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-rw-r--r--include/hw/misc/mos6522.h22
1 files changed, 15 insertions, 7 deletions
diff --git a/include/hw/misc/mos6522.h b/include/hw/misc/mos6522.h
index fc95d22..be5c90d 100644
--- a/include/hw/misc/mos6522.h
+++ b/include/hw/misc/mos6522.h
@@ -41,13 +41,21 @@
#define IER_SET 0x80 /* set bits in IER */
#define IER_CLR 0 /* clear bits in IER */
-#define CA2_INT 0x01
-#define CA1_INT 0x02
-#define SR_INT 0x04 /* Shift register full/empty */
-#define CB2_INT 0x08
-#define CB1_INT 0x10
-#define T2_INT 0x20 /* Timer 2 interrupt */
-#define T1_INT 0x40 /* Timer 1 interrupt */
+#define CA2_INT_BIT 0
+#define CA1_INT_BIT 1
+#define SR_INT_BIT 2 /* Shift register full/empty */
+#define CB2_INT_BIT 3
+#define CB1_INT_BIT 4
+#define T2_INT_BIT 5 /* Timer 2 interrupt */
+#define T1_INT_BIT 6 /* Timer 1 interrupt */
+
+#define CA2_INT BIT(CA2_INT_BIT)
+#define CA1_INT BIT(CA1_INT_BIT)
+#define SR_INT BIT(SR_INT_BIT)
+#define CB2_INT BIT(CB2_INT_BIT)
+#define CB1_INT BIT(CB1_INT_BIT)
+#define T2_INT BIT(T2_INT_BIT)
+#define T1_INT BIT(T1_INT_BIT)
/* Bits in ACR */
#define T1MODE 0xc0 /* Timer 1 mode */