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- VGAFIX (c) Copr. 1988 Lawrence Gozum & Marvin Gozum
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- User Manual
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- DISCLAIMER
-
- This product is distributed AS IS. The authors specifically disclaim
- all warranties ,expressed or implied, including ,but not limited to,
- implied warranties of merchantability and fitness for a particular
- purpose with respect to defects in the diskette and documentation, and
- program license granted herein, in particular, and without limiting
- operation of the program license with respect to any particular
- application use or purpose. In no event shall the authors be liable
- for any loss of profit or any other commercial damage including but
- not limited to special,incidental, consequential or other damages.
- You assume any or all risks.
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- LICENSING AGREEMENT
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- YOU MAY USE THIS PROGRAM IF AND ONLY IF YOU SEND IN THE FEEDBACK FORM.
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- You may freely distribute copies of this program in its UNMODIFIED
- STATE (MUST include this VGAFIX.DOC, VGAFIX.ASM and FEEDBACK.DOC) and
- include it in other software packages. In addition you may not charge
- more that $3.50 for copying and/or distributing this program, in the
- absence of any recognized Users Group guidelines.
-
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- WHAT IS VGAFIX ?
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- VGAFIX is a TSR (Terminate and Stay Resident) utility. It is a BIOS
- (Basic Input Output System) interceptor that redirect TWO specific
- BIOS calls to modified BIOS calls.
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- VGAFIX was primarily designed to rectify probelms associated with the
- Orchid Designer VGA card. These problems are associated with the
- palette reading and updating functions. However, there is a distinct
- probability that these DAC read/update problems are not limited to the
- Orchid Designer VGA card but to other "Tseng Labs" chip based cards.
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- WHAT WILL VGAFIX "FIX" ?
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- VGAFIX will rectify MOST problems that involve DAC read/update BIOS
- calls.
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- Symptoms of these problems include:
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- "My 'CAMERA' or screen 'CAPture' utility captures the screen data
- correctly but the colors are all mixed up, all black and white,
- or seem to have the default hardware colors.
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- "My 'CAMERA' or screen 'CAPture' utility CRASHES OR HANGS
- whenever I try to capture pictures with 256 colors in VGA or MCGA
- graphics mode."
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- "Whenever, I try to change the colors in my 'paint' or 'graphics'
- program, nothing happens or unpredictable results happen
- (including hanging or crashing my system)"
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- "Sometimes, when I try to change the colors in some of my 'paint'
- or 'graphics' programs, nothing happens or unpredictable results
- happen (including hanging or crashing my system); this seems to
- happen only when I am changing individual colors not when I load
- a new palette or change the whole palette."
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- "My 'paint' or 'graphics' program works on other machines with
- different cards but doesn't work on mine."
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- TECHNICAL INFORMATION
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- If you are a programmer, then the listing in VGAFIX.ASM will be
- of interest to you. As you will see, the TSR intercepts and
- redirects INT10H (AH=10H, AL=10H) and (AH=10H, AL=15H) calls with
- modified INT10H (AH=10H, AL=12H) and (AH=10H, AL=17H).
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- You can use this source and try other BIOS redirections which you
- suspect may be causing problems in your specific card. Please
- let us know if you have found and/or corrected a new bug in
- FEEDBACK.doc so that we can distribute a wide range of BIOS
- correction programs to benefit all.
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- WHAT PROGRAMS USE THIS BIOS CALLS ?
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- We are not sure which programs use these calls. As BIOS calls
- they are assumed to work on all "compatible" VGA/MCGA cards since
- they are original PS/2 BIOS calls. Unfortunately, BIOS chips
- are continually being updated and not everyone has the latest
- versions.
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- In the "Shareware" market, all the programs we (the authors)
- developed use these calls and many Orchid Designer VGA card users
- have reported problems using our programs. These programs are
- VGACAD, VGAPRN, BLD2GIF, VGACAP and EGA2VGA and can be located in
- various Bulletin Board Services (BBSs) or on CompuServe.
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- PLEASE REPORT YOUR TEST RESULTS ON FEEDBACK.DOC; YOU WILL NOT ONLY
- HELP US TO HELP YOU BUT NUMEROUS USERS USING YOUR CARD OR THEIR FAMILY
- OF CARDS. IT IS ALSO A REQUIREMENT TO LEGALLY USE THIS PROGRAM !
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- Send Feedback.doc to: Lawrence Gozum
- 47-50 41st Street - 1H
- Long Island City, NY 11104
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- If you are a CompuServe subscriber, leave a message at the PICS Forum
- (GO PICS) to ALL at DL1 so that the GIF Developers can respond to your
- specific situation.
-
- THANK YOU. - LAWRENCE GOZUM
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