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branches/s100/Applegate/ccs2710.inc

@@ -1,77 +1,77 @@
-		.page
-;********************************************************
-; These are I/O functions for the CCS 2710 four-port
-; serial I/O board.
-;
-; Bob Applegate, 02/16/2008
-;
-SIObase		.equ	0E0H
-;
-SIODATA		.equ	SIObase
-SIOBAUDL	.equ	SIObase		;also used for baud rate
-SIOINTEN	.equ	SIObase+1
-SIOBAUDH	.equ	SIObase+1	;ditto
-SIOIDENT	.equ	SIObase+2
-SIOLCTRL	.equ	SIObase+3
-SIOMDMCT	.equ	SIObase+4
-SIOLSTAT	.equ	SIObase+5
-SIOMDMST	.equ	SIObase+6
-BAUD03		.equ	0180H	;divisor for 300 baud
-BAUD12		.equ	060H	;1200 baud
-BAUD_2400	.equ	030h	;2400 baud
-BAUD96		.equ	00CH	;9600 baud
-DATRDY		.equ	01H	;rec'd data ready
-TXMTY		.equ	20H	;transmitter holding reg empty
-HSMSK		.equ	20H
-
-BAUD_RATE	.equ	BAUD_2400
-
-;
-; This function initializes the main console port for the
-; default baud rate.
-;
-initser:	ld	a,0fH
-		out	(SIOMDMCT),a
-		ld	a,083H		;enable divisor latch access
-		out	(SIOLCTRL),a
-		ld	a,BAUD_RATE / 256	;get hi byte
-		out	(SIOBAUDH),a
-		ld	a,BAUD_RATE % 256	;get low byte
-		out	(SIOBAUDL),a
-		ld	a,03H		;8 data bits, one stop bit, no parity
-		out	(SIOLCTRL),a
-		xor	a		;clear acc
-		out	(SIOINTEN),a	;disable ints
-		out	(SIOLSTAT),a	;clear status
-		in	a,(SIODATA)	;clear out any garbage in rec'd data reg
-		ret
-;
-; TTY output of character in C.  Modifies A.
-;
-ttyout:		IN	A,(SIOLSTAT)		;was A,TTS, read status port
-		AND	TXMTY		;check buffer empty bit
-		JR	Z,ttyout		;branch if not empty
-		LD	A,C
-		OUT	(SIODATA),A		;was TTO,A, send out character
-		RET			;thassit
-;
-; Check to see if a character is ready to be read from the TTY.
-; Returns TRUE (0ffh) in A is there is a character waiting, or
-; FALSE (0) if there is nothing.
-;
-ttystat:	IN	A,(SIOLSTAT)		;was A,TTS
-		AND	DATRDY
-		LD	A,TRUE		;was FALSE
-		RET	NZ
-		CPL
-		RET
-;
-; This gets the next character from the TTY and returns it in A.
-; This will block if there is nothing waiting.
-;
-ttyin:		IN	A,(SIOLSTAT)		;read status reg
-		AND	DATRDY		;look for data ready
-		JR	Z,ttyin		;wait for char
-		IN	a,(SIODATA)		;read character
-		RET
-		.page
+		.page
+;********************************************************
+; These are I/O functions for the CCS 2710 four-port
+; serial I/O board.
+;
+; Bob Applegate, 02/16/2008
+;
+SIObase		.equ	0E0H
+;
+SIODATA		.equ	SIObase
+SIOBAUDL	.equ	SIObase		;also used for baud rate
+SIOINTEN	.equ	SIObase+1
+SIOBAUDH	.equ	SIObase+1	;ditto
+SIOIDENT	.equ	SIObase+2
+SIOLCTRL	.equ	SIObase+3
+SIOMDMCT	.equ	SIObase+4
+SIOLSTAT	.equ	SIObase+5
+SIOMDMST	.equ	SIObase+6
+BAUD03		.equ	0180H	;divisor for 300 baud
+BAUD12		.equ	060H	;1200 baud
+BAUD_2400	.equ	030h	;2400 baud
+BAUD96		.equ	00CH	;9600 baud
+DATRDY		.equ	01H	;rec'd data ready
+TXMTY		.equ	20H	;transmitter holding reg empty
+HSMSK		.equ	20H
+
+BAUD_RATE	.equ	BAUD_2400
+
+;
+; This function initializes the main console port for the
+; default baud rate.
+;
+initser:	ld	a,0fH
+		out	(SIOMDMCT),a
+		ld	a,083H		;enable divisor latch access
+		out	(SIOLCTRL),a
+		ld	a,BAUD_RATE / 256	;get hi byte
+		out	(SIOBAUDH),a
+		ld	a,BAUD_RATE % 256	;get low byte
+		out	(SIOBAUDL),a
+		ld	a,03H		;8 data bits, one stop bit, no parity
+		out	(SIOLCTRL),a
+		xor	a		;clear acc
+		out	(SIOINTEN),a	;disable ints
+		out	(SIOLSTAT),a	;clear status
+		in	a,(SIODATA)	;clear out any garbage in rec'd data reg
+		ret
+;
+; TTY output of character in C.  Modifies A.
+;
+ttyout:		IN	A,(SIOLSTAT)		;was A,TTS, read status port
+		AND	TXMTY		;check buffer empty bit
+		JR	Z,ttyout		;branch if not empty
+		LD	A,C
+		OUT	(SIODATA),A		;was TTO,A, send out character
+		RET			;thassit
+;
+; Check to see if a character is ready to be read from the TTY.
+; Returns TRUE (0ffh) in A is there is a character waiting, or
+; FALSE (0) if there is nothing.
+;
+ttystat:	IN	A,(SIOLSTAT)		;was A,TTS
+		AND	DATRDY
+		LD	A,TRUE		;was FALSE
+		RET	NZ
+		CPL
+		RET
+;
+; This gets the next character from the TTY and returns it in A.
+; This will block if there is nothing waiting.
+;
+ttyin:		IN	A,(SIOLSTAT)		;read status reg
+		AND	DATRDY		;look for data ready
+		JR	Z,ttyin		;wait for char
+		IN	a,(SIODATA)		;read character
+		RET
+		.page