Added optional click when drive head moves

Very primitive but kind of entertaining.

appleiie.go

@@ -68,6 +68,7 @@ func main() {
 	breakAddressString := flag.String("break", "", "Break on address")
 	mute := flag.Bool("mute", false, "Mute sound")
 	diskImage := flag.String("image", "", "Disk Image")
+	clickWhenDriveHeadMoves := flag.Bool("drive-head-click", false, "Click speaker when drive head moves")
 	flag.Parse()
 
 	breakAddress = utils.DecodeCmdLineAddress(breakAddressString)
@@ -88,6 +89,7 @@ func main() {
 	video.Init()
 	audio.InitEbiten()
 	audio.Mute = *mute
+	audio.ClickWhenDriveHeadMoves = *clickWhenDriveHeadMoves
 	system.Init()
 	cpu.Reset()
 

audio/ebiten.go

@@ -8,10 +8,11 @@ import (
 )
 
 var (
-	audioContext *ebiten_audio.Context
-	player       *ebiten_audio.Player
-	firstAudio   bool
-	Mute         bool
+	audioContext            *ebiten_audio.Context
+	player                  *ebiten_audio.Player
+	firstAudio              bool
+	Mute                    bool
+	ClickWhenDriveHeadMoves bool
 )
 
 type stream struct{}
@@ -62,6 +63,7 @@ func (s *stream) Close() error {
 func InitEbiten() {
 	firstAudio = true
 	Mute = false
+	ClickWhenDriveHeadMoves = false
 
 	var err error
 	audioContext, err = ebiten_audio.NewContext(system.AudioSampleRate)

mmu/io.go

@@ -185,6 +185,9 @@ func readWrite(address uint16, isRead bool) bool {
 
 			DriveState.Phase = uint8(phase)
 			MakeTrackData(DriveState.ArmPosition)
+			if audio.ClickWhenDriveHeadMoves {
+				audio.Click()
+			}
 		}
 
 		return true

utils/utils.go

@@ -52,6 +52,7 @@ func DecodeCmdLineAddress(s *string) (result *uint16) {
 func RunUntilBreakPoint(t *testing.T, breakAddress uint16, seconds int, showInstructions bool, message string) {
 	fmt.Printf("Running until %#04x: %s \n", breakAddress, message)
 	system.FrameCycles = 0
+	system.LastAudioCycles = 0
 	exitAtBreak := false
 	disableFirmwareWait := false
 	cpu.Run(showInstructions, &breakAddress, exitAtBreak, disableFirmwareWait, uint64(system.CpuFrequency*seconds))