Removed useless cruft, fixed off-by-one bug in screen render.

[thunder] / src / v6809.h

diff --git a/src/v6809.h b/src/v6809.h
old mode 100644 (file)
new mode 100755 (executable)
index 380318c..ae8a337
--- a/src/v6809.h
+++ b/src/v6809.h
@@ -1,9 +1,9 @@
 //
 // Virtual 6809 Header file
 //
-// by James Hammons
+// by James L. Hammons
 //
-// (C) 1997, 2014 Underground Software
+// (C) 1997, 2004 Underground Software
 //
 
 #ifndef __V6809_H__
@@ -13,14 +13,14 @@
 
 // Useful defines
 
-#define FLAG_E 0x80            // Entire
-#define FLAG_F 0x40            // Fast IRQ
-#define FLAG_H 0x20            // Half carry
-#define FLAG_I 0x10            // IRQ
-#define FLAG_N 0x08            // Negative
-#define FLAG_Z 0x04            // Zero
-#define FLAG_V 0x02            // oVerflow
-#define FLAG_C 0x01            // Carry
+#define FLAG_E         0x80            // Entire
+#define FLAG_F         0x40            // Fast IRQ
+#define FLAG_H         0x20            // Half carry
+#define FLAG_I         0x10            // IRQ
+#define FLAG_N         0x08            // Negative
+#define FLAG_Z         0x04            // Zero
+#define FLAG_V         0x02            // oVerflow
+#define FLAG_C         0x01            // Carry
 
 #define V6809_ASSERT_LINE_RESET                0x0001          // v6809 RESET line
 #define V6809_ASSERT_LINE_IRQ          0x0002          // v6809 IRQ line
@@ -28,6 +28,7 @@
 #define V6809_ASSERT_LINE_NMI          0x0008          // v6809 NMI line
 #define V6809_STATE_SYNC                       0x0010          // v6809 SYNC line
 #define V6809_STATE_ILLEGAL_INST       0x0020          // Illegal instruction executed flag
+
 //#define V6809_START_DEBUG_LOG        EQU     0020h           // Debug log go (temporary!)
 
 // Useful structs
@@ -43,10 +44,9 @@ struct V6809REGS
        uint8_t a;                                              // 6809 A register
        uint8_t b;                                              // 6809 B register
        uint8_t dp;                                             // 6809 Direct Page register
-//     uint32_t clock;                                 // 6809 clock (@ 1 MHz, wraps at 71.5 minutes)
        uint64_t clock;                                 // 6809 clock (@ 1 MHz, wraps at 570842 years)
-       uint8_t (* RdMem)(uint16_t);            // Address of uint8_t read routine
-       void (* WrMem)(uint16_t, uint8_t);      // Address of uint8_t write routine
+       uint8_t (* RdMem)(uint16_t);    // Address of uint8 read routine
+       void (* WrMem)(uint16_t, uint8_t);      // Address of uint8 write routine
        uint32_t cpuFlags;                              // v6809 IRQ/RESET flags
        uint32_t clockOverrun;
 };