Re: A86: cphlde

Re: A86: cphlde

• To: assembly-86@lists.ticalc.org
• Subject: Re: A86: cphlde
• From: rabidcow@juno.com
• Date: Mon, 4 May 1998 06:43:53 -0700
• Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
• References: <354D4744.E4206039@eden.rutgers.edu> <19980503.215409.22254.5.rabidcow@juno.com> <354D4C8C.9B4F61E6@eden.rutgers.edu>
• Reply-To: assembly-86@lists.ticalc.org

On Mon, 04 May 1998 01:05:16 -0400 Dux Gregis <assets@eden.rutgers.edu>
writes:
>
>It uses sbc.  I think, but I really have no idea, that the carry flag
>reflects whether or not the carry was subtracted.

push hl		;save hl
or a		;clear a and carry
sbc hl,de	;subtract (compare)
pop hl		;restore hl
ret

c,nz if hl<de
nc,z if hl=de
nc,nz if hl>de

i think that's right.

-josh

_____________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
Or call Juno at (800) 654-JUNO [654-5866]

• A86: cphlde
• From: Dux Gregis <assets@eden.rutgers.edu>
• Re: A86: cphlde
• From: rabidcow@juno.com
• Re: A86: cphlde
• From: Dux Gregis <assets@eden.rutgers.edu>

• Prev: Re: A86: im 2
• Next: Re: A86: cphlde
• Index(es):
  • Main
  • Thread