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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