Counter/Timer; Time Of Day Clock/Cmos Ram And Battery; Mass Storage - Unisys Aquanta CP Series Configuration Manual

System Specifications

Counter/Timer

There is a counter/timer in the Intel PIIX3 PCI chipset which contains three
independent counters. All three counters are driven from a 14.318 MHz oscillator
through a divide-by-12 counter. The output of Counter 0 is connected to the interrupt
controller. It is intended to be used as a multi-level interrupt to the system. The
following programmable counter/timers are supported:
Table A–13. Programmable Counter/Timers
Channel Number
0
1
2

Time of Day Clock/CMOS RAM and Battery

The CMOS-RAM contents and Real Time are maintained by an external 3.0V lithium
battery. All CMOS RAM is reserved for BIOS use. The Real Time Clock will keep
time to an accuracy of + 1 minute per month or +/- 2 seconds per day.

Mass Storage

The system contains three drive bays, one supports a 3.5 inch 1.44MB floppy disk
drive, one a 3.5-inch IDE hard drive ,and one the optional slim CD-ROM.
The power supply provides one standard 4 pin, one mini 4 pin, female power
connector, and one customized power connector for the mass storage devices.
A–16
Function
Supports system time
Supports refresh cycles
Supports the tone generation for the speaker
3814 9779–000