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- PANSCRN - Hardware Panning for the IBM Enhanced Graphics Adapter
- -------
- by Doug Wolfgram - President, Microtex Industries - Co-author of PCPAINT.
-
- PANSCRN is a simple demo showing off the hardware panning and scrolling
- capabilities of the IBM EGA. To run PANSCRN, you must have an EGA with
- at least 128K of memory on it and both PANSCRN.EXE & PANSCRN.PIC in the same
- directory. PANSCRN.PIC is just a 16 color PCPAINT PLUS picture that I drew.
- If you like, you may create any 640x350 PCPAINT PLUS 16 color picture and
- rename it PANSCRN.PIC and it will work. Of course, if you have PCPAINT PLUS,
- you may use this picture to play with as well. The core of this demo is a
- little assembly language subroutine that sets up a virtual window as large
- as I tell it, (provided the EGA has enough memory!) and then, upon command,
- puts the coordinate I tell it at the top left corner of the screen. So by
- writing a bunch of little loops that move the screen 1 pixel at a time, I
- can smoothly scroll around the screen wherever I want. This demo runs in
- 320x200 16 color mode.
-
- If you have any questions or want to know how to do it yourself, call me at:
-
- PCPAINT PICTURE SWAP LINE
- A PCBOARD BBS
- 24 Hours
- (714) 545-8100 --- Soon on PC PURSUIT!
-
- Sorry, no 2400 baud yet!
-
- - doug
-