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PCI DATA Fax SoftModem with SmartCP
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Posted 15 October 2010 - 12:03 AM
I suspect your CDRom is running in PIO mode. When in PIO mode it can use 100% of the CPU. If this happens it leaves no CPU cycles available for running your Softmodem codec, so it disconnects.
If your CDRom supports DMA you can make sure it's enabled. You will need to do this in two places. Compaq sometimes has an option in BIOS setup to enable DMA for ATA devices.
To enter BIOS setup, press F10 when you first see the Compaq logo when you first turn on the computer, before you see the Windows XP logo. Then use the arrow keys on your keyboard and the Enter key to navigate the BIOS setup. Looking for an options to enable DMA or UDMA for your CDRom or ATA controller. Follow the on screen instructions to save your modifications. Warning: Do not change anything else. It is possible to change settings that would make your system unstable to unbootable.
Once you have verified BIOS is set to use DMA mode, boot into your Windows XP and do the following:
1. Click "Start" -> "Control Panel".
2. Click "Classic View" if you aren't in Classic View already.
3. Double-click "System".
4. In the System Properties dialog window, click the "Hardware" tab.
5. Click "Device Manager".
6. In the Device Manager, click the '+' next to "IDE ATA/ATAPI controllers" to expand that section.
7. Double-click the "Primary IDE Channel"
8. Click the "Advanced" tab.
9. Set the Transfer Mode for all devices to "DMA if available".
10. Click "OK".
11. Repeat steps 7-10 for "Secondary IDE Channel" or any other Channels listed in this section of the device manager.
12. Close the Device Manager window and System Properties window.
13. Restart your PC.
Posted 15 October 2010 - 05:31 AM
Uninstall the IDE/ATA Controller (NOT the Channels!!!) from under the IDE ATA/ATAPI Controllers branch (again in Device Manager) and reboot your PC. Windows will 'find' it again when it boots back up. DMA will be enabled by default.
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