Re: A83: setting flags

To: assembly-83@lists.ticalc.org
Subject: Re: A83: setting flags
From: Scott Dial <wrath@calc.org>
Date: Sun, 12 Sep 1999 22:53:02 -0500
Organization: ByMe Inc. Technologies \ TCPA
References: <b65a57fb.250d98ee@aol.com>
Reply-To: assembly-83@lists.ticalc.org


To further explain what he meant... since you cannot directly affect f
you will have to push af \ pop bc and modify c, then push bc \ pop af.
For example:

	push af
	pop bc
	or %01000000 ; This would set the zero flag
	push bc
	pop af

Edub311@aol.com wrote:
> 
> Flags are stored in the F register.  The bits are as follows:
> 
> bit 7: Sign flag
> bit 6: zero flag
> bit 5: unused
> bit 4: half carry
> bit 3: unused
> bit 2: Parity/Overflow
> bit 1: Add/subtract flag
> bit 0: carry flag
> 
> you can change the flags using bit masking techniques
> 
>                                                             bud

-- 
Scott "_Wrath_" Dial
wrath@calc.org
ICQ#3608935
TimeCity Co-Lead Developer, AI - www.timecity.org
Member of TCPA - tcpa.calc.org

References:

Re: A83: setting flags

From: Edub311@aol.com

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