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-
- ABOUT GRAPHICS MODES
-
- When The Multimedia Workshop starts up, it automatically
- detects the graphics card in your computer and adjusts
- accordingly. With most graphics cards there are two or more
- graphics modes available in which you can work. For instance,
- if you have an EGA system, you can create pictures in one of
- two EGA modes (16-colors) or in one of two CGA modes (2 or 4
- colors). But if you use the EGA-High mode, other computers
- with only CGA will not be able to display your presentations
- properly. So, you'll have to decide what mode to use. Of
- course, your presentations will look better if you use the
- highest resolution mode your computer supports, but at the
- cost of losing the portion of your audience who have only
- lower resolution equipment.
- Resolutions are measured in pixels, the little dots of
- which everything that appears on your monitor are composed.
- These are the modes supported by The Multimedia Workshop:
-
- CGA-LO 320 x 200 4-color
- CGA-HI 640 x 200 2-color
- EGA-LO 640 x 200 16-color
- EGA-HI 640 x 350 16-color
- Hercules 720 x 348 2-color
- VGA-HI 640 x 480 16-color (see note 1)
- VGA-LO 320 x 200 256-color
- XGA 320 x 480 256-color (see note 2)
- SVGA 640 x 480 256-color (see note 3)
- Universal Mode 640 x 200 2-16 colors (see note 4)
-
- When starting a new script file, you are asked if you
- want to change video mode. If you answer [y], then your
- computer will present a menu of the graphics modes available
- on your particular computer. You can also change video mode
- in the middle of a script file from the FILE menu.
-
- If using a Hercules system, no menu is presented, since
- there is only one video mode available and therefore no
- choice.
-
- Most VGA-equipped systems can work in Hercules mode, but
- must be configured with software which comes with your video
- card at the DOS prompt before starting programs such as
- TMW or Mshow.
-
- Note #1 VGA-HI 640 x 480 16-color
-
- This mode is the highest resolution which most VGA cards
- can support. It really requires 640k of RAM. In most
- cases, the runtime engine MSHOW.EXE will work fine on any
- system with VGA graphics in this mode, but if the end user
- has a ton of TSRs or a monster shell program, results could
- be unpredictable.
- The creation program, TMW.EXE, however, requires every
- bit of the 640k of RAM, and even fairly small TSRs or shells
- can sometimes get in the way. If you use this mode and get a
- low RAM warning, try commenting out your TSRs in your
- autoexec.bat file, or running from DOS rather than from a
- shell. The Multimedia Workshop and MSHOW.EXE do try to use
- XMS or EMS when available, but we have seen systems where it
- is not available and the low 640k is also full of stuff.
- Generally this happens with a large SMARTDRV.SYS or ramdisk,
- or with DOS 5 loaded low, or with STACKER or other software
- loaded low. See your MS-DOS manual for more information if
- you have 1mb of RAM or more, yet you get a low RAM warning.
-
- Note #2 XGA MODE
-
- This mode gives you 256 colors in 320 x 480 resolution
- which is nearly Super-VGA, yet it runs on almost all
- ordinary VGA-equipped computers. There are two limitations:
- There is no text font which looks "ordinary" with this
- mode, and there are few .PCX files created in this mode.
-
- SVGA MODE
-
- This requires a Super-VGA equipped computer with 1mb
- video RAM. It is not available in the shareware version.
-
- With some SVGA video cards, The Multimedia Workshop will
- not run in Super-VGA mode under MS-Windows, so you'll have to
- quit Windows and run from the DOS prompt.
-
- Note #4 UNIVERSAL MODE
-
- Universal Mode will run on any IBM-compatible computer
- which has any standard graphics system. The resolution is
- the same as EGA-LO at 640 x 200 pixels. If the computer has
- EGA or VGA capability, your Universal Mode presentation can
- have up to 16 colors, but the exact same presentation can run
- on Hercules or CGA systems with only 2 colors! This is very
- useful in creation of catalogs and shareware, where your
- audience may have a variety of different computer equipment.
-
- While Universal Mode products will run with MSHOW on all
- standard IBMs, The Multimedia Workshop will create in
- Universal Mode only on computers equipped with EGA or VGA,
- because of their 16-color potential. You can, however,
- create Universal Mode presentations on CGA and Hercules
- systems, by editing the "mode" line at the top of your script
- files to read: "mode0." And, you can guess at the colors by
- editing the "O" lines with numbers corresponding to the
- colors you want on EGA and VGA displays.
-
- To create in Universal Mode, certain conventions must be
- observed. .PCX files created for different resolutions will
- not work properly. The aspect ratio is changed a bit for
- Hercules systems. Circles will be circular on all systems,
- but their overall size grows on Hercules displays. You might
- rather use ellipses in Universal mode to ensure a functional
- picture in all situations. Small CGA laptop displays
- sometimes squish a relatively square image to rectangular.
- You should definitely test Universal Modes on a variety of
- equipment to be sure your creations will be sensible for all
- end users.
-
- The first 8 colors on the color menu will appear as black
- on CGA and Hercules displays, while the last 8 colors will be
- white. Therefore, fills can work differently on EGA and VGA
- displays than on their lesser cousins.
-
- NOTE: If you use modes 4,6,8 or 9, then you might want to
- know about two drawing modes used by The Multimedia Workshop
- called Xor Mode and WSYIWYG Mode. These modes affect the way
- Lines, Rectangles and Filled Boxes work, but only when using
- modes 4,6,8 or 9.
-
- WSYIWYG is the standard mode, used by all the other video
- modes, and shows Lines, Rectangles and Filled Boxes exactly
- as the will appear in the finished product. (hence the
- acronym: What You See Is What You Get) However, it is slow
- and blinky in the listed modes. Therefore, you can also
- select Xor Mode from the Door menu. In this mode, colors are
- not always truly represented until you have finished drawing
- an object, but it is a fast and smooth mode. Also, Filled
- Boxes are empty rectangles until you press [Enter] or the
- left mouse button. Xor Mode is the default when The
- Multimedia Workshop is first started.
-
- _____________________________________________________________
- end of chapter.
-