| 
 
 Sun Blade 2500 / SX2500
| 375-3105 | 375-3044 | 375-3096 |  
| w/o Memory w/o SB2500 Tray
 w/o USIIIi
 | 0MB FRU w SB2500 Tray
 1× 1.28GHz USIIIi
 Option 9005
 | 0MB FRU w SB2500 Tray
 2× 1.28GHz USIIIi
 Option 9006
 |   
 PCI Slot Numbering
Master PCI Bus 2A shares the address/data bus with ATA-100,
| SLOT | BUS | DEVICE TREE |  
| 5 | 2B | pci@1f,70000/*@2,* |  
| 4 | 2A | pci@1e,60000/*@2,* |  
| 3 | 1A | pci@1c,60000/*@2,* |  
| 2 | 1B | pci@1d,70000/*@2,* |  
| 1 | 2A | pci@1e,60000/*@3,* |  
| 0 | 2A | pci@1e,60000/*@4,* |  Audio, Flash, I2C, NVRAM, Parallel, Serial, and USB devices.
 Slave PCI Bus 1A shares the address/data bus with the Ethernet controller.
 Slave PCI Bus 1B shares the address/data bus with the SCSI controller.
 Jumper Settings
| JUMPER | PINS | SETTING | DESCRIPTION |  
| J9 | 1-8 | Out | Test Header |  
| J10 | 1-3 | Out | Reset Header |  
| J11 | 1-46 | n/a | X86 Debug Header |  
| J12 | 1-8 | Out | JTAG Header |  
| J14 | 50 | n/a | Unused 50-Pin Header |  
| J16 | 3 | n/a | Speaker Header |  
| J19 | 3 | n/a | Glow Logo Header (not used) |  
| JP1 | 1-2 7-8
 9-10
 | In In
 In
 | CPU1 1.4V Core VID[4:0] Bit 0 (00110) CPU1 1.4V Core VID[4:0] Bit 3 (00110)
 CPU1 1.4V Core VID[4:0] Bit 4 (00110)
 |  
| JP2 | 1-2 7-8
 9-10
 | In In
 In
 | CPU0 1.4V Core VID[4:0] Bit 0 (00110) CPU0 1.4V Core VID[4:0] Bit 3 (00110)
 CPU0 1.4V Core VID[4:0] Bit 4 (00110)
 |  
| JP3 | 1-2 3-4
 5-6
 | Out In
 Out
 | 1.280GHz CONFIG[2:0] Bit 0 (101) 1.280GHz CONFIG[2:0] Bit 1 (101)
 1.280GHz CONFIG[2:0] Bit 2 (101)
 |  
| JP4 | 1-8 | Out | Unknown |  
| JP5 | 1-2 1-2
 | In Out
 | FPROM low half booting (default) FPROM high half booting (flash recovery)
 |  
| JP6 | 1-2 | Out | Clear CMOS when installed |  
| JP7 | 1-2 1-2
 | In Out
 | FPROM write enabled (default) FPROM write protected
 |  
 
| Sun Blade 2500 Codename: Enchilada |  Notes
The minimum operating system is Solaris 8 5/03. 
The Sun Blade 2500 serial number and factory configuration label is
    located on the upper left side of the front bezel and on the rear of
    the chassis. 
The SX2500 does not have a system serial number.
 Memory Notes
The minimum memory is two CPU0 DIMMs.
CPU1 does not require memory in slots DIMM 4/5 or 6/7.
At least two CPU1 DIMMs are recommended if CPU1 is installed.
The memory installation sequence is Bank 2 then Bank 0.
Bank, Rank, DIMM, and XOR Interleaving is supported.
Only CPU 0 DIMMs are accessible in a single CPU system (CPU 0). 
Memory is mapped globally and is accessible by either CPU in a dual-CPU
    system.
UltraSPARC IIIi supports single bank and dual bank DDR-1 SDRAM DIMMs.
Two DIMMs of the same bank size (single or dual) and memory size
    form a bank.
Memory error reporting identifies a failing Bank, not a single failing DIMM.
 References
 Sun Blade 2500 Service, Diagnostics, and Troubleshooting Manual, 816-0996. Sun Blade 2500 Product Notes, 816-1001. Sun Blade 2500 Getting Started, 816-1005. Sun Blade 2500 Troubleshooting Card, 816-1006. 
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