 .PAGE 'I/ODEF'
;*****************************
;*      I/O DEFINITIONS      *
;*****************************
;
UNLSN =$3F ; IEEE UNLISTEN 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
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 6532-1
 .SKI
 * =$200
IEEEDI *=*+1 ;IEEE DATA IN
PADD1 *=*+1 ;IEEE DATA DIR
IEEEDO *=*+1 ;IEEE DATA OUT
PBDD1 *=*+1 ;IEEE DATA OUT DIR
 .SKIP2
; MOS 6532-2
 .SKIP
 * =$280 ;IEEE CONTROL PORT  
PAD2 *=*+1
ATNA =1
DACO =2 ;(INVERTED)
RFDO =4
EOIO =8
DAVO =16
EOII =32
DAVI =64
ATNI =128 ;(INVERTED)
PADD2 *=*+1
PBD2 *=*+1
 ;BITS 0-2 =DEVICE # SELECT
LED1 =$8 ;ACTIVE LED 1
LED0 =$10 ;ACTIVE LED 0
ERRLED =32 ;HARDWARE INIT ERR LED
NDACI =64
NRFDI =128
PBDD2 *=*+1
ATNND *=*+1 ;ATN IS IRQ CAUSING
ATNPD *=*+1
ATNNE *=*+1
ATNPE *=*+1
.END
