From 0eb7deffb62e5153425c4931ec9d4c8c068c7feb Mon Sep 17 00:00:00 2001
From: beeanyew <beeanyew@gmail.com>
Date: Fri, 1 Jan 2021 11:59:35 +0100
Subject: [PATCH] Fix silly RTC and emulator.c mistakes

---
 emulator.c             |  2 +-
 platforms/shared/rtc.c | 11 ++++++-----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/emulator.c b/emulator.c
index d2d3eab..a898541 100644
--- a/emulator.c
+++ b/emulator.c
@@ -566,7 +566,7 @@ void m68k_write_memory_8(unsigned int address, unsigned int value) {
   PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
 
   if (address == 0xbfe001) {
-    if (ovl != (value & (1 << 0)) {
+    if (ovl != (value & (1 << 0))) {
       ovl = (value & (1 << 0));
       printf("OVL:%x\n", ovl);
     }
diff --git a/platforms/shared/rtc.c b/platforms/shared/rtc.c
index 8b3772c..dd5edad 100644
--- a/platforms/shared/rtc.c
+++ b/platforms/shared/rtc.c
@@ -49,20 +49,21 @@ void put_rtc_byte(uint32_t address_, uint8_t value, uint8_t rtc_type) {
           break;
         case 0x03:
         case 0x06:
-          ricoh_alarm[address] = (value & (0x08 & 0xFF));
+          ricoh_alarm[address] &= (value & (0x08 ^ 0xFF));
           break;
         case 0x05:
         case 0x08:
         case 0x0B:
-          ricoh_alarm[address] = (value & (0x0C & 0xFF));
+          ricoh_alarm[address] = (value & (0x0C ^ 0xFF));
           break;
         case 0x0A:
-          ricoh_alarm[address] = (value & (0x0E & 0xFF));
+          ricoh_alarm[address] = (value & (0x0E ^ 0xFF));
           break;
         default:
           ricoh_alarm[address] = value;
           break;
       }
+      //printf("Write to Ricoh alarm @%.2X: %.2X -> %.2X\n", address, value, ricoh_alarm[address]);
       return;
     }
     else if (address >= 0x0D) {
@@ -105,7 +106,7 @@ uint8_t get_rtc_byte(uint32_t address_, uint8_t rtc_type) {
     case 0x05: // Hours high?
       if (rtc_type == RTC_TYPE_MSM) {
         if (rtc_mystery_reg[2] & 4) {
-          return ((rtc_time->tm_hour / 10) | (rtc_time->tm_hour >= 12) ? 0x04 : 0x00);
+          return (((rtc_time->tm_hour % 12) / 10) | (rtc_time->tm_hour >= 12) ? 0x04 : 0x00);
         }
         else
           return rtc_time->tm_hour / 10;
@@ -115,7 +116,7 @@ uint8_t get_rtc_byte(uint32_t address_, uint8_t rtc_type) {
           return rtc_time->tm_hour / 10;
         }
         else {
-          return ((rtc_time->tm_hour / 10) | (rtc_time->tm_hour >= 12) ? 0x02 : 0x00);
+          return (((rtc_time->tm_hour % 12) / 10) | (rtc_time->tm_hour >= 12) ? 0x02 : 0x00);
         }
         break;
       }
-- 
2.39.2