Tandy 1000 HX Technical Reference Manual page 243

. TANDY COMPUTER PRODUCTS
Figure 3. I/O CHIP SELECT PARAMETERS, READ
I/O CHIP SELECT PARAMETERS, READ
tl
t2
t2A
t3
tl2
tl3
tl4
tl5
tl6
tl7
ADDRESS Valid Setup to STROBE lo
STROBE lo Setup to OSC hi
STROBE lo Length
STROBE hi Setup to OSC hi
DATA Valid Setup to STROBE hi
DATA Hold from STROBE hi
DBDIR hi Delay from STROBE lo
DBENB lo Delay after DBDIR hi
DBENB Hold from STROBE hi
DBDIR Hold after DBENB hi
min typ max
50
15
420
20
90
0
70
70
0
0
NOTE 1
NOTE 1
NOTE 1 ENable should be removed first before changing DIRection,
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