From a2b1ee68c74d38a946c581073432f0c762f93fc6 Mon Sep 17 00:00:00 2001
From: SarahW <SarahW@localhost>
Date: Fri, 28 Apr 2017 16:40:02 +0100
Subject: [PATCH] Removed cycle penalty on AT keyboard controller access. Fixes
 IBM AT booting at 6 MHz.

---
 src/keyboard_at.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/keyboard_at.c b/src/keyboard_at.c
index 135ebe6..c4a3c72 100644
--- a/src/keyboard_at.c
+++ b/src/keyboard_at.c
@@ -445,7 +445,6 @@ void keyboard_at_write(uint16_t port, uint8_t val, void *priv)
 uint8_t keyboard_at_read(uint16_t port, void *priv)
 {
         uint8_t temp = 0xff;
-        cycles -= 4;
 //        if (port != 0x61) pclog("keyboard_at : read %04X ", port);
         switch (port)
         {