ADLINK ACL-8112 Series - Manual (Page 57)

Operation Theory
• 49
0 16-BITS BINARY COUNTER
1
BINARY CODED DECIMAL (BCD) COUNTER (4
DIGITAL)
Note
The count of the binary counter is from 0 up to
65,535 and the count of the BCD counter is from 0
up to 9,999
Mode Definitions
With the 8254, six operating modes can be selected. they are:
• Mode 0: Interrupt on Terminal Count
• Mode 1: Programmable One-Shot.
• Mode 2: Rate Generator
• Mode 3: Square Wave Rate Generator
• Mode 4: Software Triggered Strobe
• Mode 5: Hardware Triggered Strobe
Detail description of these six modes is written in Intel Microsystems
Components Handbook Volume II Peripherals.