
1.3.7Programmable Timer/Counter
zType : 82C54
zCounters : Counter1 and counter2 are cascaded as a 32 bit pacer timer. Counter0 is a user available timer/counter. The software driver also uses counter0 to implement a machine independent timer.
zClock input frequency : DC to 10 MHz
zPacer output : 0.00047Hz to 0.5MHz
zInput ,gate : TTL compatible
zInternal Clock : 2 MHz
1.3.8Direct Memory Access Channel (DMA)
zLevel : CH1 or CH3, jumper selectable
zEnable : via DMA bit of control register
zTermination : by interrupt on T/C
zTransfer rate : 100K conversions/sec.