From 81c77c77008c4c766ae7afad5f80a21b9efeba40 Mon Sep 17 00:00:00 2001
From: Ivan Izaguirre <ivanizag@gmail.com>
Date: Thu, 13 Aug 2020 20:34:37 +0200
Subject: [PATCH] CPU execution with bursts

---
 apple2.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/apple2.go b/apple2.go
index 53b6c46..4b8e01a 100644
--- a/apple2.go
+++ b/apple2.go
@@ -33,7 +33,10 @@ const (
 	cpuClockEuroMhz = 14.238 / 14
 )
 
-const maxWaitDuration = 100 * time.Millisecond
+const (
+	maxWaitDuration = 100 * time.Millisecond
+	cpuSpinLoops    = 100
+)
 
 // Run starts the Apple2 emulation
 func (a *Apple2) Run() {
@@ -47,8 +50,10 @@ func (a *Apple2) Run() {
 	for {
 		// Run a 6502 step
 		if !a.paused {
-			a.cpu.ExecuteInstruction()
-			a.executionTrace()
+			for i := 0; i < cpuSpinLoops; i++ {
+				a.cpu.ExecuteInstruction()
+				a.executionTrace()
+			}
 		} else {
 			time.Sleep(200 * time.Millisecond)
 		}