Q39257: Hardware Compatibilities with QuickBASIC Version 4.50
Article: Q39257 Product(s): See article Version(s): 4.50 Operating System(s): MS-DOS Keyword(s): ENDUSER | SR# S881212-9 | mspl13_basic Last Modified: 14-FEB-1991 QuickBASIC version 4.50 is more selective of the video hardware on which it will operate than QuickBASIC versions 4.00 and 4.00b. QuickBASIC requires a video card that is 100-percent compatible with an IBM CGA, EGA, VGA, or Hercules monochrome card. If QB.EXE version 4.50 does not operate with your video system, try invoking QuickBASIC with each of the video-specific options, such as the /b (black and white) option, the /nohi (no high intensity) option, the /g (update screen as fast as possible) option, and the /h (high resolution) option. Also, try setting the video mode from MS-DOS using the Mode command before starting QuickBASIC (for example, Mode CO80 and Mode BW80). If a ghost image appears after running QuickBASIC on your video system, use the MS-DOS Mode command to clear the screen if CLS doesn't clear it. Below are computers and video adapters listed as compatible and incompatible with QuickBASIC version 4.50. The following video cards were successfully tested with QuickBASIC version 4.50: (Note: If the card is a VGA but not an IBM PS/2 VGA, there will be problems swapping on screen 10.) AST EGA (256K) COMPAQ PORTABLE (monochrome) COMPAQ VGC (Compaq's name for VGA) Daewoo (Leading Edge/AT) EGA (256K) monochrome Genoa EGA (256K) Genoa EGA (256K) monochrome Hercules monochrome IBM EGA 256K IBM EGA 64K IBM PC Convertible IBM VGA (Non-PS/2) IBM PS/2 VGA IBM MCGA IBM EGA (64K) with monochrome IBM CGA IBM MDPA NCR EGA Olivetti monochrome Olivetti EGA (256K) Olivetti VGA Paradise Autoswitch EGA (256K) PC Limited VGA Tandy EGA (256K) Vega Video Seven (7) Deluxe EGA (256K) Zenith EGA monochrome If the QB.EXE environment looks fine before running a program but is not visible after running the program, try invoking SCREEN 0,0 at the end of the program, or in QB.EXE's immediate window (F6 key). One customer reported this solution on a Compaq 2e mono VGA, where the VGA video card is built-in. The following is a list of known compatibility problems: 1. According to Microsoft's testing, the following cards loaded QB.EXE, but had numerous problems with screen swapping: Tecmar VGA Quadram VGA Vega Video Seven (7) FastWrite VGA Vega VGA (a customer suggested QB /H for better Vega VGA behavior) 2. According to Microsoft's testing, the following cards will not load QB.EXE: COMPAQ Laptop (BIOS problem - no correction) COMPAQ SLT/286 (okay with AC power, fails with battery, unless you disable the power-conservation utility PWRCON.EXE or PWRCON.COM) Genoa SuperVGA HiRes ATI VIP VGA Sigma EGA! In addition, the cards below have been reported by customers as potential problem cards. The problems range from hanging the machine to causing an unreadable display. Microsoft has not tested QuickBASIC version 4.50 on the hardware listed below; therefore, we do not guarantee compatibility. The potential problem cards are as follows (this information may be inaccurate because it is reported secondhand and is unconfirmed by Microsoft): 1. Computers with the following video cards installed (potential QuickBASIC compatibility problems): ATI VIP card Vega VGA from Video Seven (7) (although one customer said QB /H corrected QB.EXE problems with Vega VGA) Sigma VGA Everex EGA Older Quadram CGA cards Unisys CGA NEC EGA AST Turbo Scan EGA -- A customer reported he couldn't invoke QB.EXE 4.50 in 80- or 43-line mode on a PC clone with this card. Tecmar VGA -- In 43-line mode, the last seven lines on the screen are truncated. This was found to be a problem with the Tecmar VGA ROM versions 1.08 and 1.09. Packard Bell EGA -- A customer reported that the QB Express tutorial failed on this card, but Setup and the QB.EXE editor ran correctly. Paradise Auto-Switching VGA -- Two customers reported that this card caused QB.EXE 4.50 to hang when run on an IBM XT. 2. Computers, as follows (potential problems): Sperry PCs and XTs with Hercules and CGA cards Tandy 1000s with Tandy Enhanced CGA cards Leading Edge Model M (which comes with CGA or Hercules) Leading Edge Model D (but according to one customer, it might work on BIOS version 3.00 or later) IBM PCjr Zenith 151, an XT compatible, with EGA Boca, and up-to-date BIOS DEL 310 models that come with Vega Video Seven (7), VGA 16-bit graphics (try QB /H for better results) DEL AT-compatible with VGA monochrome system, Vega Video Seven (7) 16-bit graphics card. Visibility problems reported in QB.EXE. The following reportedly do not help: QB /NOHI, /B, /H, and /G, and the Mode CO80 and Mode BW80 commands in DOS. Hyundai XT (Other non-XT Hyundai models may be OK, according to one customer.) Austin 286/12-5 computer -- a customer reported that QuickBASIC generated an "illegal function call" error when he tried to use SCREEN 9. This computer comes standard with a WDM-20 EGA card integrated into the motherboard and it seems that QuickBASIC will not recognize this card because SCREEN modes other than 0 give "Illegal function call." A customer using the Zenith 151 reported an "Internal Stack Failure" when holding down an arrow key for scrolling in the QB.EXE version 4.50 editor. A customer reported that several QuickBASIC version 4.50 programs (including DEMO1.EXE) fail to run on several Tandy 3000 computers with a built-in EGA card connected to a RGB CM11 monitor. (The same program works on the customer's Tandy 3000 if it is compiled with QuickBASIC version 4.00.) There were no TSRs running on the customer's system, and the Mode CO80 and CO40 DOS commands did not help. For the ATI VGA Wonder card, some customers have reported "Illegal Function Call" errors when using SCREEN 9 in QuickBASIC programs. However, another customer reported that the ATI VGA Wonder card works properly if you run the setup correctly for the monitor type connected (monochrome, multisync, color, etc.). For example, if a monochrome monitor is connected to the card but the setup is not set correctly, SCREEN 9 fails, but SCREEN 10 may work. Setting the ATI VGA Wonder card for the monochrome monitor makes SCREEN 9 work successfully.
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