From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 14 Nov 2021 15:44:10 +0000 (+0000)
Subject: fizzbuzz.s: Delete pointless calculation of new high digit position.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/zx-fizzbuzz/commitdiff_plain/0e3fb42fd6d951d2372ec63a07d60ece113ba1a1

fizzbuzz.s: Delete pointless calculation of new high digit position.

HL is already in the right place.  We only end up here if `djnz' fails,
which means we've stepped len bytes through buf, and therefore HL now
holds buf + len -- which is what we try to calculate.
---

diff --git a/fizzbuzz.s b/fizzbuzz.s
index 00504d4..6a68e9d 100644
--- a/fizzbuzz.s
+++ b/fizzbuzz.s
@@ -112,10 +112,6 @@ incr:	ld	a, (hl)
 
 	;; Carry out.
 	ld	a, (len)
-	ld	b, 0
-	ld	c, a
-	ld	hl, buf
-	add	hl, bc
 	ld	(hl), 1
 	inc	a
 	ld	(len), a