Classic Computer Magazine Archive PROGRAM LISTING: 89-02b/FADERII.DOC

by Patrick L.  Dell'Era

(From ANTIC, MAY 1985, p. 57)

This is an enhancement of the
popular "Fader" program that
appeared in the September, 1984
ANTIC.  The original program created
a dot-by-dot "lapse-dissolve" effect
on Micro Painter files.  Fader II
now works on Micro Illustrator
pictures as well.  It will work on
all Atari computers with 48K and
disk drive.
Last month, we published Patrick
Dell'Era's reworking of Philip
Price's "Picture Painter."  We now
present Patrick's Fader II, based
upon the popular dot-by-dot picture
dissolve program by Joseph Grande
that ANTIC printed in the September
1984 graphics issue.
The original Fader was written in
the BASM language, which is now
often hard to find.  Patrick has
disassembled the object code into
full MAC/65 source code, and
re-written it with several
Unlike the original program, Fader
II can handle both uncompressed and
compressed Graphics 7+ picture
files.  This means you can have any
combination of Micropainter or Micro
Illustrator files on the same disk.
(Micro Illustrator software comes
with the KoalaPad, the Atari Touch
Tablet and other widely used
graphics products.)
So that Fader II can tell the
difference between the file types,
you must use a .PIC extender on your
compressed files.  The Micro Painter
files should have a letter other
than P).
Fader II will cycle through the each
picture creating a screen pixel
dissolve.  When it reaches the last
file, it will begin again with the
first. As with the original program,
you may skip the pause between
pictures by pressing [START].
In Fader II, after a picture fades
in, it may be held indefinitely on
the screen by pressing [OPTION].  In
this way, one may take a good look
at a particularly fetching piece of
art, or gracefully change the disk
without racing the clock.  If you
have DOS on your disk, pressing
[SELECT] will take you to it.
Fader II does not sit in the DUP.SYS
area of memory, so a Binary Load can
be done on it from DOS without
creating a MEM.SAV file.  It will
run with or without a cartridge
Patrick L.  Dell'Era is a member of
the San Francisco Atari users' group
ABACUS, and a strong assembly
language programmer whose time is
currently being taken up with a new

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