15 programmable controller (pld), 16 cmos ram and rtc, 17 configuration – Endura RADISYS KP915GV User Manual
Page 31: 18 bios

KP915GV Product Manual
31
2.15
Programmable Controller (PLD)
•
Programmable logic device to support configurable system functions
•
Supports software-based updates (including field updates)
•
Supports customizable logic (by RadiSys, not user customizable)
•
Option of 128 or 256 macrocell device (256 for enhanced controller)
•
Controls product write-protect features for BIOS ROM
•
Allows write-protection via software or permanent protection via controller logic
•
Supports write-protect jumper covering update of controller logic (override via ICT)
•
Total of 13 General purpose I/O lines
•
10 signals that can be programmed as inputs and outputs
•
Direction control in three groups with 2, 3 and 5 bits (20:21, 15:17, 10:14)
•
Two signals that are input-only
•
One signal that is output-only
•
Support for character-based LCD panel to display BIOS POST messages and other
information. Displays have an 8-bit parallel interface. Displayed text is the BIOS Port 80
codes in the format: “BIOS Code xx”
2.16
CMOS RAM and RTC
•
256 bytes of CMOS RAM
•
Lithium cell with >5 years operating life
2.17 Configuration
•
Majority of configuration is jumper-less and done through BIOS settings
•
Customer can specify BIOS defaults at manufacture
•
Operating mode jumper selects normal, configure and recovery modes
•
Power supply jumper configures the product to operate with a hard-switched power supply that
must be used when the PSU does not provide 5V on the 5V standby pin
•
Target: jumper-less operation for power supply type
2.18 BIOS
•
Based on Phoenix Award BIOS
•
4Mbit firmware hub BIOS ROM
•
System and (Intel) video BIOS
•
Intel Ethernet remote boot and PXE code
•
Fully customizable including video BIOS
•
ROM can be optionally socketed with write-protect support
•
Silent boot (boot message hiding, logo visible), headless operation support