RE: A83: Floating Point Stack

To: assembly-83@lists.ticalc.org
Subject: RE: A83: Floating Point Stack
From: Sebastiaan Roodenburg <Sebastiaan@rimsystems.nl>
Date: Sun, 29 Aug 1999 20:31:54 +0200
Reply-To: assembly-83@lists.ticalc.org

Hi!

Try the folowing code.. (I didn't test it, so i dont know if it works)
It uses the same stack-space as where the registers are pushed to/poped
from...
(I'm not sure if there is a limmit to the space you can use)

; hl=from
FPpush_asm:
	ex de,hl
	xor a
	ld h,a
	ld l,a
	add hl,sp
	ex de,hl
	ld bc,9
	add hl,bc
	lddr
	ex de,hl
	ld sp,hl
	ret
;de=to
FPpop_asm:
	xor a
	ld h,a
	ld l,a
	add hl,sp
	ld bc,9
	ex de,hl
	add hl,bc
	ex de,hl
	lddr
	ld sp,hl
	ret

Grtx,

Sebastiaan Roodenburg
sebastiaan@rimsystems.nl

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