t10
AEN
t3
SA[x], nCS
t2
t1
t4
t6
nIOW
SD[x]
t5
t7
DATA VALID
FINTR
PINTR
IBF
t8
t9
FIGURE 4 - ISA WRITE
DESCRIPTION
NAME
MIN
10
TYP
MAX UNITS
t1
t2
SA[x], nCS and AEN valid to nIOW asserted
nIOW asserted to nIOW deasserted
ns
ns
ns
ns
80
t3
nIOW asserted to SA[x], nCS invalid
10
t4
SD[x] Valid to nIOW deasserted
45
t5
SD[x] Hold from nIOW deasserted
0
ns
ns
ns
ns
ns
ns
t6
nIOW deasserted to nIOW asserted
25
10
t7
nIOW deasserted to FINTR deasserted (Note 1)
nIOW deasserted to PINTER deasserted (Note 2)
IBF (internal signal) asserted from nIOW deasserted
nIOW deasserted to AEN invalid
55
260
40
t8
t9
t10
Note 1: FINTR refers to the IRQ used by the floppy disk.
Note 2: PINTR refers to the IRQ used by the parallel port
153
SMSC [ SMSC CORPORATION ]
