Mostek z80 - Page 27

2-5
3. Pins 2, 7, 8, 9, 10, and 15 allow the event counter to be extended to 16
bi ts by using channel one of the OEM-80 C'K: for the upper eight bits.
Only one AIM-Z80AE can have the event counter extended to sixteen
bits.
EIGHT BIT EVENT COUNTER
SIXTEEN BIT EVENT COUNTER
1
16
1 16
2
15 2 15
3
14
3 14
4
13
4 13
5 12
5 12
6
11
6 11
7 10
7 ...
10
8
...
9 8
9