Sun 4300 Address Decoding
The physical address and the byte in error are used to determine a failing
SIMM module. Socket locations are silkscreened on the component side of the CPU
and 3U Memory Boards, and on the solder side of the 9U Memory Board. This
section includes examples of errors and charts for the Sun 4300 CPU, 3U Memory
Boards and 9U Memory Boards.
Error Examples
- CPU Switch In NORM Position
- Parity Error detected on byte 0
- (Physical address 0x01000000) with PC 0xFFE90048
- Parity Error detected on byte 2
The location of the failing SIMM module is U1702.
- CPU Switch In DIAG Position
- error: at 0x000FFF8, expect 0x5A972C5a, obs 0x5AFE2C5 (looping)
- Physical Address: 0x010FFFF8
- (3U expansion memory) Expansion board #1 SIMM in Error: U0802
- (9U expansion memory) SIMM in Error: U1702
The location of the failing SIMM module is U1702.
-
Unexpected parity_memory_error at PC 0xffea1d4c.
- Memory Error Address Register: 0x000ffffc. Instruction: d2030000.
- Memory Error Control Register: 0x00000054.
- Physical address: 0x004ffffc.
- CPU board SIMM in Error: U1306
- error: at addr 0x000ffffc, expect 0x000ffffc, obs0x00000002.(looping)
- Physical address: 0x004ffffc.
The location of the failing SIMM module is U1306.
Sun-4300 CPU Board Memory Addressing
| ADDRESS (Dec)
|
ADDRESS (Hex) |
BANK |
BYTE |
SOCKET |
| 0-4MB |
000000-3fffff |
0 |
0 |
U1300 |
| 0-4MB |
000000-3fffff |
0 |
1 |
U1301 |
| 0-4MB |
000000-3fffff |
0 |
2 |
U1302 |
| 0-4MB |
000000-3fffff |
0 |
3 |
U1303 |
| 4-8MB |
000000-7fffff |
1 |
0 |
U1304 |
| 4-8MB |
000000-7fffff |
1 |
0 |
U1305 |
| 4-8MB |
000000-7fffff |
1 |
1 |
U1306 |
| 4-8MB |
000000-7fffff |
1 |
1 |
U1307 |
Sun 4300 Address Decoding
1st 3U Memory Board Addressing
| ADDRESS (Dec) |
ADDRESS (Hex) |
BANK |
BYTE |
SOCKET |
| 8-12MB |
800000-bfffff |
0 |
0 |
U1600 |
| 8-12MB |
800000-bfffff |
0 |
1 |
U1601 |
| 8-12MB |
800000-bfffff |
0 |
2 |
U1602 |
| 8-12MB |
800000-bfffff |
0 |
3 |
U1603 |
| 12-16MB |
c00000-ffffff |
1 |
0 |
U1604 |
| 12-16MB |
c00000-ffffff |
1 |
1 |
U1605 |
| 12-16MB |
c00000-ffffff |
1 |
2 |
U1606 |
| 12-16MB |
c00000-ffffff |
1 |
3 |
U1607 |
| 16-20MB |
1000000-13fffff |
2 |
0 |
U1700 |
| 16-20MB |
1000000-13fffff |
2 |
1 |
U1701 |
| 16-20MB |
1000000-13fffff |
2 |
2 |
U1702 |
| 16-20MB |
1000000-13fffff |
2 |
3 |
U1703 |
| 20-24MB |
1400000-17fffff |
3 |
0 |
U1704 |
| 20-24MB |
1400000-17fffff |
3 |
1 |
U1705 |
| 20-24MB |
1400000-17fffff |
3 |
2 |
U1706 |
| 20-24MB |
1400000-17fffff |
3 |
3 |
U1707 |
2nd 3U Memory Board Addressing
| ADDRESS (Dec) |
ADDRESS (Hex) |
BANK |
BYTE |
SOCKET |
| 24-28MB |
1800000-1bfffff |
0 |
0 |
U1600 |
| 24-28MB |
1800000-1bfffff |
0 |
1 |
U1601 |
| 24-28MB |
1800000-1bfffff |
0 |
2 |
U1602 |
| 24-28MB |
1800000-1bfffff |
0 |
3 |
U1603 |
| 28-32MB |
1c00000-1ffffff |
1 |
0 |
U1604 |
| 28-32MB |
1c00000-1ffffff |
1 |
1 |
U1605 |
| 28-32MB |
1c00000-1ffffff |
1 |
2 |
U1606 |
| 28-32MB |
1c00000-1ffffff |
1 |
3 |
U1607 |
| 32-36MB |
2000000-23fffff |
2 |
0 |
U1700 |
| 32-36MB |
2000000-23fffff |
2 |
1 |
U1701 |
| 32-36MB |
2000000-23fffff |
2 |
2 |
U1702 |
| 32-36MB |
2000000-23fffff |
2 |
3 |
U1703 |
| 36-40MB |
2400000-27fffff |
3 |
0 |
U1704 |
| 36-40MB |
2400000-27fffff |
3 |
1 |
U1705 |
| 36-40MB |
2400000-27fffff |
3 |
2 |
U1706 |
| 36-40MB |
2400000-27fffff |
3 |
3 |
U1707 |
1st 24 Mbytes of 9U Memory Board Addressing
| ADDRESS (Dec) |
ADDRESS (Hex) |
BANK |
BYTE |
SOCKET |
| 8-12MB |
800000-bfffff |
0L |
0 |
U1600 |
| 8-12MB |
800000-bfffff |
0L |
1 |
U1601 |
| 8-12MB |
800000-bfffff |
0L |
2 |
U1602 |
| 8-12MB |
800000-bfffff |
0L |
3 |
U1603 |
| 12-16MB |
c00000-ffffff |
0H |
0 |
U1604 |
| 12-16MB |
c00000-ffffff |
0H |
1 |
U1605 |
| 12-16MB |
c00000-ffffff |
0H |
2 |
U1606 |
| 12-16MB |
c00000-ffffff |
0H |
3 |
U1607 |
| 16-20MB |
1000000-13fffff |
1L |
0 |
U1700 |
| 16-20MB |
1000000-13fffff |
1L |
1 |
U1701 |
| 16-20MB |
1000000-13fffff |
1L |
2 |
U1702 |
| 16-20MB |
1000000-13fffff |
1L |
3 |
U1703 |
| 20-24MB |
1400000-17fffff |
1H |
0 |
U1704 |
| 20-24MB |
1400000-17fffff |
1H |
1 |
U1705 |
| 20-24MB |
1400000-17fffff |
1H |
2 |
U1706 |
| 20-24MB |
1400000-17fffff |
1H |
3 |
U1707 |
| 24-28MB |
1800000-1bfffff |
2L |
0 |
U1800 |
| 24-28MB |
1800000-1bfffff |
2L |
1 |
U1801 |
| 24-28MB |
1800000-1bfffff |
2L |
2 |
U1802 |
| 24-28MB |
1800000-1bfffff |
2L |
3 |
U1803 |
| 28-32MB |
1c00000-1ffffff |
2H |
0 |
U1804 |
| 28-32MB |
1c00000-1ffffff |
2H |
1 |
U1805 |
| 28-32MB |
1c00000-1ffffff |
2H |
2 |
U1806 |
| 28-32MB |
1c00000-1ffffff |
2H |
3 |
U1807 |
2nd 24 Mbytes of 9U Memory Board Addressing
| ADDRESS (Dec) |
ADDRESS (Hex) |
BANK |
BYTE |
SOCKET |
| 32-36MB |
2000000-23fffff |
3L |
0 |
U1900 |
| 32-36MB |
2000000-23fffff |
3L |
1 |
U1901 |
| 32-36MB |
2000000-23fffff |
3L |
2 |
U1902 |
| 32-36MB |
2000000-23fffff |
3L |
3 |
U1903 |
| 36-40MB |
2400000-27fffff |
3H |
0 |
U1904 |
| 36-40MB |
2400000-27fffff |
3H |
1 |
U1905 |
| 36-40MB |
2400000-27fffff |
3H |
2 |
U1906 |
| 36-40MB |
2400000-27fffff |
3H |
3 |
U1907 |
| 40-44MB |
2800000-2bfffff |
4L |
0 |
U2000 |
| 40-44MB |
2800000-2bfffff |
4L |
1 |
U2001 |
| 40-44MB |
2800000-2bfffff |
4L |
2 |
U2002 |
| 40-44MB |
2800000-2bfffff |
4L |
3 |
U2003 |
| 44-48MB |
2c00000-2ffffff |
4H |
0 |
U2004 |
| 44-48MB |
2c00000-2ffffff |
4H |
1 |
U2005 |
| 44-48MB |
2c00000-2ffffff |
4H |
2 |
U2006 |
| 44-48MB |
2c00000-2ffffff |
4H |
3 |
U2007 |
| 48-52MB |
3000000-33fffff |
5L |
0 |
U2100 |
| 48-52MB |
3000000-33fffff |
5L |
1 |
U2101 |
| 48-52MB |
3000000-33fffff |
5L |
2 |
U2102 |
| 48-52MB |
3000000-33fffff |
5L |
3 |
U2103 |
| 52-56MB |
3400000-1ffffff |
5H |
0 |
U2104 |
| 52-56MB |
3400000-1ffffff |
5H |
1 |
U2105 |
| 52-56MB |
3400000-1ffffff |
5H |
2 |
U2106 |
| 52-56MB |
3400000-1ffffff |
5H |
3 |
U2107 |
Last updated: December 2, 1996
|
