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Latest revision as of 19:25, 12 August 2020

Flight Simulator: Support for a DTK BIOS Configuration

PSS ID Number: Q50738 Article last modified on 10-28-1994

4.00

MS-DOS

Summary:

The Flight Simulator version 4.00 KB1.KBD and KB2.KBD keyboard drivers will not operate correctly with a DTK BIOS configuration. However, it is possible to modify your keyboard driver to allow a DTK BIOS configuration to run with Flight Simulator versions 4.00 and 4.00a.

Microsoft has confirmed this to be a problem in Flight Simulator versions 4.00 and 4.00a. This problem was corrected in Flight Simulator version 4.00b.

More Information:

Below is the modification that can be made to the KB1.KBD keyboard driver (for keyboards with function keys on left) and KB2.KBD keyboard driver (for keyboards with function keys on top) to allow a DTK BIOS configuration to run with Flight Simulator version 4.00.

The following information describes a brief DOS DEBUG routine for each file, which will modify the keyboard driver to bypass the DTK problem:

To Modify KB1.KBD (for Keyboards with Function Keys on Left)

  1. Copy DEBUG.COM from your DOS directory into your FLTSIM4 directory (for example, type “COPY .COM .COM” [without the quotation marks]). If DEBUG.COM has not been installed on your system, it can be found on the DOS Utility disk that came with the computer.

  2. Type the following to modify KB1.KBD:

    debug kb1.kbd (then press ENTER) e11d (then press ENTER) 0b (then press SPACEBAR) 85 (then press ENTER) e142 (then press ENTER) eb (then press ENTER) w (then press ENTER)

    (Note: At this point, a message saying “Writing 039C bytes” should appear.)

    q (then press ENTER)

  3. Remove DEBUG.COM from the Flight Simulator directory (for example, type “DEL .COM” [without the quotation marks]). This step is not mandatory.

To Modify KB2.KBD (for Keyboards with Function Keys on Top)

  1. Copy DEBUG.COM from your DOS directory into your FLTSIM4 directory (for example, type “COPY .COM .COM” [without the quotation marks]). If DEBUG.COM has not been installed on your system, it can be found on the DOS Utility disk that came with the computer.

  2. Type the following to modify KB2.KBD:

    debug kb2.kbd (then press ENTER) e11d (then press ENTER) 9f (then press SPACEBAR) c5 (then press ENTER) e143 (then press ENTER) eb (then press ENTER) w (then press ENTER)

    (Note: at this point, a message saying “Writing 03D3 bytes” should appear.)

    q (then press ENTER)

  3. Remove DEBUG.COM from the Flight Simulator directory (for example, type “DEL .COM” [without the quotation marks]). This step is not mandatory.

KBCategory: KBSubcategory: ============================================================================= Copyright Microsoft Corporation 1994.