DOCUMENT:Q156362 08-AUG-2001 [winnt] TITLE :Floppy Controller Requirements for QIC-117 PRODUCT :Microsoft Windows NT PROD/VER:WinNT:4.0 OPER/SYS: KEYWORDS:kbhw kbHardware ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 4.0 - Microsoft Windows NT Server version 4.0 ------------------------------------------------------------------------------- SUMMARY ======= Floppy disk drive controllers used by QIC series tape backup units operate at two different speeds. The speed at which the controller operates determines drive compatibility and what types of tapes can be read from or written to. Older style floppy disk drive controllers operate at a speed of 500 Kbps while newer style floppy disk drive controllers operate at 1 Mbps. MORE INFORMATION ================ The floppy disk drive controller type can be determined from Registry Editor by performing the following steps: 1. Load the QIC117 driver. 2. From a command prompt, run "Ntbackup.exe" (without the quotation marks). 3. WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. Start Registry Editor (Regedt32.exe) and select the following subkey: HKEY_LOCAL_MACHINE\Hardware\Devicemap\Tape\Unit 0 Compare the FDCType entry with the table below: Registry Value Floppy Controller Type Controller Throughput -------------- ---------------------- --------------------- FDC_NORMAL Any NEC 768 compatible 250 KB/sec 500 KB/sec FDC_ENHANCED Supports the version command 250 KB/sec 500 KB/sec FDC_NATIONAL National 8477 250 KB/sec 500 KB/sec 1 MB/sec FDC_82077 Intel 82077 250 KB/sec 500 KB/sec 1Mb/sec FDC_82077AA Intel 82077AA 250Kb/sec 500 KB/sec 1 MB/sec FDC_82078_44 Intel 82078 44 Pin Version 250 KB/sec 500 KB/sec 1 MB/sec FDC_82078_64 Intel 82078 64 Pin Version 250 KB/sec 500 KB/sec 1 MB/sec(2 MB/sec capable) FDC_UNKNOWN Type unknown 250 KB/sec 500 KB/sec The floppy controller requirements for QIC standard drives are as follows: QIC117 Standard Floppy Drive Controller Requirements --------------- ------------------------------------ QIC-40 500 Kbs or higher QIC-80 500 Kbs or higher QIC-3010 500 Kbps or 1Mbps Floppy controller QIC-3020 1 Mbps Controller Additional query words: floppy qic117 travan ====================================================================== Keywords : kbhw kbHardware Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 Version : WinNT:4.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.