Fix interrupt acknowledging

2 files changed, 4 insertions, 5 deletions

diff --git a/emulator.cpp b/emulator.cpp
index 7be1c8a..262f160 100644
--- a/emulator.cpp
+++ b/emulator.cpp
@@ -8,6 +8,7 @@
 #include "gdbremote_parser.hpp"
 #include "utils.hpp"
 #include "musashi-m68k/m68k.h"
+#include "musashi-m68k/m68kcpu.h"
 
 #include <arpa/inet.h>
 #include <algorithm>
@@ -335,9 +336,8 @@ void m68k_reset_callback(void)
 int m68k_irq_ack(int level)
 {
     (void) level;
-    // TODO
-    printf("IRQ level %d acknowledged\n", level);
-    return level;
+    CPU_INT_LEVEL = 0;
+    return M68K_INT_ACK_AUTOVECTOR;
 }
 
 static void make_hex(char* buff, unsigned int pc, unsigned int length)
diff --git a/vdp.cpp b/vdp.cpp
index 765855c..7b27a79 100644
--- a/vdp.cpp
+++ b/vdp.cpp
@@ -259,8 +259,7 @@ bool VDP::Scanline()
     if (_lines_counter >= lines_per_screen) {
         _lines_counter = 0;
         if (MODESET2_IE0_GET(mode_set_2)) {
-            // TODO somehow this acknowledgment messes up the `hello word` example
-            //m68k_set_irq(6);
+            m68k_set_irq(M68K_IRQ_6);
             _status.vblank = true;
             return true;
         }