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J1: Keyboard Connector
- 5 pin DIN socket. Connect an IBM AT compatible
keyboard.
Pin
Assignments
1
Keyboard clock
2
Keyboard data
3
Not used
4
Ground
5
VCC
J2: Keyboard Reset Disable Jumper
- 2 pin single-in-line BERG. When jumpered
normal operation of soft reset is enabled, if opened the keyboard reset is
disabled.
J5: Battery Connector
- 4 pin single-in-line BERG. This is an optional
connector You may connect a 6 Volt Battery pack to this connector. This
allows the Real Time Clock (RTC) and CMOS memory to retain its contents during
power off.
CAUTION
Ensure that the positive (+) terminal, normally indicated by a red wire, is
connected to the pin marked "+" on J5.
Pin Assignments
1
6V dc
2
Not used
3
Not used
4
Ground
NOTE
There is a factory installed Lithium battery holder on your motherboard, part
number is Duracell DL2016. It is highly recommended you use only one battery
configuration.
J8 and J9: Memory Speed Selection Jumpers
- 2, 3 pin single-in-line BERG
connectors. Use to select operating speed of DRAM as follows:
J8
J9
Speed of DRAM
1-2
1-2
100 ns Fast Page Mode DRAM
2-3
1-2
Other 100 ns DRAM
2-3
2-3
120 ns DRAM
J10: Audio Connector
- 4 pin single-in-line BERG. This is an optional
connector, there is a factory installed piezo speaker on the motherboard.
Содержание AMI 386SX
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