Tandy 1400LT - Page 276

Read Operations (==O, m=O, m= 1)
I
Address A1 AQ Read Target
1 COUNT STATUS CNT2 CNTl CNTO 1
40H 0 0 Counter 0
0
41H
Latch Stalus
0
I
1
Do Not Latch Status
Counter 1
0
42H 1 0 Counter 2
Latch Count
Control Register Format for Count Latch Command
1
mm
covntsr # 0
covntsr # I
Multiple Latch Command
Do not Latch Count
Control Regester Format for Multiple Latch Command
Oulpul
Null RWMl RWMO CM2 CMI CMO BCO
count
0
1 Counter # 2 Selected
Counler
# 2 Not Selected
0 Count Data Valid
Status Data
1
Count
Dale Invalid
0
OUT P," LOU
F-7