Re: A82: Halt command

To: assembly-82@lists.ticalc.org
Subject: Re: A82: Halt command
From: 82 Master <82world@visi.com>
Date: Sun, 06 Sep 1998 17:41:35 -0500
Delivered-To: assembly-82-outgoing@towerguard.unix.edu.sollentuna.se
Posted-Date: Sun, 6 Sep 1998 17:37:31 -0500 (CDT)
References: <19980906220824.19784.qmail@hotmail.com>
Reply-To: assembly-82@lists.ticalc.org


You better make sure that interrupts are enabled or it should crash. Just
make it:

delay:
    ei
    ld b,20
delay2:
    halt
    djnz delay2
    ret

82 Master
World of 82

Evil Sam wrote:

>    What would cause a halt command to crash?
>
> example:
>   delay:   ;crashes
>     ld b,20
>   delay2:
>     halt
>     djnz Delay2
>     ret
>
>   delay:   ;works
>     ld b,20
>   delay2:
>     push bc
>     pop bc
>     djnz Delay2
>     ret
>
>   I found a way to shrink BD by 960 bytes. The process involves writing
> screen data to APD_BUF and displaying it with ROM_CALL(RESTOR_DISP),
> would this cause the halt command to freeze the calc?
>
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com

References:

A82: Halt command

From: "Evil Sam" <evil_sam@hotmail.com>

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