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Last updated: November 26, 1999


Enterprise 250

A26

501-4681
0MB FRU

Jumper Settings

JUMPER PINS SETTING DESCRIPTION
J0103 1-2
2-3
Out
In
Include CPU0 in scan chain
Bypass CPU0 in scan chain (Default)
J0104 1-2
2-3
Out
In
UPA_REQ_SPARE High
UPA_REQ_SPARE Low (Default)
J2604 1-2
2-3
In
In
RS-232
RS-423 (Default)
J2605 1-2
2-3
iIn
In
RS-232
RS-423 (Default)
J2702 1-2
2-3
In
Out
Select Flash PROM (Default)
Select ROMBO
J2704 1-2
2-3
Out
In
FPROM write protect
FPROM write enable (Default)
J2804 1-2
2-3
Out
In
FPROM flash recovery mode
FPROM normal mode (Default)
J3001 1-2
2-3
In
In
÷3 mode (250MHz/300MHz)
÷2 mode (200MHz) ÷4 mode (400MHz)
J3303 1-2
2-3
Out
In
Include CPU1 in scan chain
Bypass CPU1 in scan chain (Default)
J4101 1-2
2-3
Out
In
Include UCM in scan chain
Bypass UCM in scan chain (Default)
J4402 1-2
2-3
In
Out
Select RSC Flash PROM (Default)
Select ROMBO
S4101 1-2 Out Unknown function of MPC823 (Default)
S4301 1-2 Out RSC PBRST (Default)

PCI Slot Numbering

SLOT BUS DEVICE TREE
3 A pci@1f,2000/*@1,*
2 B pci@1f,4000/*@2,*
1 B pci@1f,4000/*@4,*
0 B pci@1f,4000/*@5,*

PCI Bus B shares the address/data bus with onboard Audio, Ethernet, Flash, Floppy, Keyboard, Mouse, NVRAM, Parallel, SCSI, and Serial devices.


Enterprise 250

A26

501-5440
0MB FRU

Jumper Settings

JUMPER PINS SETTING DESCRIPTION
J0103 1-2
2-3
Out
In
Include CPU0 in scan chain
Bypass CPU0 in scan chain (Default)
J0104 1-2
2-3
Out
In
UPA_REQ_SPARE High
UPA_REQ_SPARE Low (Default)
J2604 1-2
2-3
In
In
RS-232
RS-423 (Default)
J2605 1-2
2-3
iIn
In
RS-232
RS-423 (Default)
J2702 1-2
2-3
In
Out
Select Flash PROM (Default)
Select ROMBO
J2704 1-2
2-3
Out
In
FPROM write protect
FPROM write enable (Default)
J2804 1-2
2-3
Out
In
FPROM flash recovery mode
FPROM normal mode (Default)
J3001 1-2
2-3
In
In
÷3 mode (250MHz/300MHz)
÷2 (200MHz) ÷4 (400MHz) ÷5 (tbd)
J3002 1-2
2-3
In
In
÷2 mode, ÷3 mode, ÷4 mode
÷5 mode
J3303 1-2
2-3
Out
In
Include CPU1 in scan chain
Bypass CPU1 in scan chain (Default)
J4101 1-2
2-3
Out
In
Include UCM in scan chain
Bypass UCM in scan chain (Default)
J4402 1-2
2-3
In
Out
Select RSC Flash PROM (Default)
Select ROMBO
S4101 1-2 Out Unknown function of MPC823 (Default)
S4301 1-2 Out RSC PBRST (Default)

PCI Slot Numbering

SLOT BUS DEVICE TREE
3 A pci@1f,2000/*@1,*
2 B pci@1f,4000/*@2,*
1 B pci@1f,4000/*@4,*
0 B pci@1f,4000/*@5,*

PCI Bus B shares the address/data bus with onboard Audio, Ethernet, Flash, Floppy, Keyboard, Mouse, NVRAM, Parallel, SCSI, and Serial devices.


Miscellaneous Connectors

CONNECTOR PINS DESCRIPTION
J1902 1-50 Not used
J2303 1-8 Ethernet test (factory use)
J2601 1-8 Serial test (factory use)
J2801 1-3 Button XIR (1-2) and POR (2-3)
J2803 1-8 JSCC (factory use)
J2901 1-16 Sense Cable to Power Distribution Board
J2902 1-4 DC Power to Power Distribution Board
J2903 1-6 DC Power to Power Distribution Board
J2905 1-5 LED and Speaker (not used)
J3504 1-4 On/Off Switch (not used)
J4201 1-20 UCM Flex Cable
J4401 1-60 Not used
J4501 1-14 Sense Cable to Power Distribution Board

Notes

  1. The minimum operating system is 2.5.1 HW: 11/97 or 2.6 HW: 5/98.
  2. Solaris 2.5.1 HW: 11/97 requires Enterprise 250 extensions.
  3. The flash PROM is soldered to the system board.
  4. Use the Flash PROM Programming Utility to update the flash PROM.
  5. Disconnect all system board power cables before removing or installing the NVRAM. Failure to remove power can result in NVRAM corruption.
  6. Synchronous communication BugID 4162312 is fixed on 501-4681-06.

SCSI Bus Notes

  1. The internal SCSI bus is controlled by /pci@1f,4000/scsi@3.
  2. The external SCSI bus is controlled by /pci@1f,4000/scsi@3,1.
  3. RMA Tray SCSI cable <=530-2445-02 does not terminate the bus.
  4. Enable termination on the last device with SCSI cable <=530-2445-02.

Memory Notes

  1. The minimum requirement is four DIMMs in any bank.
  2. DIMMs can be installed in any order of banks.
  3. Each bank addresses 512MB of memory.

Reference

  1. Enterprise 250 Owners Guide, 805-5160.Internet Link
  2. Enterprise 250 ShowMe How, 724-2794.
  3. Flash PROM Programming Guide, 802-3233.Internet Link

Rear View



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