The following sections list solutions to possible problems you may experience.
append="mem=130496K" |
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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. |
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 |
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 Section 2.4.1.
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) IRQ 4, I/O address 0x3f8 (if using ttyS0) |
For dual boot systems we recommeded that you use the Thinkpad™ Configuration Utility on Windows NT or DOS to configure these system resources.
Windows NT Thinkpad Configuration Utility Notes: (Under the Internal Modem --> Advanced selection)
Set IRQ sharing to disabled
Set 1st IRQ to your DSP IRQ (10 is recommened)
Set 2nd IRQ to your UART IRQ (i.e. ttyS1 is equivalent to COM2)
Set the DSP I/O address (0x130 is recommended)
Set the internal modem I/O address to the UART I/O address (i.e. 0x2f8 for COM2)
The DMA address is unused and can be set to anything.
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You may also specify parameters to use for the duration of the boot by using the insmod mwave line parameters listed in section Section 2.4.1. |
setserial /dev/ttySx autoconfig |
Replace ttySx with the serial port you have configured the ACP driver to use.
To test whether the serial port is setup correctly, run:
setserial /dev/ttySx |
The above command should return the following for serial port 1:
/dev/ttyS1, UART: 16550A, Port: 0x2f8, IRQ: 3 |
kernel: Mwave Modem, UART settings IRQ 0x3 IO 0x2f8 |
CONFIG_PPP=y CONFIG_PPP_ASYNC=m CONFIG_PPP_SYNC_TTY=m CONFIG_PPP_DEFLATE=m CONFIG_PPP_BSDCOM=m |