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Programming:Reverse A - CPCWiki
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Last modified on 18 April 2011, at 23:56

Programming:Reverse A

Revision as of 23:56, 18 April 2011 by Octoate (Talk | contribs) (layout)

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This routine will return the reverse order of register A. 

;
;- Reverse a
;Input:		A
;Output:	Reversed A
;Destroys:	B
;Length: 	18 bytes
;Author: 	calcmaniac84
;
ReverseA:
	ld b,a
	rrca
	rrca
	xor b
	and %10101010
	xor b
	ld b,a
	rrca
	rrca
	rrca
	rrca
	xor b
	and %01100110
	xor b
	rrca
	ret