USPIIi-1v Hardware Manual
3-2
Themis Computer
The local I/O subsystem is PCI based, with separate PCI channels provided for I/O functions and external
VMEbus backplane access. SCSI ports A and B, Ethernet A, Console Port and PS/2 Keyboard/Mouse
connections are provided on the front panel of the baseboard.
The back panel VMEbus interface provides signals for UltraWide SCSI A, Ethernet A MII, and Serial Port B.
Additional signals are provided for System, Alarm, Warning, and RESET.
3.1.2
I/O Board and Creator Graphics
The USPIIi-1v I/O Board occupies the second slot and provides front panel access to RS-232/422 Serial Ports
C and D, Sun Keyboard/mouse, Bidirectional IEEE1284 Parallel Port, RJ-45 10/100-BaseT Ethernet B, and
Audio Line-In and Line-out. Also, rear access is provided on the P2 connector for Ethernet B MII, SCSI B
and Serial ports C or D.
3.1.3
PMC Carrier Board
A PMC Carrier Board is available for vendor specific, 32-bit, 33 MHz, PMC expansion boards. Up to three
(3) PMC expansion cards are supported.
The User I/O on the PMC Carrier Board may be configured. Either 64 bits of User I/O may be made available
on PMC #1, while the User I/O on PMC #2 is not used. Or, 32 bits of User I/O may be made available on
both PMC #1 and PMC #2.
3.1.4
Paddle Board
A single slot, P2 paddle board is available for the USPIIi-1v baseboard and for the USPIIi-1v I/O board. The
same paddle board design used for the baseboard is used for the I/O board.
When used in conjunction with the baseboard, the paddle board provides the user with connections for MII A,
Serial B, and SCSI A. When used in conjunction with the I/O Board, the paddle board provides connections
for Serial port C or D, MII B and SCSI B.
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