HP Armada 7800 Appendix page 8

Status Read Of Security Features Involving Peripherals
The configuration bytes located at RTC memory address 26h and 29h contains the
control bits for the serial and parallel interfaces as well as the fixed disk and diskette
drive controllers as shown below:
RTC Configuration Byte 26h
BIT FUNCTION
7..1 Reserved - DO NOT CHANGE *
0 Diskette controller
0 = Disabled
1 = Enabled
* Refer to Chapter 3 - Processor/Cache and System Support under Real Time Clock and Configuration Memory
C-8 Security Features
RTC Configuration Byte 29h,
I/O Port Address 0C65h
BIT FUNCTION
7 Reserved - DO NOT CHANGE *
6,5 Parallel interface
00 = Primary
01 = Secondary
10 = Tertiary
11 = Disabled
4 Fixed disk drive controller
0 = Disabled
1 = Enabled
3 Reserved - DO NOT CHANGE *
2 Reserved - DO NOT CHANGE *
1 Serial interface
0 = Disabled
1 = Enabled
0 Reserved - DO NOT CHANGE *