Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!deimos!phobos.cis.ksu.edu!bdn
From: bdn@phobos.cis.ksu.edu (Bryan D. Nehl)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: How to do a warm-boot from ASM
Keywords: boot, ASM, TASM, MASM
Message-ID: <25E0BD4E.35EB@deimos.cis.ksu.edu>
Date: 20 Feb 90 03:45:17 GMT
References: <2028@milton.acs.washington.edu> <P#$#92_@rpi.edu>
Sender: news@deimos.cis.ksu.edu (USENET News Admin)
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Organization: Dept. of Computing and Information Sciences, Kansas State U.
Lines: 22

In article <P#$#92_@rpi.edu> mcintyre@turing.cs.rpi.edu (David McIntyre) writes:

>jimmy writes:
>>Does anyone know how to do a boot from a C program?

>Yes, just do an Interrupt 25 (which is 19h).  That will do it nicely.

I am trying do the same thing from assembler but when I call
int 19h it acts like its going to reboot, seems like it's rebooting
and then just hangs.  I know the format of the rest of the program is
good because it's just a shell that I use to stick bios calls into.
For instance I use the same skeleton and set the video mode and cursor size.

Any ideas?  I am thinking maybe I need to change some register values 
since the description of int19h that I read says that it preserves memory.

Bryan.

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