Q38886: Leading Edge Display Problems with QuickBASIC Version 4.50

Article: Q38886
Product(s): See article
Version(s): 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 23-APR-1990

Microsoft has not tested QuickBASIC Version 4.50 with Leading Edge
computers; therefore, we do not claim any compatibility between
QuickBASIC Version 4.50 and Leading Edge. Running QuickBASIC Version
4.50 on a Leading Edge computer might give you some display or editor
problems.

It has been reported that QuickBASIC works correctly with Leading Edge
Model D with ROM BIOS Versions 3.00 or later (running MS-DOS 3.30),
but may fail with earlier versions. Microsoft has not confirmed this
information. Other unconfirmed reports are listed below.

It has also been reported that when using a Leading Edge Model M, you
are unable to get QuickBASIC Version 4.50 to appear on the screen
successfully. The problem occurs with either a Leading Edge Hercules
video card or a Leading Edge CGA video card. According to the report,
earlier versions of QuickBASIC work correctly. According to one
customer, the Leading Edge Model M (and Model MT) has a Switch 3 for
Advanced Features (for color support and RS-232 enhancements). If
Switch 3 is ON, the picture is bad using a CGA card and monochrome
monitor, but with Switch 3 off, the screen looks fine.

It has been reported that a Leading Edge Model D does not work
correctly when used with either the Microsoft Mouse or the shortcut
editing keys when cutting and pasting text in QuickBASIC Version 4.50.
The first time an attempt is made to cut and paste text, the operation
is successful. However, when a second attempt is made to cut and paste
text, the operation is unsuccessful.

It also has been reported that when TRACE is on in the QuickBASIC
environment, the lines of text are not highlighted; only a cursor
appears, moving from line to line. The Leading Edge's video card may
be causing the problem.

Two customers reported that SETUP.EXE would not work on the Leading
Edge Model D, but they could run QuickBASIC and QB Express from the
floppy disks.

A customer with a Leading Edge Model D2 found a solution to his video
problems using QuickBASIC. He said an ATI video file came with his
computer, and he ran the program VCONFIG, which contains a menu that
let him set video options. His computer was set to VGA, but he
actually had an EGA, so he set it to EGA, and then QB.EXE worked
correctly with no video problems.

As stated above, this information has not been confirmed by Microsoft.

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