Using The Sm56 Modem - Motorola SM56 Quick Start User Manual

Duplicated device: vcd
To remove the error, edit the SYSTEM.INI file and locate the line that reads:
Device = *vcd
Delete this line. Save the modified SYSTEM.INI file and restart Windows 98. You will no longer
get the error message.
9

Using the SM56 Modem

32-Bit Windows 95/98 Applications
Because 32-bit Windows 95/98 applications use TAPI for communicating with modems, using the
SM56 is as easy as selecting the SM56 modem by name from the list of available modems.
16-Bit Windows 95/98 Applications
Because 16-bit applications cannot use the TAPI interface, there is a bit more setup needed.
1. Select Motorola SM56 modem from the list of supported modems (if the SM56 modem is
not shown, select Hayes Compatible modem).
2. Configure the application's COM port selection. Use the COM port assigned to the SM56
modem.
3. If the application requires it, enter specific AT commands for the SM56 modem. (For a
full list of AT commands, refer to the SM56 on-line User's Guide). Some typical AT
commands are listed below.
DOS-Based Applications and Games
Important: The SM56 PCI modem does not include direct DOS box support. Please refer to the
Troubleshooting sections for information on a way to get around this limitation.
The SM56 ISA modem can be used in DOS only through a Windows 95/98 DOS box.
DOS support is achieved by virtualizing the standard I/O and IRQ assigned to a COM port. This
means that the SM56 drivers capture and redirect all I/O to/from the standard I/O address for the
COM port to which it assigned. In simpler terms, you tell the application the COM port of the
SM56, and then use all the standard I/O and IRQ settings. Standard I/O addresses and IRQs for
COM Ports 1-4 are as follows:
COM Port
1
IO Address
3F8
IRQ
4