10
SBC-400 User's Manual
Jumpers and connectors
Connectors on the board link it to external devices such as hard
disk drives, a keyboard or floppy drives. In addition, the board has
a number of jumpers that allow you to configure your system to
suit your application.
The table below lists the function of each of the board jumpers and
connectors.
Jumpers and connectors
Label
Function
JP1
Cache memory select
JP2,3,4
CPU type select
JP5,6
CPU Vcc select
JP7,8
CPU clock select
JP9
Serial port IRQ select
JP10
Parallel port DRQ select
JP11
Parallel port DACK select
JP12
Power LED and keylock
JP13
External speaker
JP14
Reset switch
JP15
Turbo LED
JP17
Turbo switch
JP23,39
RS-232/422/485 select
JP38
Watchdog timer time-out signal select
CN1
Enhanced IDE connector
CN2
FDD connector
CN3
Parallel connector
CN4
Power connector
CN5,6
PC/104 module connectors
CN7
External keyboard connector
J1
Keyboard and/or PS/2 mouse connector
COMA
Serial port 1
COMB
Serial port 2
Содержание SBC-400
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