-#define SET32(r, a, v) r[a] = ((v) & 0xFF000000) >> 24, r[a+1] = ((v) & 0x00FF0000) >> 16, \
- r[a+2] = ((v) & 0x0000FF00) >> 8, r[a+3] = (v) & 0x000000FF
-#define GET32(r, a) ((r[a] << 24) | (r[a+1] << 16) | (r[a+2] << 8) | r[a+3])
-#define SET16(r, a, v) r[a] = ((v) & 0xFF00) >> 8, r[a+1] = (v) & 0xFF
-#define GET16(r, a) ((r[a] << 8) | r[a+1])
+#define SET32(r, a, v) r[(a)] = ((v) & 0xFF000000) >> 24, r[(a)+1] = ((v) & 0x00FF0000) >> 16, \
+ r[(a)+2] = ((v) & 0x0000FF00) >> 8, r[(a)+3] = (v) & 0x000000FF
+#define GET32(r, a) ((r[(a)] << 24) | (r[(a)+1] << 16) | (r[(a)+2] << 8) | r[(a)+3])
+#define SET16(r, a, v) r[(a)] = ((v) & 0xFF00) >> 8, r[(a)+1] = (v) & 0xFF
+#define GET16(r, a) ((r[(a)] << 8) | r[(a)+1])
+
+// Various clock rates
+
+#define M68K_CLOCK_RATE_PAL 13296950
+#define M68K_CLOCK_RATE_NTSC 13295453
+#define RISC_CLOCK_RATE_PAL 26593900
+#define RISC_CLOCK_RATE_NTSC 26590906
+
+// Stuff for IRQ handling
+
+#define ASSERT_LINE 1
+#define CLEAR_LINE 0