Dear All,

Im am pretty new as a member of this list, although a longtime dosemu
user (~10 years).

I have one pure msdos console/graphics program (a controller program for
a serial instrument) which I use under xdosemu.

The program does well at drawing the console but, at a certain point
(fully reproducible) starts to unwanted text (btw, the startup message)
where it should redraw the screen. Normal use of the program becomes
clearly impossible. Simultaneously, dosemu spits a bunch of messages on
the console such as:

ERROR: bad dos helper function: AX=0x083a
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x085b
ERROR: bad dos helper function: AX=0x04cb
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x4383
ERROR: bad dos helper function: AX=0x085b
ERROR: bad dos helper function: AX=0x04cb

(and others)

If I go back to other sections of the prgm, the xdosemu console is
redrawn correctly and hence cleaned of the dirtying messages.

Is there any explanation and/or fix? Many thanks in advance from

Marco Bravi

======= Notes:

I am running dosemu from Debian Sarge and Debian testing. Same
behaviour. Dosemu runs freedos, but when running MS-DOS 6.22 exactly the
same behaviour and errors are observed at the very same spots of the
prgm execution.

My dosemu.conf file is attached (pretty clean, almost standard).