Add uart printing support.

1 files changed, 62 insertions, 0 deletions

diff --git a/uart.h b/uart.h
new file mode 100644
index 0000000..b5f018d
--- /dev/null
+++ b/uart.h
@@ -0,0 +1,62 @@
+#ifndef __UART_H_LOADED
+#define __UART_H_LOADED
+/*****************************************************************************
+
+       Copyright © 1993, 1994 Digital Equipment Corporation,
+                       Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, provided  
+that the copyright notice and this permission notice appear in all copies  
+of software and supporting documentation, and that the name of Digital not  
+be used in advertising or publicity pertaining to distribution of the software 
+without specific, written prior permission. Digital grants this permission 
+provided that you prominently mark, as not part of the original, any 
+modifications made to this software or documentation.
+
+Digital Equipment Corporation disclaims all warranties and/or guarantees  
+with regard to this software, including all implied warranties of fitness for 
+a particular purpose and merchantability, and makes no representations 
+regarding the use of, or the results of the use of, the software and 
+documentation in terms of correctness, accuracy, reliability, currentness or
+otherwise; and you rely on the software, documentation and results solely at 
+your own risk. 
+
+******************************************************************************/
+
+#define com1Rbr	0x3f8
+#define com1Thr	0x3f8
+#define com1Ier	0x3f9
+#define com1Iir	0x3fa
+#define com1Lcr	0x3fb
+#define com1Mcr	0x3fc
+#define com1Lsr	0x3fd
+#define com1Msr	0x3fe
+#define com1Scr	0x3ff
+#define com1Dll	0x3f8
+#define com1Dlm	0x3f9
+
+#define com2Rbr	0x2f8
+#define com2Thr	0x2f8
+#define com2Ier	0x2f9
+#define com2Iir	0x2fa
+#define com2Lcr	0x2fb
+#define com2Mcr	0x2fc
+#define com2Lsr	0x2fd
+#define com2Msr	0x2fe
+#define com2Scr	0x2ff
+#define com2Dll	0x2f8
+#define com2Dlm	0x2f9
+
+#define COM1	(com1Rbr - com2Rbr)
+#define COM2	0
+
+extern int uart_charav(int port);
+extern int uart_getchar(int port);
+extern void uart_putchar(int port, char c);
+extern void uart_puts(int port, const char *s);
+extern void uart_init(void);
+
+#endif				/* __UART_H_LOADED */