From 455fd51a87693e8368a520730082fdc0a7c377eb Mon Sep 17 00:00:00 2001
From: tmk <hasu@tmk-kbd.com>
Date: Sat, 5 Sep 2015 09:00:33 +0900
Subject: [PATCH] Fix 'enable break' commands for Alps models

https://geekhack.org/index.php?topic=54706.msg1856618#msg1856618
---
 converter/ibm4704_usb/matrix.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/converter/ibm4704_usb/matrix.c b/converter/ibm4704_usb/matrix.c
index 155df9c38f..5b91d49f81 100644
--- a/converter/ibm4704_usb/matrix.c
+++ b/converter/ibm4704_usb/matrix.c
@@ -68,8 +68,9 @@ uint8_t matrix_cols(void)
 static void enable_break(void)
 {
     print("Enable break: ");
+    while (ibm4704_send(0xFC)) { _delay_ms(10); }
     // valid scancode: 00-79h
-    for (uint8_t code = 0; code < 0x7A; code++) {
+    for (uint8_t code = 0; code < 0x7F; code++) {
         while (ibm4704_send(0x80|code)) _delay_ms(10);
         _delay_ms(5);   // wait for response
         // No response(FF) when ok, FD when out of bound