From: beeanyew <beeanyew@gmail.com>
Date: Sun, 20 Jun 2021 04:13:40 +0000 (+0200)
Subject: [HAX] Try some different IRQ behavior
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=9a043dfb872762b51931c8797e35be8ea8d9f053;p=pistorm

[HAX] Try some different IRQ behavior

May or may not require a make clean, also may or may not require a custom firmware to work.
---

diff --git a/emulator.c b/emulator.c
index 19a1467..519813c 100644
--- a/emulator.c
+++ b/emulator.c
@@ -205,31 +205,16 @@ cpu_loop:
   }
 
   if (irq) {
-    while (irq) {
       last_irq = ((read_reg() & 0xe000) >> 13);
       if (last_irq != last_last_irq) {
         last_last_irq = last_irq;
         M68K_SET_IRQ(last_irq);
       }
-      m68k_execute(5);
-    }
-    if (gayleirq && int2_enabled) {
-      write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
-      last_last_irq = last_irq;
-      last_irq = 2;
-      M68K_SET_IRQ(2);
-    }
+  } else if (!irq && last_last_irq != 0) {
     M68K_SET_IRQ(0);
     last_last_irq = 0;
-    m68k_execute(5);
   }
-  /*else {
-    if (last_irq != 0) {
-      M68K_SET_IRQ(0);
-      last_last_irq = last_irq;
-      last_irq = 0;
-    }
-  }*/
+
   if (do_reset) {
     cpu_pulse_reset();
     do_reset=0;
diff --git a/m68kconf.h b/m68kconf.h
index 3dfbff8..c0f245b 100644
--- a/m68kconf.h
+++ b/m68kconf.h
@@ -89,7 +89,7 @@
  * If off, all interrupts will be autovectored and all interrupt requests will
  * auto-clear when the interrupt is serviced.
  */
-#define M68K_EMULATE_INT_ACK        OPT_SPECIFY_HANDLER
+#define M68K_EMULATE_INT_ACK        OPT_OFF
 #define M68K_INT_ACK_CALLBACK(...)    0xFFFFFFFF