How to Configure Non-Intelligent Digiboard PC/8 Adapters

MORE INFORMATION

There are nine switch blocks on the Digiboard PC/8 adapter. Listed below are the switch block settings of the adapter and Registry settings for each communications port of the adapter.

Switch Block Settings

Switch Block One (DS1) is used to configure the adapter's Interrupt Status Register address.

Switches       Description
------------------------------------------------------------------
Switches 1-7   Adapter I/O port address
Switches 8-9   Set these to the ON position
Switch 10      Enables (ON position) the Interrupt Status Register
				

The remaining eight switch blocks are used to configured the I/O port addresses for each communications port of the adapter. Switch 8 on each of these blocks enables (ON position) the port. The I/O port addresses available range from 000H to 3F8H.

Registry Settings

1. Start REGEDT32.EXE and locate the following Registry subkey:
   

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet \Services\Serial\Parameters

2. Listed below are entries that need to be manually added to be able to use the ports on the Digiboard PC/8 adapter. To add a key for each entry, choose Add Key from the Edit menu. Enter "Serial3" (without the quotation marks) for COM3 on the entry for Key Name. Leave the Class entry blank, and then choose OK.
   
   To enter each value, choose Add Value from the Edit menu. Enter values of the following:
   
   

         Serial3
         -------
         DosDevices : REG_SZ : COM3
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x100
         PortIndex : REG_DWORD : 0x1
   
         Serial4
         -------
         DosDevices : REG_SZ : COM4
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x108
         PortIndex : REG_DWORD : 0x2
   
         Serial5
         -------
         DosDevices : REG_SZ : COM5
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x110
         PortIndex : REG_DWORD : 0x3
   
         Serial6
         -------
         DosDevices : REG_SZ : COM6
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x118
         PortIndex : REG_DWORD : 0x4
   
         Serial7
         -------
         DosDevices : REG_SZ : COM7
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x120
         PortIndex : REG_DWORD : 0x5
   
         Serial8
         -------
         DosDevices : REG_SZ : COM8
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x128
         PortIndex : REG_DWORD : 0x6
   
         Serial9
         -------
         DosDevices : REG_SZ : COM9
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x130
         PortIndex : REG_DWORD : 0x7
   
         Serial10
         --------
         DosDevices : REG_SZ : COM10
         ForceFifoEnable : REG_DWORD : 0x1
         Indexed: REG_DWORD : 0x1
         Interrupt : REG_DWORD : 0x5
         InterruptStatus : REG_DWORD : 0x140
         PortAddress : REG_DWORD : 0x138
         PortIndex : REG_DWORD : 0x8

3. When complete, quit REGEDT32.
4. Quit Windows NT and turn off your computer.
5. Restart your computer and Windows NT.

COM1 through COM9 can be directly referenced just like a filename from programs and from the command line. However, COM10 must be referenced with the following syntax:

   \\.\COM10
				

NOTE: The command line MODE command does not recognize ports above COM9.

The products included here are manufactured by Digiboard, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.