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Pin
Assignments
1
Data out
2
Key
3
Ground
4
VCC
J11: Keyboard Lock Connector
- 5 pin single-in-line BERG. This allows the user
to lock-out the keyboard, protecting the system from unauthorized use. This
connector is keyed with a blank hole.
Pin Assignments
1
LED power
2
Key
3
Ground
4
Keyboard Inhibit
5
Ground
J14: TURBO LED Connector
- 2 pin single-in-line BERG. The LED will be lit when
board is running at "hi" speed.
Pin
Assignment
1
Clock speed
2
LED power
J17: Factory Testing Jumper
- 2 pin single-in-line BERG.
Do not use
, for
factory testing of certain board functions.
J18: Turbo Switch Connector
- 2 pin single-in-line BERG. When the button is
pressed, the system will switch to hi or lo CPU speed.
Pin
Assignments
1
Ground
2
Mode switch
J19: Reset Button Connector
- 2 pin single-in-line BERG. When the button is
pressed, the system will perform a hard reset.
Pin
Assignments
1
Hard reset
2
Ground
J26:EPROM Type Selection Jumper
- 3 pin single-in-line BERG. Use to select type
of EPROM as follows:
Pin
Type EPROM
1-2
64 or 128 (8Kx8. ie;2764)
2-3
256 (32Kx8. ie;27256)
Содержание AMI 386SX
Страница 7: ...AMI 386SX S10C USER MANUAL This manual edited and designed by James C Helman Release date May 14 1990 ...
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