Xycom XVME-976/202, Manual

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Chapter 2 – SSP Installation (XVME-956/400)
2-3
Jumper Settings
This section describes how to set the jumpers on the SSP board.
On a 14-pin jumper group, notations such as "1/2" or "7/8" will be used to
indicate that you should install a shorting block or wire between pins 1 and
2 or between pins 7 and 8.
On a 3-pin jumper group, the jumper should always be between pins 1 and 2
("1/2") or between pins 2 and 3 ("2/3").
On a 2-pin jumper group, the jumper will be either present or absent. The
notation "short" will indicate that you should install a jumper between pins
1 and 2, while "open" will indicate that you should leave it out.
Base I/O Address Selection
Each port on the board can be assigned a base address at any eight-byte
boundary in the PC I/O address space. The address you select, however,
must be unique (not the same as that of any other I/O port). For convenient
reference, Table 2-4 lists some commonly used I/O port address assign-
ments.
Table 2-4. Common I/O Port Addresses
Port Base Address (Hex)
LPT1
LPT2
COM1
COM2
COM3
COM4 0378h
0278h
03F8h
02F8h
03E8h
02E8h
Selecting the SSP I/O base address is a two step process. First, choose the
appropriate jumper groups via Table 2-5. Second, use Table 2-6 to configure
the I/O port address.
Table 2-5. I/O Address Jumper Groups
Connector Port Jumper Group
J1
J2
J3 RS-232C serial port COM A
Optional serial port COM B
Parallel port W1
W2
W3