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--- base:another_hexadecimal_to_decimal_conversion [2015-04-17 04:30] – external edit 127.0.0.1
+++ base:another_hexadecimal_to_decimal_conversion [2020-11-14 22:54] – fixed typos in comments mace
@@ Line 18: / Line 18: @@
 		rol lobyte
 		rol hibyte
-		bcs calculate	// when a bit drops off, it means we need to calculate
+		bcs calculate	// when bit drops off, decimal value must be added
 				// if not, go to the next bit
 		txa
-		axs #$05	// ILLEGAL OPCODE, use the 3 lines below as alternative
+		axs #$05	// ILLEGAL OPCODE, alternatively use lines below
 				// sec
 				// sbc #$05
 				// tax
-		cpx #$ff
+		bpl loop1
-		bne loop1
 END:
 		rts
@@ Line 34: / Line 33: @@
 		ldy #$04
 loop2:
-		lda table,x	// get the decimal equivalent of the bit in ASCII numbers
+		lda table,x	// get decimal equivalent of bit in ASCII numbers
-		beq zero	// skip (speed up) when there's nothing to add
+		adc #$00        // add carry, is set if the former addition ≥10
-		adc result,y	// add to whatever result we alread haven
+                beq zero	// skip (speed up) when there's nothing to add
-		cmp #$3a	// passing 10 with the addition?
+		adc result,y	// add to whatever result we already have
-		bcc notten
+		cmp #$3a	// ≥10 with the addition?
-		sbc #$0a	// if so, subtract 10, carry will take care of overflow
+		bcc notten      // if not, skip the subtraction
+		sbc #$0a	// subtract 10
 notten:
 		sta result,y