Asus K7M-RM Motherboard AMR driver for Windows NT4

Motherboard » Asus

License: Freeware / Date Added: Mar 2008 / Operating Systems: Windows NT 4.0 / File Size: 2.07 MB / Publisher: Asus

Download

Motorola SM56 AC-L Soft Modem Build 82.3 Revision History Log
This file lists the main functional enhancements, additions, and bug fixes for the different versions of the SM56 AC-L Modem.

Known Incompatibilities
• Crystal Clock Accuracy
Proper modem operation requires the 24.576 MHz crystal clock frequency to be accurate to +/-50ppm (0.005%) or better. This crystal is located on the modem riser board if it is configured as a primary codec on the AC-Link. If it is configured as a secondary codec on the AC-Link, the modem clock is derived from the AC-Link BIT_CLK signal. In this case, the crystal drives the AC '97 audio codec (which is either down on the motherboard or on the riser board if it is a true AMR combo card).

• Modem I/O Base Address
Make sure the AC-Link modem I/O base address is aligned on a 100 hex boundary after installation. Earlier versions of the AC-Link silicon and BIOS's did not ensure this automatically. Release versions of the motherboards should enforce this at install time. You can check the I/O base address of the modem via the Modem Resources tab in Device Manager. The I/O base address must be xx00.

• Intel 440MX Mobile Systems
If you freshly install or re-install Win 9x on 440MX mobile platforms, especially if using 440MX silicon earlier than Rev. B0, the PnP subsystem will not detect the presence AC-Link peripherals. The reason is that PCI device enumeration defaults to "Use Hardware". You must go into the Device Manager, double click System Devices, then double click PCI bus. In the PCI bus Properties window select the Settings tab and select "Use BIOS" under the Device Enumeration box. Now restart the PC.

• Power Management and TAPI Applications
Some communication applications that use Window's Telephony Application Programming Interface (TAPI) function calls may experience problems when the computer goes into standby/suspend mode. One example of this is Hyperterminal, supplied with Windows. Testing with various internal soft, controllerless, and DSP based hardware modems has shown that with the application open (communicating with the modem), after the PC returns from suspend/standby state, the application can no longer communicate with the modem. Closing and re-opening the application restores the modem communication link. While various issues are still being investigated, the problem source points to the TAPI layer in Windows. When the PC goes to sleep, somehow the device thread gets severed and not restored on waking. The OS does not signal this to the application layer, which is why the application thinks it can still communicate with the modem...but it cannot. This problem has been reproduced with various modems from various vendors. It is not specific to the SM56 AC-L. It is also erratic, in that sometimes the communication link with the modem stays up after the PC wakes up.

• Wake On Ring (WOR)
All the code is in the SM56 AC-L modem to support wake on ring. For WOR to function you must make sure you have a BIOS that fully and correctly supports it, as well as making sure the feature is turned on in the BIOS and in the OS. If all system components do not fully support WOR, it will not work.

Build by Build Details

• Build 82.3 February 18, 2000:
1) Fixed a problem causing NT4 to blue screen.

• Build 82.2 February 10, 2000:
1) Updated uninstall.

• Build 82.1 January 24, 2000:
1) Fixed a problem causing NT4 to blue screen.

• Build 82 January 20, 2000:
1) Fixed problem with direct play gaming applications. SCR #198, 199.
2.) Fixed problem with negotiating EC/DC. SCR #230.
3.) Fixed problem when making a V.90 connection on a loaded loop. SCR #231.
4.) V.17 FAX fixes.

• Build 81 December 01, 1999:
1) Tray app DirectX3/6 fix.
2) Eliminated read callback of 20
3) Fixed a compatibility problem with Korean communication app.
4) K56 performance enhancements.
5) V.90 performance enhancements on PBX lines.
6) Fixed Prodigy ISP connect problems.
7) Fixed country specific call progress issues.
8) Circular buffer fix.
9) Fixed CCITT override problem.

• Build 80.5 October 7, 1999:
1) Changed the install to use the RunOnce Registry key, per new Microsoft Logo requirement.

• Build 80.4 September 29, 1999:
1. Initial build for NT4

Most Popular Drivers

Asus P3W Motherboard Intel 810 VGA driver for Win 95/98
Asus C-Media Audio driver v2.75a for Windows 98
Asus P3C-D Motherboard C-Media Audio driver v2.75a for Windows XP
Asus P3W-E Motherboard Crystal CS4280 Audio Driver for Win95
Asus P3C-D Motherboard Crystal SoundFusion Audio Chip Win95 Driver V4.06.00.2870
Asus P3C2000 Motherboard AD1881 SoundMAX Win9X Driver V4.06.0604
Asus P3C2000 Motherboard AD1881 SoundMAX NT4.0 Driver V4.02.0025
Asus P3C-L Motherboard Yamaha XG YMF744 Audio for Win9x
Asus P3C2000 Motherboard Yamaha SoftSynthesizer S-YXG50 WaveTable Driver V3.02.01
Asus P3B-1394 Motherboard Win9x Audio Driver

Related Drivers

Asus K7M-RM Motherboard AMD 751 AGP Filter Driver v5.02 for Win2000
Asus K7M-RM Motherboard AMD 751 AGP Mini-Port Driver v4.45 for Win98
Asus K7M-RM Motherboard VIA 4-in-1 driver for Win9x/NT/2000
Asus K7M-RM Motherboard AMD Athlon AGP Driver for Win 2000
Asus K7M-RM Motherboard VIA IRQ Routing Driver
Asus K7M-RM Motherboard AMR driver for Win ME
Asus K7M-RM Motherboard AMR driver for Windows 2000
Asus K7M-RM Motherboard AMR driver for Windows 98
Asus K7M-RM Motherboard VIA Bus Master PCI IDE Driver
Asus K7M-RM Motherboard VIA VT82C686A/B Audio controller driver for Win9x/ME/2000
Asus K7M-RM Motherboard VIA VT82C686A/B Audio controller driver for Linux
Asus K7M-RM Motherboard VIA VT82C686A Audio Driver
Asus K7M-RM BIOS 1002