IBM 560E manual Cmos RAM Configuration, Byte Hex 00E, Status Byte Hex

CMOS RAM Configuration

Figure 2-20 shows the bit definitions for the CMOS RAM configuration bytes.

Diagnostic Status	Byte (Hex 00E)
Bit	Function
7	Real-time clock power
6	Configuration record and checksum status

5Incorrect configuration

4Memory size mismatch

3	Hard	disk	controller/drive C initialization status
2	Time	status	indicator
1, 0	Reserved

Figure

2-20. Diagnostic Status Byte (Hex 00E)

Bit

7

When

set

to

1,

this

bit

indicates

that

the

real-time

clock

has

lost

power.

Bit

6

When set to 1, this bit indicates that the checksum is

incorrect.

Bit

5

This

bit

indicates the results of a power-on check of the

equipment byte (hex 014). When set to 1, this bit

indicates

that

the configuration information is incorrect.

Bit

4

When

set

to

1,

this

bit

indicates

that

the

memory

size

does

not

match

the

configuration information.

Bit

3

When

set

to

1,

this bit indicates that the

controller

or hard

disk

drive failed

initialization.

Bit

2

When

set

to

1,

this

bit

indicates

that

the

time

is

invalid.

Bits

1, These0

bits are reserved.

Shutdown

Status

Byte

(Hex

00F):

This byte is defined by the

power-on diagnostic

programs.

2-22ThinkPad 560/560E System Board