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DIGITAL-LOGIC AG MSEBX800/900 Detailed Manual V1.0
33
5.2. Interfaces
5.2.1. PS/2 Keyboard (AT Compatible) and PS/2 Mouse
X31 Keyboard
Pin Signal Pin Signal
1 KB_Data 2 -
3 GND 5 +5Volt / 100mA
6 KB_Clk 8 -
X32 Mouse
Pin Signal Pin Signal
1 MB_Data 2 -
3 GND 5 +5Volt / 100mA
6 MB_Clk 8 -
5.2.2. Line Printer Port LPT1
A standard bi-directional LPT port is integrated into the MICROSPACE PC.
Further information about these signals is available in numerous publications, including the IBM technical
reference manuals for the PC and AT computers and from other reference documents.
The current is: IOH = 12mA IOL = 24mA
The SMC 37C672 may be programmed via software commands.
In the new BIOS version, this selection may be controlled with the BIOS setup screen.
5.2.3. Serial Ports COM1 - COM2
The serial channels are fully compatible with 16C550 UARTS.
X30B / X39 Serial Port Connectors COM1, COM2
Pin Signal Name
Function in/out DB25 Pin DB9 Pin
1 CD Data Carrier Detect in 8 1
2 RXD Data Receive Data in 6 6
3 TXD Transmit Data out 3 2
4 DTR Data Terminal Ready out 4 7
5 GND System Ground - 2 3
6 DSR Data Set Ready In 5 8
7 RTS Request to Send out 20 4
8 CTS Clear to Send in 22 9
9 RI Ring Indicator in 7 5