From 1156e03305e5fbf9343e7c3171ac8ed703f4dbba Mon Sep 17 00:00:00 2001
From: giomba <giomba@glgprograms.it>
Date: Sun, 22 Oct 2023 11:41:16 +0200
Subject: [PATCH] Add small performance test to compute Z80 actual speed.

---
 src/performance_test.asm | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/performance_test.asm

diff --git a/src/performance_test.asm b/src/performance_test.asm
new file mode 100644
index 0000000..6754a70
--- /dev/null
+++ b/src/performance_test.asm
@@ -0,0 +1,17 @@
+SECTION code
+
+PUBLIC _performance_test
+_performance_test:
+    in  a,($A0)
+
+    ld  de,$0100
+loop:
+    ld  a,($d000)           ; 13
+
+    dec de                  ; 6
+    ld  a,d                 ; 4
+    or  e                   ; 4
+    jp  nz,loop             ; 10
+
+    jp  _performance_test
+