[A83] ex af,af'

[A83] ex af,af'

• To: <assembly-83@lists.ticalc.org>
• Subject: [A83] ex af,af'
• From: =?iso-8859-1?Q?Jens_Bj=F6rnhager?= <jensbj@home.se>
• Date: Sun, 30 Dec 2001 05:27:16 +0100
• Organization: MDH
• References: <200112291627.QAA18691@chup-a-chup.scarlet.nl>
• Reply-To: assembly-83@lists.ticalc.org

What is the difference between

   push af
   ld a,d
   lcddata
   pop af

and:

   ex af,af'
   ld a,d
   lcddata
   ex af,af'

excluding the fact that the value in af' gets lost? As interrupts are =
disabled, I figured that the latter could work just like the first one, =
but I was mistaken. If I use the ex af,af' method of preserving a, the =
rle decoding routine that it is part of decodes the image erroneously =
SOMETIMES. The decoder's function gets unreliable. How can this be?

/Jens

• [A83] Re: ex af,af'
• From: David Phillips <david@acz.org>
• [A83] Re: ex af,af'
• From: Patai Gergely <patai.ti@freemail.hu>

• [A83] Ti83+ SDK PDF
• From: "Henk Poley" <HPoley@DDS.nl>

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