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- Vedi is another IFF show utility that allows all what the other does not
-
- - Show pictures in whatever resolution supporting PAL & NTSC standard
- on the Amiga, centering correctly the display, these include:
-
- NTSC PAL
-
- 320 x 200 320 x 256
- 320 x 400 320 x 512
- 640 x 200 640 x 256
- 640 x 400 640 x 512
-
- - Overscan pictures up to 384 lo-res or 768 hi-res pixels horizontal,
- if the monitor allows for a wide horizontal band, normal monitors
- (1084) allows a maximum of 368 lo-res or 736 hi-res pixels.
-
- - Overscan pictures up to 240 normal or 480 interlaced lines in NTSC,
- and up to 296 normal or 592 interlaced lines in PAL if the monitor
- allows it.
-
- - Correctly center the pictures on the display even when showing NTSC
- pictures on PAL machines or viceversa (i hope so! try it please!)
-
- - Correctly handles Hold And Modify and Extra Half Brite modes in the
- resolution that allows it on the Amiga 500/2000 (lo-res) some A1000
- doesn't allows EHB mode if the Denise chip have not been upgraded.
-
- - Correctly handles the new Dynamic-Res mode implemented here as BEAM
- chunk in a ILBM FORM. Only lo-res, all color modes and # of planes,
- interlaced or non interlaced. This does not hog the machine busy
- waiting for a beam position, a copper list is build instead and the
- processor is freed up to run at his normal speed (BEAM != CTBL).
-
- - Small size if you compare it with other show utilities with similar
- capabilities. Think to Dynamic-Res, and as you can see the full EA
- header files and routines for special FORM's handling are linked in
- the executable (and there is still room for reduction/improvements,
- since you have the sources (Vedi != COMMERCIAL PRODUCT).
-
- - Allows the display of pictures up to '1024 x 1024' pixels in lo-res
- with 'BEAM Palettes' that allows real 4096 colors simultaneously on
- each line, both in interlace or non interlace mode (BEAM != SHAM).
-
- In other words here you find the sources and some pictures I downloaded
- from BIX and hacked to work with my viewer. Sorry I have not a ray trace
- program to show up the capabilites of this mode nor an image wich fully
- use this extra color capability of your Amiga. I hope somebody will mo-
- dify their converter from "whatever format" to "HAM format" to take ad-
- vantage of these graphic improvements for the Amiga.
-
-
- WAYS TO CHANGE CTBL OR SHAM FILES INTO BEAM FILES
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-
- In future I will probably change the name of this format in CTBL, A-HAM,
- or whatever Commodore Amiga approves. (I found it works on A3000 too !).
-
- I think SHAM should be the right one since Rhett was the first (or not)!
-
- Use NewZap or whatever similar file zap utility and change the word CTBL
- in BEAM in the first block of the IFF file, then change the CAMG value,
- it is 8004, change it to 4004 to show it in lo-res with Vedi or 4804 to
- show it in lo-res HAM mode.
-
- To change SHAM files in BEAM files is easy but you need an utility to do
- the job for you (actually I should have at least a BASIC skeleton that
- does this in some place, if I find it you will find it too on the disk).
-
-
- THIS IS THE END
- =-=-=-=-=-=-=-=
-
- I have to thanks many guys on BIX for their routines (and sources), the
- artist for their images, Rhett Andersen that gave me the ideas and Bart
- Withebook which helped me with some question during the DevCon in Paris.
-
-
-