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- DOCUMENT:Q103933 10-SEP-1993 [W_NT]
- TITLE :Windows NT May Use a Different HAL Version for Some 486 CPUs
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- ----------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system version 3.1
- - Microsoft Windows NT Advanced Server version 3.1
- ----------------------------------------------------------------------
-
- On some computers with older versions of the Intel 486 processor,
- Windows NT may use a different version of the Hardware Abstraction
- Layer (HAL); it may use HAL486C.DLL instead of HAL.DLL.
-
- Intel identifies different versions of their processors with a letter
- designating the Stepping. The latest Stepping version of the 486 is D.
- If the Intel 486 processor with the C Stepping uses the standard
- HAL.DLL, there may be periodic system failures.
-
- The correct HAL should be used based on the type of 486 processor
- installed in a computer. Setup installs HAL486C.DLL by default if it
- cannot confirm that the processor is a 486 with D or later Stepping.
-
- In Windows NT, it is possible to determine the Steppings of a
- processor by doing the following:
-
- 1. From the File menu in Program Manager, choose Run, and then select
- WINMSD.EXE.
-
- 2. In Windows NT Diagnostics, choose Hardware, and then choose CPU
- Steppings.
-
- The next dialog box identifies the Stepping version of CPU 0, which is
- the main processor.
-
- Additional reference words: 3.10 W_NTAS crash
- KBCategory:
- KBSubcategory: hrdwr
-
- =============================================================================
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-
- Copyright Microsoft Corporation 1993.