Re: A86: Floating point?

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: Floating point?
From: "Dux Gregis" <assets@eden.rutgers.edu>
Date: Sun, 6 Dec 1998 22:38:20 -0500
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org



the first byte is the sign byte: $80 for negative, $00 for positive
next follows a word containing the exponent ... the exponent for *10^0 is
$fc00 (*10^1 would be $fc01)
next follow all the digits (converted to hex)

so to put a fp 1 into op1 you would do:

 ld hl,that-1
 rst 20h

that:
.db $00,$00,$fc,$01,$00,$00,$00,$00,$00,$00


>
>What is the format for flaoting point stuff? and how would i put it into
op1
>is it the standard ld command?
>
>note: if anyone wants to make this basic command into asm it would help
>greatly
>note2 this could be alot faster but Im lazy.
>
>1->A
>127->B
>1->C
>1->D                ;in asm 128
>1->CH
>For(Q,1,64)
>Vert A
>Vert C
>Vert B
>Vert D
>A+1->A
>B-1->B
>C+1->C
>D-1->D
>end
>
>Thanx again!
>    (--PsyKabeK--)--)