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diff cd_graphics.h @ 2069:8e51c0c3f2e3 segacd

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Initial attempt at implementing the Sega CD graphics hardware
author Michael Pavone <pavone@retrodev.com>
date Sun, 30 Jan 2022 19:55:33 -0800
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cd_graphics.h	Sun Jan 30 19:55:33 2022 -0800
@@ -0,0 +1,27 @@
+#ifndef CD_GRAPHICS_H_
+#define CD_GRAPHICS_H_
+
+#include "segacd.h"
+
+enum {
+	GA_STAMP_SIZE = 0x58/2,
+	GA_STAMP_MAP_BASE,
+	GA_IMAGE_BUFFER_VCELLS,
+	GA_IMAGE_BUFFER_START,
+	GA_IMAGE_BUFFER_OFFSET,
+	GA_IMAGE_BUFFER_HDOTS,
+	GA_IMAGE_BUFFER_LINES,
+	GA_TRACE_VECTOR_BASE
+};
+
+//GA_STAMP_SIZE
+#define BIT_GRON 0x8000
+#define BIT_SMS  0x0004
+#define BIT_STS  0x0002
+#define BIT_RPT  0x0001
+
+void cd_graphics_init(segacd_context *cd);
+void cd_graphics_run(segacd_context *cd, uint32_t cycle);
+void cd_graphics_start(segacd_context *cd);
+
+#endif //CD_GRAPHICS_H_