i_odef.sf

.PAGE 'I/ODEF.SF'
;*****************************
;*      I/O DEFINITIONS      *
;*****************************
;
UNLSN	=$3F            ; IEEE UNLISTEN COMMAND
UNTLK	=$5F            ; IEEE UNTALK COMMAND
NOTRDY	=$0             ; NOT READY
TALKER	=$80            ; IEEE TALKER FLAG
LISNER	=1 ; IEEE LISTENER FLAG
EOIOUT	=$80            ; TALK WITH EOI
EOISND	=$08            ; NOT(EOI) TO SEND
EOI	=$08            ; NOT(EOI) TO SEND
RDYTLK	=$88            ; TALK NO EOI
RDYLST	=$1             ; READY TO LISTEN
RNDRDY	=RDYTLK+RDYLST  ; RANDOM CHNRDY
RNDEOI	=EOIOUT+RDYLST  ; RANDOM W/ EOI
.SKI 3
;I/O REGISTERS
.SKIP
; MOS 6522-A
.SKI
	* =$1800
;IEEE CONTROL PORT
PB	*=*+1           ; SERIAL PORT
PA1	*=*+1           ; UNUSED PORT
DDRB1	*=*+1
DDRA1	*=*+1           ;IEEE DATA DIR
T1LC1	*=*+1           ; TIMER 1 LOW COUNTER
T1HC1	*=*+1           ; TIMER 1 HI COUNTER
T1LL1	*=*+1           ; TIMER 1 LOW LATCH
T1HL1	*=*+1           ; TIMER 1 HI LATCH
T2LC1	*=*+1           ; TIMER 2 LOW COUNTER
T2HC1	*=*+1           ; TIMER 2 HI COUNTER
SR1	*=*+1           ; SHIFT REG
ACR1	*=*+1           ; AUX CONTROL REG
PCR1	*=*+1
IFR1	*=*+1
IER1	*=*+1
POTA1	*=*+1          ; BIT 0: TRACK 0 SENSE, 1=TRK0
;
;
;
;  BITS FOR SERIAL HANDSHAKE
;
DATIN	=$1             ;DATA IN LINE
DATOUT	=$2             ; DATA OUT
CLKIN	=$4             ;CLOCK IN
CLKOUT	=$8             ;CLOCK OUT
ATNA	=$10            ;ATNA ACK
ATN	=$80            ; ATN IN
;
;
LED0	=8 ; ACT LED
LED1	=0 ; NO LED
LEDPRT=$1C00  ; ON PB OF $1C00
LEDOUT=$1C02 ; DDRB  OF $1C00 FOR OUTPUT-LED
;
;
.END