Re: A82: ASH Routine

Re: A82: ASH Routine

• To: assembly-82@lists.ticalc.org
• Subject: Re: A82: ASH Routine
• From: Barubary <darkstar_usa@pipeline.com>
• Date: Fri, 10 Apr 1998 16:17:33 -0700
• Delivered-To: assembly-82-outgoing@towerguard.unix.edu.sollentuna.se
• Reply-To: assembly-82@lists.ticalc.org

>    I need an ASH routine that will exit to ASH no matter how deep in
>subroutines I am.  I know I can inc the sp register that many times and
>then ret but this routine may be called from many different points in my
>program and I won't know how many subroutines I will be in when it is
>called.

This works in CrASH too BTW.  This uses self-modifying code - if you
don't understand it, don't worry about it.

At very beginning of program:

ld hl,0
add hl,sp
ld (SAVED_SP+1),hl

...

Then later:

EXIT_2_CRASH:
SAVED_SP:
ld sp,0
ret


To return to CrASH, do jp EXIT_2_CRASH

-- Barubary

• Re: A82: ASH Routine
• From: "Thomas J. Hruska" <thruska@tir.com>

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