From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 14 Nov 2021 15:46:11 +0000 (+0000)
Subject: fizzbuzz.s: Increment `len' in place rather than via register.
X-Git-Url: https://git.distorted.org.uk/~mdw/zx-fizzbuzz/commitdiff_plain/b4fd018059713a9efdaa72f9017a8d87b7dc7325?ds=sidebyside

fizzbuzz.s: Increment `len' in place rather than via register.

The Z80 isn't a load/store architecture, even though my RISC-programming
habits lead me to treat it like one.
---

diff --git a/fizzbuzz.s b/fizzbuzz.s
index 6a68e9d..76242ef 100644
--- a/fizzbuzz.s
+++ b/fizzbuzz.s
@@ -111,10 +111,9 @@ incr:	ld	a, (hl)
 	djnz	incr
 
 	;; Carry out.
-	ld	a, (len)
 	ld	(hl), 1
-	inc	a
-	ld	(len), a
+	ld	hl, len
+	inc	(hl)
 	jp	again
 
 squish: