home *** CD-ROM | disk | FTP | other *** search
- * The "/R" and "/P" and "/SL" command line options have been changed.
- Please refer to the manual forand "/P"is now the default. See #4
- below regarding the "/SL" modifications and its effect on hardware
- disk caching.
-
- 1) 486, 386, 386sx, 286 and AT users with extended memory SHOULD disable
- "Shadow RAM". Although VGACAD is predominantly coded in assembly and C;
- QuickBasic (QB) 4.00b is used as a shell and error-handler. QB v4.00b
- HATES Shadow RAM for some reason and locks-up (at least on our 386sx
- clone). With AMI BIOS, you can disable Shadow RAM by pressing <DEL>
- during boot and changing the set-up; it is much wiser to have EMM.SYS,
- QEMM.SYS or WHATEVER.SYS to manage expanded and extended RAM anyway.
- With 2MB on board, we suggest you use 720KB for VDISK to emulate a fast
- 3.5" drive and allocate the rest as expanded memory; a 1MB system with a
- 384KB RAMdisk (VDISK or RAMDISK) would match 640x480x256 screens which
- decompress to 307200 bytes.
-
- Users with third-party EMM.SYS drivers should avoid mapping the ROM
- BIOS to "high" RAM (i.e., Shadow RAM) or mapping extended/expanded RAM
- to areas where there is no RAM (e.g., to use LOADHI). QB's runtime
- module crashes (at least on our 386sx clone). We suggest that you
- keep two versions of your CONFIG.SYS file; one with your usual set-up
- and one with a set-up to run ALL our programs/utilities (preferably
- with as much VDISK as possible). VGACAP may not work in "high" RAM.
-
- If your system still locks-up, do a 'naked boot' ! Rename AUTOEXEC.BAT
- and CONFIG.SYS (e.g., to *.BAK) then reboot TO isolate the incompatible
- TSR or SYS file.
-
- 2) DOS 4.0 - Avoid using this "buggy" version of DOS; unexpected results have
- been reported with file management and mouse intialization; use 4.01 !
- NOTE: DOS 4.01's SHELL HAS BEEN REPORTED TO CONFLICT WITH VGACAD; AVOID
- INSTALLING IT IF YOU HAVE PROBLEMS WITH VGACAD.
-
- USING VGACAD WITH DOS 2.0 AND BELOW WILL HAVE UNPREDICTABLE RESULTS !!!
-
- 3) Fast Machines - Use VGACAD with the "/SL:n" option. Certain menus zip
- right through you. THIS AFFECTS ONLY THE SPRAY FUNCTION. At DOS prompt
- type "VGACAD /SL:1000"; a 1000 delay function and will be sufficient for
- 386's at 20MHz. All other functions will require the release on mouse
- button to proceed.
-
- 4) Large/Fast Hard Disks or 'Hardware Cache' users - SEVERE problems with
- IMGPRO functions involving the saving or loading of image data have been
- reported. This caused the infamamous "ERROR 5 at VDISK"; in other cases
- "blank" or "trashed" screens were saved to TEMP files.
-
- The "/SL:" option now triggers direct disk/video RAM to go through slower
- but safer LOW memory buffers to avoid "mix-ups" with hardware caching.
-
- To trigger "cache-compatible" routines, ALWAYS use the "/SL:" option:
-
- eg. VGACAD /SL:1000
-
- 5) Terminate and Stay Resident Programs - Certain TSRs (e.g., screen blanker,
- BIOS interceptor, BIOS accelerator) may cause the program to hang. We
- encourage getting a mouse; AVOID using the keyboard mouse emulator. SYS
- files in your CONFIG.SYS file generally behave like TSRs.
-
- 6) Mouse and Keyboard - Systems that write an address for a mouse interrupt,
- when no mouse exists, will cause VGACAD to 'hang'. Run KEYME.COM then
- run VGACAD with the "Force Keyboard" switch ("VGACAD /FK") if you don't
- have a mouse and do not get the "USE KEYBOARD (Y/N)" prompt.
-
- Some optical mice (e.g. PC Mouse, Kraft, Quadram) are incompatible with
- BIOS calls used in VGACAD. If you have mouse problems - run the MOUSE.COM
- file that comes with your mouse instead of MOUSE.SYS (DEVICE=MOUSE.SYS) in
- your CONFIG.SYS file; if your mouse moves erratically then adjust mouse
- parameters described in COMMAND LINE usage. If your mouse "hangs" the
- system, then use the "/FM" ("Force Mouse") option; it assumes your mouse
- is initialized by some other program, which YOU MUST DO BEFORE RUNNING
- VGACAD; make sure you have the text cursor OFF or use another graphics
- program to initialize your peculiar mouse !
-
- WARNING: SINCE KEYME.COM IS A RESIDENT PROGRAM, THERE IS A HIGH
- PROBABILITY THAT UNPREDICTABLE RESULTS CAN OCCUR; THIS
- HAS BEEN REPORTED PARTICULARLY WHEN USING THE IMGPRO
- MODULE FUNCTIONS. WE HIGHLY SUGGEST USING A MOUSE !!!
-
- 7) Some Trident DVGA users have reported palette read/write problems with
- our Beta test versions. This means that certain Trident-based VGA and
- SVGA cards are BIOS-compatible at this level. The "/P" option MUST NOT
- be used to avoid palatte read/write problems:
-
- "VGACAD /P" <ret>
-
- This is the same with old Orchid Designer VGA cards with old BIOS. This
- is a similar if not weirder problem experienced by users with old Orchid
- Designer VGA cards. Orchid Designer VGA users will need the resident
- VGAFIX.COM program to be loaded PRIOR TO RUNNING VGACAD !
-
- 8) Printing the manual on older versions of EPSON printers will not show the
- extended ASCII character set used for illustrations; we highly recommend
- using a Shareware program called IMPRINT (v1.5 or higher) to print the
- manual; it does an EXCELLENT job of printing the manual with LETTER-
- QUALITY output on "generic" 8-pin Epson/IBM compatible printers.
-
- A form feed character is appended to the end of every page; this was done
- in consideration of Laser printers. If this causes a problem on dot
- matrix printers, use any ASCII editor to search and replace the ASC
- character "12" or 0x0C (hex) if you have blank pages between each
- printed page.
-
- 9) GIF 89a support is implemented in the VSCRN (Virtual Screen) module only.
- If GIF 89a files are accessed from the Files Menu, decoding is aborted.
- Since VGACAD is a paint/image processing program not a decoder/viewer,
- when a GIF 89a file is detected from the VSCRN Menu, the user is asked
- whether or not the FIRST image of the GIF 89a file is to be decoded; all
- extension blocks, including plain text rendering blocks, are skipped
- until an 87a image block is located and subsequently decoded.
-
-
- If you have any compatibility questions leave E-Mail at CompuServe.
-
-
- Lawrence [73437,2372]
-
-