From 3ef337771b399d883957ed485563eb86607f3541 Mon Sep 17 00:00:00 2001
From: tudnai <tamas.rudnai@gmail.com>
Date: Thu, 11 Jun 2020 22:44:53 -0700
Subject: [PATCH] Disk Accelerator enable soft switch

---
 A2Mac/ViewController.swift | 6 ++++--
 src/dev/disk/disk.c        | 4 ++--
 src/dev/disk/disk.h        | 7 +------
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/A2Mac/ViewController.swift b/A2Mac/ViewController.swift
index c585e59..6ceaca1 100644
--- a/A2Mac/ViewController.swift
+++ b/A2Mac/ViewController.swift
@@ -891,10 +891,12 @@ class ViewController: NSViewController  {
     
     @IBAction func QuickDisk(_ sender: NSButton) {
         if sender.state == .on {
-            diskAccelerator_speed = Int32( 25 * M / Double(fps) )
+//            diskAccelerator_speed = Int32( 25 * M / Double(fps) )
+            diskAccelerator_enabled = 1;
         }
         else {
-            diskAccelerator_speed = 0
+//            diskAccelerator_speed = 0
+            diskAccelerator_enabled = 0;
         }
     }
 
diff --git a/src/dev/disk/disk.c b/src/dev/disk/disk.c
index 7cbdb1d..a2791e6 100644
--- a/src/dev/disk/disk.c
+++ b/src/dev/disk/disk.c
@@ -21,7 +21,7 @@ disk_t disk = {
 const int diskAccelerator_frames  = 2;
 int diskAccelerator_count = 0;
 int diskAccelerator_speed = 25 * M / fps; // if less than actual CPU speed means no acceleration
-
+int diskAccelerator_enabled = 1;
 
 // motor position from the magnet state
 // -1 means invalid, not supported
@@ -68,7 +68,7 @@ const uint8_t log2phy_cpm[16] = {
 
 
 void disk_accelerator_speedup() {
-    if ( diskAccelerator_speed >= clk_6502_per_frm ) {
+    if ( ( diskAccelerator_enabled ) && ( diskAccelerator_speed >= clk_6502_per_frm ) ) {
         clk_6502_per_frm =
         clk_6502_per_frm_max = diskAccelerator_speed;  // clk_6502_per_frm_diskAccelerator;
         diskAccelerator_count = diskAccelerator_frames;
diff --git a/src/dev/disk/disk.h b/src/dev/disk/disk.h
index 5d6e178..37a27f5 100644
--- a/src/dev/disk/disk.h
+++ b/src/dev/disk/disk.h
@@ -56,12 +56,7 @@ extern const int position_to_direction[8][8];
 extern const int diskAccelerator_frames;    // number of frames disk acceleration will be on
 extern int diskAccelerator_count;           // counter for the disk acceleration frames
 extern int diskAccelerator_speed;           // if less than the actual CPU speed, no acceleration
-
-extern int diskAccelerator_count;
-extern int diskAccelerator_speed;
-
-//extern const unsigned long long clk_6502_per_frm_diskAccelerator;
-//extern const unsigned long long clk_diskAcceleratorTimeout;
+extern int diskAccelerator_enabled;
 
 extern void disk_phase(void);
 extern void disk_phase_on( uint8_t currentMagnet );