Technical data

Block Diagram
E-3
PRIORIS XL 6000
Flash ROM
Flash ROM stores the system BIOS in 256KB of flash memory. Flash memory
allows the BIOS to be upgraded from a diskette or CD-ROM, such as Quick Launch.
Real-Time Clock (RTC)
The Real-Time Clock contains 128 bytes of general purpose RAM that stores system
BIOS configuration information, clock registers, and general purpose control
registers.
NVRAM
This RAM stores EISA configuration information in an 8K x 8 SRAM controlled by the
RTC.
Keyboard/Mouse Controller
One universal peripheral interface microcontroller provides support for both the mini-
DIN PS/2-compatible keyboard connector and the mini-DIN PS/2-style mouse
connector, located on the rear panel. The table below lists both keyboard and mouse
interface pin assignments.
Pin Number Function
1Data
2 Reserved
3 Ground
4+5V
5 Clock
6 Reserved