From ae4e0ae9f15aa9f66d74518149687dde39f84c2d Mon Sep 17 00:00:00 2001
From: beeanyew <beeanyew@gmail.com>
Date: Fri, 18 Jun 2021 17:32:32 +0200
Subject: [PATCH] Add some Mac thing to enable/disable ROM overlay

---
 emulator.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/emulator.c b/emulator.c
index 0ea23f0..d70ad21 100644
--- a/emulator.c
+++ b/emulator.c
@@ -971,6 +971,19 @@ unsigned int m68k_read_memory_32(unsigned int address) {
 
 static inline int32_t platform_write_check(uint8_t type, uint32_t addr, uint32_t val) {
   switch (cfg->platform->id) {
+    case PLATFORM_MAC:
+      switch (addr) {
+        case 0xEFFFFE: // VIA1?
+          if (val & 0x10 && !ovl) {
+              ovl = 1;
+              printf("[MAC] OVL on.\n");
+          } else if (ovl) {
+            ovl = 0;
+            printf("[MAC] OVL off.\n");
+          }
+          break;
+      }
+      break;
     case PLATFORM_AMIGA:
       switch (addr) {
         case CIAAPRA:
-- 
2.39.2