Hayes Microcomputer Products Mwave 用户手册

The following sections list solutions to possible problems you may experience.

In order to recognize memory above 64 Meg, it may be necessary to append the "mem=" option to the kernel
command line.  If you are using LILO for your boot loader, you would do this in the 

lilo.conf

 file.  For

example, if you had a machine with 128 Meg you would type:

append="mem=130496K"

Your statement must reflect 576K less than you actually
have. Specifying the full amount of memory will prevent
the DSP from starting.  In the above  example, the formula
used to arrive at the proper number was 1024 * nMB −
576 = nK.

If you forget to run the Thinkpad" utility to enable the ACP  Modem and you didn't specify any command line
arguments when  inserting the mwave module (or it didn't work), you will receive a message in the syslog,
similar to the one below:

ACP Modem, UART settings IRQ 0x3        IO 0x2f8

tp3780::EnableDSP, pSettings−>bDSPEnabled 0 failed

Mwave Modem, ERROR cannot Enable DSP error fffffffb

Mwave Modem, ERROR cannot perform Mwave Initialization retval fffffffb

If you receive a message like the one above, check the command line arguments you provided  to insmod.

The ACP Modem requires the use of system resources for both  the DSP and the UART provided by the ACP
chip. For Linux systems, you will specify parameters  to use for the duration of the boot with the  insmod
mwave command line parameters listed in 

.

Typically the configured resources are:

For the DSP:  IRQ 10, I/O address 0x130−0x13f

For the UART: IRQ 3,  I/O address 0x2f8 (if using ttyS1)

3. Resolving Installation and Configuration Problems

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