lcc.i_o

.PAGE 'LCC.I/O'
;
CNTST= *
;
;
;
;     DEFS FOR LOW COST CONTROLLER
;
;
;     WRITTEN BY GLENN STARK
;     4/1/80
;
;
;   (C) COMMODORE BUSINESS MACHINES
;
TIMER1	=$1805          ; TIMER 1 COUNTER
;
;
;
;   MOS 6522
;   ADDRESS $1C00
;
	* =$1C00
;
DSKCNT	*=*+1           ; PORT B
; DISK I/O CONTROL LINES
; BIT 0: STEP IN
; BIT 1: STEP OUT
; BIT 2: -MOTOR ON
; BIT 3: ACT LED
; BIT 4: WRITE PROTECT SENSE
; BIT 5: DENSITY SELECT 0
; BIT 6: DENSITY SELECT 1
; BIT 7: SYNC DETECT
;
;
DATA2	*=*+1           ; PORT A
; GCR DATA INPUT AND OUTPUT PORT
;
DDRB2	*=*+1           ; DATA DIRECTION CONTROL
DDRA2	*=*+1           ; DATA DIRECTION CONTROL
;
T1LC2	*=*+1           ; TIMER 1 LOW COUNTER
T1HC2	*=*+1           ; TIMER 1 HI COUNTR
;
T1LL2	*=*+1           ; TIMER 1 LOW LATCH
T1HL2	*=*+1           ; TIMER 1 HI LATCH
;
T2LL2	*=*+1           ; TIMER TWO LOW LATCH
T2LH2	*=*+1           ; TIMER TWO HI LATCH
;
SR2	*=*+1           ; SHIFT REGISTER
;
ACR2	*=*+1
;
PCR2	*=*+1
;
IFR2	*=*+1
;
IER2	*=*+1
;
;
	* =CNTST
;
;
;
.END