TurboScan Interface Card - Revision C               AST Part Number 240010-001
for the 300A Series Scanner

The TurboScan interface card is the route through which data is passed back
and forth between the TurboScan and the PC.  An I/O address must be selected
for the data path.  Check your manuals for other cards in your system if you
dont know whether or not the TurboScan default address of 100 hex is already
used.  If that address is already used, you will need to change the default
switch settings of switches 1 through 8 on the switch bank on the Parallel
interface card to set a different I/O address for the TurboScan.

The TurboScan interface also provides DMA (Direct Memory Access) using channel
1. If another device also uses DMA channel 1, the TurboScan is designed to
prevent conflicts with any other device that has the ability to share the DMA
channel. If another device cannot share the channel, you must disable the DMA
feature by selecting the "Image Transmission Speed" as "Fixed" in the Eyestar
Plus Configuration Program.  This file describes the default configuration of
the TurboScan Interface Card and how to change that configuration if
necessary.


BASE I/O ADDRESS SWITCH SETTINGS

    +---------+-----+-----+-----+-----+-----+-----+-----+-----+
    | ADDRESS |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |
    +---------+-----+-----+-----+-----+-----+-----+-----+-----+
    |  0100h  |  ON | OFF |  ON |  ON |  ON |  ON |  ON |  ON |
    |  0200h  | OFF |  ON |  ON |  ON |  ON |  ON |  ON |  ON |
    |  0220h  | OFF |  ON |  ON |  ON | OFF |  ON |  ON |  ON |
    +---------+-----+-----+-----+-----+-----+-----+-----+-----+


SWITCH BLOCK\CABLE CONNECTION

    ͻ
    +----------+                      
    | 12345678 |<---SWITCHES (SW1)   Ķ
    +----------+                      
                               +----- 
                               |      
                               |      
                DB25P -------> |      
              CONNECTION       |      
                               |      
                               +-----Ķ
    ͻ            ͼ 
                    ͼ      
                                        
