initial import of NetBSD tree

1 files changed, 86 insertions, 0 deletions

diff --git a/sys/arch/atari/include/acia.h b/sys/arch/atari/include/acia.h
new file mode 100644
index 00000000000..870b900b2df
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+++ b/sys/arch/atari/include/acia.h
@@ -0,0 +1,86 @@
+/*	$NetBSD: acia.h,v 1.3 1995/06/09 19:47:30 leo Exp $	*/
+
+/*
+ * Copyright (c) 1995 Leo Weppelman.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Leo Weppelman.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _MACHINE_ACIA_H
+#define _MACHINE_ACIA_H
+/*
+ * Atari ST hardware:
+ * Motorola 6850 Asynchronous Communications Interface Adapter
+ */
+
+#define	KBD	(((struct acia *)AD_ACIA))
+#define	MDI	(((struct acia *)AD_ACIA) + 1)
+
+struct acia {
+	volatile u_char	acb[4];	/* use only the even bytes */
+};
+
+#define	ac_cs	acb[0]		/* control and status register	*/
+#define	ac_da	acb[2]		/* data register		*/
+
+/* bits in control register: */
+/*		0x03		*//* clock divider */
+#define A_Q01	0x00		/* don't divide				*/
+#define A_Q16	0x01		/* divide by 16				*/
+#define A_Q64	0x02		/* divide by 64				*/
+#define A_RESET	0x03		/* master reset				*/
+/*		0x1C		*//* word select bits */
+#define	A_72E	0x00		/* 7 data, 2 stop, parity even		*/
+#define	A_72O	0x04		/* 7 data, 2 stop, parity odd		*/
+#define	A_71E	0x08		/* 7 data, 1 stop, parity even		*/
+#define	A_71O	0x0C		/* 7 data, 1 stop, parity odd		*/
+#define	A_82N	0x10		/* 8 data, 2 stop, no parity		*/
+#define	A_81N	0x14		/* 8 data, 1 stop, no parity		*/
+#define	A_81E	0x18		/* 8 data, 1 stop, parity even		*/
+#define	A_81O	0x1C		/* 8 data, 1 stop, parity odd		*/
+/*		0x60		*//* RTS Low/High, TXINT en/dis, BREAK	*/
+#define	A_TXPOL	0x00		/* RTS Low, TXINT disabled		*/
+#define	A_TXINT	0x20		/* RTS Low, TXINT enabled		*/
+#define	A_TXOFF	0x40		/* RTS High, TXINT disabled		*/
+#define	A_BREAK	0x60		/* RTS Low, TXINT disabled, BREAK	*/
+#define	A_RXINT	0x80		/* enable receiver interrupt		*/
+
+/* bits in status register: */
+#define	A_RXRDY	0x01		/* receiver ready			*/
+#define	A_TXRDY	0x02		/* transmitter ready			*/
+#define	A_CLOST	0x04		/* Carrier Lost				*/
+#define	A_CTS	0x08		/* Clear To Send			*/
+#define	A_FE	0x10		/* Frame Error				*/
+#define	A_OE	0x20		/* Overrun Error			*/
+#define	A_PE	0x40		/* Parity Error				*/
+#define	A_IRQ	0x80		/* State of IRQ signal			*/
+
+/* values for the TT: */
+#define	KBD_INIT	(A_81N|A_Q64)
+#define	MDI_INIT	(A_81N|A_Q16)
+
+#endif /* _MACHINE_ACIA_H */