testing stuff

[retrocrawl] / src / amiga / copper.h

diff --git a/src/amiga/copper.h b/src/amiga/copper.h
new file mode 100644 (file)
index 0000000..3e64315
--- /dev/null
+++ b/src/amiga/copper.h
@@ -0,0 +1,39 @@
+#ifndef COPPER_H_
+#define COPPER_H_
+
+#include "inttypes.h"
+
+#define COPPER_MOVE(reg, data) (((uint32_t)(reg) << 16) | ((uint32_t)(data) & 0xffff))
+#define COPPER_WAIT(x, y) \
+       (0x0001fffe | ((uint32_t)((x) + 0x81) << 16) | ((uint32_t)((y) + 0x2c) << 24))
+#define COPPER_WAIT_OVERSCAN(x, y) \
+       (0x0001fffe | ((uint32_t)(x) << 16) | ((uint32_t)(y) << 24))
+#define COPPER_VWAIT(s)                        (0x0001ff00 | ((uint32_t)((s) + 0x2c) << 24))
+#define COPPER_VWAIT_OVERSCAN(s) \
+       (0x0001ff00 | ((uint32_t)(s) << 24))
+#define COPPER_OVERFLOW                        0xffdffffe
+#define COPPER_END                             0xfffffffe
+
+extern uint32_t *copperlist, *copperlist_end;
+
+enum {
+       COPPER_SINGLE = 1,
+       COPPER_DOUBLE = 2
+};
+
+int init_copper(int maxlist, int nlists);
+void cleanup_copper(void);
+
+/* enables copper DMA */
+void enable_copper(void);
+/* disables copper DMA */
+void disable_copper(void);
+
+void clear_copper(void);
+void add_copper(uint32_t cmd);
+void sort_copper(void);        /* TODO */
+
+void swap_copper(void);
+
+
+#endif /* COPPER_H_ */