ASM code as slow as basic one in Double HIRES!!

[Cyril Thibout <info@pulsar-informatique.com>]

Hi

I just tried to write an ASM piece of code for Apple IIe Double HIRES with the french ARLEQUIN (chat mauve) library.

This code just switch to DHR and write 15 "X" upon a different background each time.

The big surprise is that the MErlin8 ASM program is as slow as the basic one.

If you don't have the arlequin soft or book , please tell me.

But can you tell me why the ASM version is no faster than the basic one?

thanks

cyril



BASIC code:

10 & WINDOW(0,19,0,191,1): & BACK(4): & MODE(2)
15 & COL(0): & DISPLAY(2)
20 FOR B = 1 TO 15: & BACK(B): & WRITE("X"): NEXT
30 GET A$: & DISPLAY(0): END


ASM (MErlin8)version :

* programme DHR
ORG $8000

WINDOW JSR $1FF0
DFB #$24
DW PCOORD
BACK JSR $1FF0
DFB #$0C
DW PBACK
MODE JSR $1FF0
DFB #$3C
DW PMODE
COL JSR $1FF0
DFB #$08
DW PCOL
DISPLAY JSR $1FF0
DFB #$6C
DW PDISP


LDX #$0F
BOUCLE STX PBACKX
BACKX JSR $1FF0
DFB #$0C
DW PBACKX
WRITEX JSR $1FF0
DFB $40
DW WRITELIST

DEX
BNE BOUCLE


RTS

PCOORD DW $00
DW $13
DW $00
DW $BF
DW $01
PBACK DW $04
PMODE DW $02
PCOL DW $00
PDISP DW $02
PBACKX DW $0F
WRITELIST DW ADPATH
ADPATH DB 1
ASC "X"