Dennis, please quit bothering me!

84h7085.exe    PC Server 720 reference diskette version 1.12
720pci.exe    720PCI PC Server 720 PCI Configuration Diskette
4227103.exe   PC Server 720 diagnostic diskette version 1.13
4305348.exe   PC Server 720 BIOS flash update level 14 ver 1.10
4305348a.txt   README file for  BIOS flash update level 14 ver 1.10

BIOS 10 and diags 1.12 and later properly reset memory cache after testing.

Status LEDs
Green = proper operation  Yellow = alert condition

LED#	Definition
1	Hard disk drive activity
2	DASD error
3	Processor Complex Error
4	Color green (POWER GOOD)
5	Color green (POWER Enabled)
6	Color green (All subsystems good)

Error Codes
Corollary Errors (CP,TP,EP,IP,FP,HALT)
PCI Errors  (DDDD DD S 0 VVVV IIII) 
General Errors

Liquid Crystal Display 
  The Liquid Crystal Display (LCD) on the front operator panel contains a 2-line by 16-character LCD (front panel display) driven by the 80C752 microprocessor. The front panel display receives and transmits ASCII characters. The LCD supports the upper-and lower-case ASCII character set.
   Errors detected by the computer might be displayed on the LCD and/or on the standard display attached to the computer. This is helpful when a display is not attached to the computer or the attached display is inoperative. 

LEDs - System Board and Adapter 
   LED(s) are located on planar, bridge, processor, and memory card. 

Component	LED On	LED Off
Planar Slot LEDs: B1 (bridge card slot)	During / after normal initialization of bridge card	-SW problem preventing initialization of card  -Defective LED  -Defective bridge card
M1  (memory card slot)	During initialization of memory card	Successful initialization of memory card complete
M2/P1 (w/ memory card installed)	During initialization of memory card	Successful initialization of memory card complete
M2/P1 (w/ processor card installed)	During initialization and activity on processor card	- No activity on processor  - SW problem preventing initialization of card  - Defective LED  - Defective processor card
P2 thru P6  (with processor card installed)	During initialization and activity on  processor card	-No activity on processor  - SW problem preventing initialization of card  - Defective LED - Defective processor card
Micro Channel slots	When computer is powered-off	When computer is powered-on
Bridge card LED	During / after normal initialization of bridge card	- SW problem preventing initialization of card  - Defective LED  - Defective bridge card
Memory card LED(s)	During initialization of memory card	Successful initialization of memory card complete
Processor card LED(s)	During initialization and activity on processor card	-No activity on processor -SW problem preventing initialization of card  -Defective LED  -Defective processor card

I²C (Inter-Integrated Circuit)
   The I²C (Inter-Integrated Circuit) bus is a serial bus that is used in the PC Server 720 to monitor and control several peripheral functions within the machine. The bus is driven through a VLSI module on the system board. A service processor on the system board (based on the Intel 83C552 micro-controller) controls and monitors these functions within the machine through the I¥C bus. These include: 

      The front panel LCD 
      The front panel power controls 
      Detecting the setting of the SCSI ID jumper on the hot-swap backplanes 
      Reading the voltage and temperature sensors on the planar (these can be viewed by the operator using NetFinity) 
      Controlling the three fans mounted behind the drive bays