emulator uses a bus now in the cpu, ROM, RAM and VIA (7-seg) are devices connected to the bus

1 files changed, 24 insertions, 0 deletions

diff --git a/emu/device.h b/emu/device.h
new file mode 100644
index 0000000..ce2abad
--- /dev/null
+++ b/emu/device.h
@@ -0,0 +1,24 @@
+#ifndef DEVICE_H
+#define DEVICE_H
+
+#include <stdint.h>
+
+struct device_t;
+
+typedef struct device_vtable_t {
+	uint8_t (*read)( void *obj, uint16_t addr );
+	void (*write)( void *obj, uint16_t addr, uint8_t data );
+	void (*deinit)( void *obj );	
+} device_vtable_t;
+
+typedef struct device_t {
+	device_vtable_t const *vtable;
+	char *name;
+} device_t;
+
+void device_init( device_t *device, const char *name );
+uint8_t device_read( void *obj, uint16_t addr );
+void device_write( void *obj, uint16_t addr, uint8_t data );
+void device_deinit( void *obj );
+
+#endif