[A83] Re: Sprites in 83+ ASM

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Sprites in 83+ ASM
From: "Steve Watson" <fif_freak00@hotmail.com>
Date: Sat, 10 Mar 2001 12:51:15 -0700
Reply-To: assembly-83@lists.ticalc.org


Well, neither of the sprite things you guys sent worked!  Remember, I asked 
for 83+ sprite routines, NOT 83, so I had to port them...here's the code I 
used:

.NOLIST
#define EQU .equ
#define equ .equ
#define END .end
#include "custinc.inc"
.LIST
	.org 9D95h
	B_CALL(_clrfull)
	B_CALL(_grbufclr)
	ld hl,sprite
	ld de,VideoRam
	call AlignedSprite
	B_CALL(_grbufcpy)
; de = sprite, hl = offset in buffer
AlignedSprite:
	ld a,8                      ; sprite is 8 pixels high
	ld bc,12                    ; rows are 12 bytes apart
AlignedSpriteLoop:
	ld a,(de)                   ; get byte from sprite
	inc de                      ; increment sprite pointer to next row
	ld (hl),a                   ; write byte to video memory
	add hl,bc                   ; point to next row
	dec a                       ; decrement counter
	jr nz,AlignedSpriteLoop     ; loop for all bytes
	ret                         ; all done

Sprite:
	.db %00111100
	.db %01000010
	.db %10001001
	.db %10000101
	.db %10000101
	.db %10000001
	.db %01000010
	.db %00111100
.end
end

Is there anything wrong?  And just to tell you, I'm 12, and I just started 
ASM.
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