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[v3,01/12] mos6522: add defines for IFR bit flags

Message ID 20220305141044.31911-2-mark.cave-ayland@ilande.co.uk
State New
Headers show
Series mos6522: switch to gpios, add control line edge-triggering and extra debugging | expand

Commit Message

Mark Cave-Ayland March 5, 2022, 2:10 p.m. UTC 
These are intended to make it easier to see how the physical control lines
are wired for each instance.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
---
 include/hw/misc/mos6522.h | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)
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Patch

diff --git a/include/hw/misc/mos6522.h b/include/hw/misc/mos6522.h
index fc95d22b0f..be5c90d24d 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 */