IBM 6580 User Manual

Message Number
... ------- (I ndicates the system
has entered RNA)
.- ____ Current Test Number
Error Code
(May be
more than one error code)
I
t
*801 * xx xx xx xx xx
Figure 9-5. BAT Display Format
When the BAT will not complete because
of an error, the system will be placed
in the Resident Non-Automatic Diagnos-
tics mode. The Resident Non-Automatic
Diagnostics will permit further diag-
nosis through the use of the keyboard
or the Memory Record Button (located
on the electronics module panel 1).
These diagnostics are· used with hard
copy MAPS.
Error
Display·
LED
LEOs Failure
Description of Test
0
EFGH
Codes
Power
On Reset (POR)
1 XXXX*
N/A
Processor & ROS CRC Tests
1
XXXX
N/A
Local I/O Bus Wrap Test
1
XXX X
N/A
Timer Test
0 1111
N/A
I nterrupt Controller Test
0
1111
N/A
Memory
Record Switch Latch Test
0
1111
N/A
Keyboard Adapter Test
0 1111
N/A
Mini-RAM
0
0010**
N/A
0
0011**
N/A
Parity Generator/Checker
0 0001
N/A
Base RAM Test
0 1110
N/A
Processor Extension Test
0 0011
N/A
Display RAM Test
0
0100
N/A
Display Adapter Timing
0 0101
N/A
Display Adapter Video Test
0 0101
N/A
Keyboard Cable Test
0 0110
01
Physical Keyboard Test
0 0110
02
DMA Controller Test
0
0111***
03
Diskette Module Wrap Test
0
1000
04
Diskette Adapter Test
0 1000
05
Extra RAM Test
0
1001****
N/A
Bus Time-Out Test
0 1010
08
RAM Addressability Test
0
1100
09
*
The XXXX pattern means an unknown state of the
LEOs.
**
***
****
Figure
The test will fail with 0010 in error LEOs if there is
a bad Memory Card or 0011 in the LEDs if there is
a bad System Card.
A
short tone (less than one second) is generated.
This occurs at the start of the Direct Memory
Access (DMA) test. During this test, a failure could
cause the processor to lose control of the system.
If the DMA test fails, a continuous tone is gener-
ated. When this occurs, the LED pattern and dis-
played
error list may not be accurate. In this event,
the information displayed by the LEOs and/or the
display may not be correct.
An extra RAM Test will not display a failing code.
This will allow a degraded mode of operation. It is
Test Number 06.
9-6. BAT Progress/Error Codes
9-6 IBM Displaywriter Product Support Manual

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English