Laser Printer Controller (LPC)                      AST Part Number 202093-003

The Turbolaser/EL controller board controls the operation of the Laser
Printer.  Besides containing the "Brains" of the printer (Motorola 68000 CPU
Chip), the LPC also houses the memory where languages, emulations, and fonts
are stored.

There are several configuration options available for the LPC board. The LPC
can respond as either a parallel port (LPT1, LPT2, LPT3), or as a serial port
(COM1 or COM2).  It can also be configured to respond as both a parallel port
and a serial port at the same time if necessary in your application.


SERIAL PORT JUMPER CONFIGURATION

    +--------------------+-----+-----+-----+-----+
    | PORT (I/O ADDRESS) |  1  |  2  |  3  |  4  |
    +--------------------+-----+-----+-----+-----+
    |           DISABLED | OFF | OFF | N/A | N/A |
    |       COM 1 (03F8) | OFF | ON  | N/A | N/A |
    |       COM 2 (02F8) | ON  | OFF | N/A | N/A |
    +--------------------+-----+-----+-----+-----+

    * NOTE; The Laser Printer Controller (LPC) can be configured
            for both LPT #  and COM # at the same time.


PARALLEL PORT JUMPER CONFIGURATION

    +--------------------+-----+-----+-----+-----+
    | PORT (I/O ADDRESS) |  1  |  2  |  3  |  4  |
    +--------------------+-----+-----+-----+-----+
    |           DISABLED | N/A | N/A | OFF | OFF |
    |        LPT 1 (3BC) | N/A | N/A | ON  | ON  |
    |        LPT 2 (378) | N/A | N/A | OFF | ON  |
    |        LPT 3 (278) | N/A | N/A | ON  | OFF |
    +--------------------+-----+-----+-----+-----+


IRQ 7 ENABLE JUMPER

    +--------------------+-----------------+
    |  JUMPER INSTALLED  | IRQ7 ENABLED    |
    |  JUMPER REMOVED    | IRQ7 DISABLED   |
    +--------------------+-----------------+


JUMPER LOCATIONS

    ͻ
                                                                    
                                                                   Ķ
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
              PORT CONFIGURATION JUMPERS (1-4)---> ****             
                                  IRQ7 JUMPER ---> **              Ķ
    ͻ            ͼ 
                                                  ͼ      
                                                                      
