t3
AX, AEN,
nIOCS16
t2
t1
t4
nIOW
t5
DATA
(D0-D7)
DATA VALID
t6
FINTR
PINTR
t7
NOTE: PINTR is the interrupt assigned to the Parallel Port
FINTR is the interrupt assigned to the Floppy Disk
Parameter
min
typ
max
units
t1
40
ns
A0-A9, AEN, nIOCS16 Set Up to
nIOW Low
t2
t3
nIOW Width
150
10
ns
ns
A0-A9, AEN, nIOCS16 Hold from
nIOW High
Data Set Up Time to nIOW High
40
10
t4
t5
t6
ns
ns
ns
Data Hold Time from nIOW High
Write Strobe to Clear FINTR
40
55
nIOW Inactive to PINTR Inactive
t7
ns
260
FIGURE 4 - MICROPROCESSOR WRITE TIMING
140