X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=retrocrawl;a=blobdiff_plain;f=src%2Famiga%2Fserial.h;fp=src%2Famiga%2Fserial.h;h=e460c9892457050918f2bd6768ccd475e3a49619;hp=0000000000000000000000000000000000000000;hb=fa6997608f790933b3d4bb9f55d17084f77dfc16;hpb=4c23d7e521ae7ce598447792cec02cba4cf05c87

diff --git a/src/amiga/serial.h b/src/amiga/serial.h
new file mode 100644
index 0000000..e460c98
--- /dev/null
+++ b/src/amiga/serial.h
@@ -0,0 +1,21 @@
+#ifndef SERIAL_H_
+#define SERIAL_H_
+
+#include "hwregs.h"
+
+/* dff030 is REG_SERDAT
+ * dff018 is REG_SERDATR
+ * bit 13 of SERDATR is TBE (transmit buffer empty)
+ */
+#define ser_putchar(c) \
+	asm volatile( \
+		"or.w #0x100, %0\n\t" \
+		"0: btst #13, 0xdff018\n\t" \
+		"beq 0b\n\t" \
+		"move.w %0, 0xdff030\n\t" \
+		:: "d"((int16_t)c))
+
+void ser_init(int baud);
+void ser_print(const char *s);
+
+#endif	/* SERIAL_H_ */