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SX Microcontroller Radix Math Method


4 bit (and 8 bit) to ASCII Hex

4bit-ASCIIHex:		;***** UNTESTED!!!
	mov temp, w		;save the value
	mov w, #-09
	add w, temp		;compare temp with 9
	mov w, #'A'		;assume it will be more (no change to compare flags)
	snc			;if it was less
	 mov w, #'0'		;correct the offset
	add w, temp		;add the offset to the value
	ret
See: Compareing values in the "X < Y" section "fr < n" subsection for an explination of how the comparison works. For 8 bits you have to call that twice: 
8bit-ASCIIHex:		;***** UNTESTED!!!
	mov w, <>byte		;w is byte with upper and lower nibbles reversed
	and w, #15		;mask off the upper (was lower) 4 bits
	call 4bit-ASCIIHex	;convert that nibble to ASCII Hex
	call Output		;and send it off to where ever
	mov w, byte		;now get the actual value
	and w, #15		;mask off the upper (really) 4 bits
	call 4bit-ASCIIHex	;convert this nibble to ASCII Hex
	call Output		;and send it off.

See also:

file: /Techref/scenix/lib/math/radix/b2a-4b1ah-jn.htm, 1KB, , updated: 2004/6/10 13:40, local time: 2012/2/10 13:48,
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<A HREF="http://www.piclist.com/techref/scenix/lib/math/radix/b2a-4b1ah-jn.htm"> SX Microcontroller Radix Math Method - Binary to BCD half-packed 8 bit to 3 digit</A>
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