English Amiga Board - View Single Post - Optimizing the 68020+ 32-bit math

a/b · 21 June 2021, 21:41

-2 bytes due to alignment (extra zero at the end is never used):

Code:

;         moveq #msg2-msg3+1,d3
         moveq #msg2-msg3,d3
...
;msg3 dc.b ' digits will be printed'
;msg2 dc.b 10,0
msg3 dc.b ' digits will be printed',10
msg2
	even

Since there's some code in between that could be activated (dma on/off)... I'm not familiar with vasm syntax, in asm-one I'd do (and yes, you can do AO there and it will auto-correct it):

Code:

	IFGT	.write-*-128
	bsr.w	.write
	ELSE
	bsr.b	.write
	ENDC	; IFGT

21 June 2021, 21:41	#319
a/b Registered User Join Date: Jun 2016 Location: europe Posts: 1,039	-2 bytes due to alignment (extra zero at the end is never used): Code: ; moveq #msg2-msg3+1,d3 moveq #msg2-msg3,d3 ... ;msg3 dc.b ' digits will be printed' ;msg2 dc.b 10,0 msg3 dc.b ' digits will be printed',10 msg2 even Since there's some code in between that could be activated (dma on/off)... I'm not familiar with vasm syntax, in asm-one I'd do (and yes, you can do AO there and it will auto-correct it): Code: IFGT .write-*-128 bsr.w .write ELSE bsr.b .write ENDC ; IFGT