Re: A85: SBC HL, DE

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Re: A85: SBC HL, DE

To: assembly-85@lists.ticalc.org
Subject: Re: A85: SBC HL, DE
From: mgp4007@omega.uta.edu (Michael Pearce)
Date: Tue, 01 Sep 1998 18:10:24 GMT
Delivered-To: assembly-85-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <Pine.SOL.3.94.980901095436.11697A-100000@triton>
References: <Pine.SOL.3.94.980901095436.11697A-100000@triton>
Reply-To: assembly-85@lists.ticalc.org


>I don't think that there are commands for 16-bit subtraction, there is
>only:
> add hl,de 
> add hl,bc
> add hl,hl

use:
 sbc hl,??
the mnemonic is for "subtract with carry", so you may need to add "or
a" before this instruction to clear the carry flag.

-mike pearce

Follow-Ups:

Re: A85: SBC HL, DE

From: Humberto Yeverino <humberto@engr.csufresno.edu>

References:

Re: Re: A85: SBC HL, DE

From: Humberto Yeverino <humberto@engr.csufresno.edu>