFF
EEF3FFFF
P1=FB92E113  P2=2F0CE14B  P3=FF62F000  P4=FEE2E10E
EAX=00006247  EBX=0000FFFF  ECX=0000E118  EDX=0000FEC2
ESI=000091C3  EDI=00001240
DS=0348  DSACC=1092  DSLIM=00010FFF
ES=FFFF  ESACC=0000  ESLIM=00000000
FS=0000  FSACC=0000  FSLIM=00000000
GS=0000  GSACC=0000  GSLIM=00000000
CS:EIP=EB00:00000313  CSACC=0000  CSLIM=00000000
SS:ESP=FFFF:00000A74  SSACC=0000  SSLIM=00000000
EBP=00000A6A  FLG=000A6212

What can be done?
Motherboard Asrock B85. Bios UEFI and compatible.

[Dave Yeo]

Are you running AOS? If so, you should open an issue. I don't remember anyone having that failure.
If not, buying AOS 5.1 might help as UEFI DOS support seems better then BIOS based systems.

[Martin Iturbide]

Hi Igor.

Are you with UEFI support enabled and with a latest ArcaOS on this machine. As far as I understood there were some changes/updated on the drivers to run VDM (Virtual DOS) on UEFI mode. Maybe the issue goes on that side.

If the issue is happening on ArcaOS 5.0.6 with UEFI mode, I think it will be good to open a ticket.

Regards

[Andreas Schnellbacher]

As far as I understood there were some changes/updated on the drivers to run VDM (Virtual DOS) on UEFI mode.

Not in a released version. It's an announced feature. As Dave wrote, it's planned for 5.1.

[Igor]

Are you with UEFI support enabled and with a latest ArcaOS on this machine. As far as I understood there were some changes/updated on the drivers to run VDM (Virtual DOS) on UEFI mode. Maybe the issue goes on that side.

If the issue is happening on ArcaOS 5.0.6 with UEFI mode, I think it will be good to open a ticket.

Okay, I'll update the system to ArcaOS in the future. Hope there will be Christmas discounts.
Or is it better to wait for version 5.1?

[Dave Yeo]

Okay, I'll update the system to ArcaOS in the future. Hope there will be Christmas discounts.
Or is it better to wait for version 5.1?

Version 5.1 might be 6 months away. (Always hard to predict)

[Alexander]

After starting a full-screen DOS session, a screen with "C:\" appears as in the picture (see attachment).
After pressing any key, the screen closes and the popuplog.os2 is formed.

What can be done?

Try to disable dos=umb

set
DOS=HIGH,NOUMB
in config.sys

and check in vdm settings of each dos session shotcut , incl win/os2 sessions

Ps dos+emm386 runs on this motherboard with
device=c:\dos\emm386.exe  /nomovexbda noems ram

[Igor]

Try to disable dos=umb

set
DOS=HIGH,NOUMB
in config.sys

and check in vdm settings of each dos session shotcut , incl win/os2 sessions

Ps dos+emm386 runs on this motherboard with
device=c:\dos\emm386.exe  /nomovexbda noems ram

Many big thanks!
Indeed, after disabling the UMB, everything worked!
Problem solved!

[Rick Smith]

Greetings,

I have followed all of these tips on a thinkpad t430s with 1080 screen.  I have it mostly working, however once in DOS session I can get BBS started but for some reason if I do a simple "dir" command it closes DOS completely

Any thoughts

Regards,

Rick

[Andy Willis]

I have followed all of these tips on a thinkpad t430s with 1080 screen.  I have it mostly working, however once in DOS session I can get BBS started but for some reason if I do a simple "dir" command it closes DOS completely
Any thoughts

Modify config.sys
DEVICE=D:\OS2\MDOS\VSVGA.SYS  /int10textgrfxsafe
And to autoexec.bat
mode co80
cls

See if that helps... works on my W530,