Initial Commit

2026-08-26 23:09:04 +02:00
commit 1f4390a42b
25 changed files with 13462 additions and 0 deletions
@@ -0,0 +1,34 @@
+#ifndef CPU_H
+#define CPU_H
+
+#include <stdint.h>
+#include <unistd.h>
+
+typedef struct {
+  uint16_t ProgrammeCounter;
+  uint8_t StackPointer;
+
+  uint8_t Accumulator;
+  uint8_t X;
+  uint8_t Y;
+
+  union {
+    uint8_t FlagsByte;
+    struct {
+      uint8_t CarryFlag : 1;
+      uint8_t ZeroFlag : 1;
+      uint8_t InterruptDisable : 1;
+      uint8_t DecimalMode : 1;
+      uint8_t BreakCommand : 1;
+      uint8_t UNUSED : 1;
+      uint8_t OverflowFlag : 1;
+      uint8_t NegativeFlag : 1;
+    } Flags;
+  };
+} CPU;
+
+void initCPU(CPU *cpu);
+void resetCPU(CPU *cpu, uint8_t *rom);
+useconds_t runCycle(CPU *cpu, uint8_t *ram, uint8_t *rom);
+
+#endif // CPU_H