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  ÇÒÁÐÈÉÃÓ ÉÎÔÅÒÃÈÁÎÇÅ ÆÏÒÍÁÔ ÄÉÓÐÌÁÙ
               ÓÙÓÔÅÍ
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ÃOPYRIGHT ÎOTICES AND OTHER SUCH STUFF:

'ÇÉÆ' AND 'ÇRAPHICS ÉNTERCHANGE ÆORMAT'
ARE TRADEMARKS OF ÃOMPUÓERVE, ÉNC., AN
È&Ò ÂLOCK ÃOMPANY. (YOU KNOW... THE
GUYS WHO YOU GIVE MONEY TO FOR TELLING
YOU HOW MUCH MONEY YOU WILL GIVE TO THE
ÇOVERNMENT.)

ÂÁÓÉÃ 8 IS A TRADEMARK OF ×ALRUS ÓOFT-
WARE, ÉNC.

ÔHE ÇRAPHICS ÉNTERCHANGE ÆORMAT ÄISPLAY
ÓYSTEM, OR ÇÉÆ ÄISPLAY ÓYSTEM FOR
SHORT, OR BETTER YET - ÇÄÓ (MAINLY
BECAUSE IT'S CATCHY, BUT ALSO BECAUSE É
REALLY DON'T WANT TO TYPE OUT THE WHOLE
THING), IS ÎÏÔ ÐUBLIC ÄOMAIN.  ÔHIS
PROGRAM CANNOT BE SOLD WITHOUT THE
EXPRESS WRITTEN CONSENT OF THE AUTHOR
(ME).
ÔHIS PROGRAM MAY BE DISTRIBUTED FREELY
AS LONG AS ALL ORIGINAL FILES ARE
INCLUDED WITH IT.

ÇÄÓ FALLS UNDER THE CATEGORY OF
ÆÒÅÅ×ÁÒÅ.  ÁLL É WANT FOR THIS IS THE
FAME, GLORY, RECOGNITION, AND POST-
CARDS.  ÙEP, YOU READ RIGHT! ÐÏÓÔ-
ÃÁÒÄÓ.  É KINDA COLLECT POSTCARDS, AND
É WOULD ALSO LIKE TO SEE HOW FAR THIS
PROGRAM GETS DISTRIBUTED.  ÓO IF YOU
USE THIS PROGRAM REGULARLY, YOU ARE
OBLIGATED TO SEND ME A POSTCARD. 
É GUESS YOU CAN CALL THIS ÐÏÓÔ-
ÃÁÒÄ×ÁÒÅ!!!!!
ÐLEASE SEND EVERYTHING YOU WANT TO SEND
ME TO:

ÅRIC Ã. ÒAFANAN
Ð.Ï. ÂOX 1428
ÄUNNELLON, ÆÌ 32630

ÔHIS INCLUDES POSTCARDS, COMMENTS,
PICTURES FROM CUTE GIRLS, OFFERS FOR
ÃÅÏ POSITIONS (ONLY FROM PROMINENT COM-
PANIES PLEASE), OR BETTER YET - ÇÉÆS!
É ONLY HAVE A SMALL COLLECTION AND ÁÎÙ-
ÔÈÉÎÇ (YES - ÁÎÙÔÈÉÎÇ) WOULD BE
APPRECIATED.

ÁNYWAY, ON WITH THE DOCS...


ÇÉÆ ÄISPLAY ÓYSTEM


ÁFTER USING THE ÇÉÆÆÙ PROGRAM FOR THE
Ã64 BY ÊOHN Ò. ×IND, É WAS IMPRESSED. É
ALSO THOUGHT THAT ANYTHING THE Ã64 CAN
DO, THE Ã128 CAN DO BETTER. ÓO É SET
OUT TO WRITE A Ã128 ÇÉÆ ÄISPLAY PROGRAM
THAT WAS EASIER TO USE, YET PRODUCED
BETTER DISPLAYS.

ÓO HERE IT IS.

ÔHE PROGRAM ACTUALLY CONSISTS OF
SEVERAL FILES:

1) ÇÄÓ          
- ÔHIS IS THE ÍAIN ÍODULE OF THE ÇÄÓ
  PROGRAM. ÉT LOADS IN THE 2 SUPPORT
MODULES, HANDLES THE CHOOSING OF THE
ÇÉÆ, THE INTERPRETATION OF THE ÇÉÆ
HEADER, AND THE ACTUAL DECOMPRESSION OF
THE COMPRESSED RASTER DATA.

2) ÇÄÓ.ÄÅÆÁÕÌÔÓ 
- ÔHIS FILE CONTAINS THE NAMES OF THE
  DEFAULT SUPPORT MODULES.

3) ÇÄÓ.Ä/????   
- ÆILES WITH THIS PREFIX ARE ÄISPLAY
  ÍODULE FILES.
ÇÄÓ WAS WRITTEN TO BE MODULAR TO ALLOW
DIFFERENT DISPLAY FORMATS TO BE USED.

4) ÇÄÓ.Ø/????   
- ÆILES WITH THIS PREFIX ARE ÅXTENSION
  ÈANDLER ÍODULES.
ÇÉÆ FILES HAVE THE OPTION TO INCLUDE
'UPDATES' IN THE FORM OF ÅXTENSION
ÂLOCKS, AND THE ÅXTENSION ÈANDLER
ÍODULE TAKES CARE OF THESE BLOCKS.

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ÔHE ÍAIN ÍODULE

ÔHE ÇÄÓ PROGRAM HAS BEEN WRITTEN FOR
EASE OF USE. ÁLMOST EVERYTHING CAN BE
DONE THROUGH THE USE OF MENUS.

ÕSE THE ÃURSOR ËEYS TO HIGHLIGHT A
CHOICE. ÕSE THE ÒETURN ËEY TO PICK IT.
ÕSE THE ÅÓÃ ËEY TO ABORT ALMOST ANY-
THING (THE PROGRAM WILL TELL YOU WHEN
IT DOES SOMETHING ELSE).

ÍOST OF THE MENUS ARE SELF-EXPLANATORY,
SO É WILL ONLY COVER THOSE AREAS THAT
MAY NEED A LITTLE MORE CLARIFICATION.

ÔHE ÍAIN ÍENU HAS 3 CHOICES:

1) ÖIEW A ÇÉÆ    
- ÁLLOWS YOU TO VIEW A ÇÉÆ ON ÄRIVES 8,
  9, 10, OR 11.
ÙOU CHOOSE THE ÇÉÆ FROM A ÄIRECTORY
LISTING.
ÎÏÔÅ - ÇÉÆS MUST BE ÐROGRAM,
ÓEQUENTIAL, OR ÕSER (THOUGH NON-ÇÅÏÓ)
TYPE FILES.

2) ÅXIT          
- ÐRETTY SELF-EXPLANATORY.

3) ÓELECT ÍODULE 
- ÁLLOWS YOU TO SELECT ANOTHER ÄISPLAY
  ÍODULE OR ÅXTENSION.
ÍODULE FROM ÄRIVES 8, 9, 10, OR 11.
ÁLSO MAKES IT THE ÄEFAULT ÍODULE AS AN
OPTION.
ÎÏÔÅ - ×HEN YOU WRITE A NEW ÄEFAULTS
FILE, BOTH THE ÃURRENT ÄISPLAY ÁÎÄ
ÅXTENSION ÍODULES ARE MADE THE
ÄEFAULTS.

ÁLL THE SECONDARY MENUS ARE ÒÅÁÌÌÙ
SELF-EXPLANATORY (ÙÅÓ/ÎÏ, ÃHOOSE A
ÄRIVE, ETC.) SO É DON'T THINK É NEED TO
GO INTO THEM (AFTER ALL, IF YOU OWN A
Ã128, THEN YOU'VE ÇÏÔ TO HAVE ABOVE
AVERAGE INTELLIGENCE!).


ÔHE ÓCREEN ÌAYOUT


ÔHE ÓCREEN IS DIVIDED INTO 3 PARTS:

1) ÃREDIT ÂLOCKS 
- ÔHIS IS THE UPPER HALF OF THE SCREEN.
ÔHE TWO SMALLER BLOCKS ARE CREDITS READ
FROM THE ÍODULES (SO IF YOU'RE WILLING
TO PROGRAM A ÍODULE, YOU CAN LET PEOPLE
KNOW WHO DID IT! ÉT'S ONLY FAIR AFTER
ALL.).

2) ÇÉÆ ÉNFO      
- ÔHE LOWER LEFT PORTION OF THE SCREEN
IS USED TO DISPLAY INFORMATION ABOUT
THE ÇÉÆ YOU HAD CHOSEN.  ÍOST OF IT
NEEDS NO EXPLANATION, BUT HERE'S ONE
THING TO WATCH OUT FOR - É BELIEVE
THERE HAS BEEN AN UPDATE TO THE ÇÉÆ
FORMAT. ÉT HAS BEEN LABELED 'ÇÉÆ89A'.
ÇÄÓ RECOGNIZES ANY ÇÉÆ WITH THE
'ÇÉÆ' SIGNATURE, BUT IT ÍÁÙ NOT PROCESS
'89A' TYPE ÇÉÆS CORRECTLY.  ÍOST ÇÉÆS
ARE CURRENTLY 'ÇÉÆ87A'.

3) ÍESSAGE ÁREA  
- ÔHE LOWER RIGHT PORTION OF THE SCREEN
  IS THE ÍESSAGE ÁREA.
ÔHIS IS WHERE MOST (IF NOT ALL) USER
INTERACTION WILL TAKE PLACE.

ÁND THAT'S ALL THERE IS TO IT!

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ÇETTING ÔHIS ÔHING ÒUNNING


ÔHE BASIC STEPS TO USING THIS PROGRAM
ARE:

ÒÕÎ "ÇÄÓ" ÏÎ Õ(WHATEVER)
(IT WILL LOAD, RUN, THEN LOAD IN THE
ÄEFAULT ÍODULES FROM THE ÃURRENT ÄRIVE)

ÃHOOSE 'ÖIEW A ÇÉÆ' FROM THE ÍAIN ÍENU.

ÐICK THE ÄRIVE THE ÇÉÆS ARE ON.
(IT WILL THEN READ IN ALL FILENAMES
WITH THE '.ÇÉÆ' SUFFIX)

ÈIGHLIGHT AND ÃHOOSE THE ÇÉÆ YOU WANT
TO VIEW.

ÃONFIRM YOUR ÓELECTION.
(YOU CAN ABORT IF ALL YOU WANTED TO DO
WAS LOOK AT THE ÇÉÆ INFO)

ÁND AWAY IT GOES!!!

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ÔHE ÄISPLAY ÍODULE


ÔHE ÄISPLAY ÍODULE IS THE PART OF THE
SYSTEM THAT (YOU GUESSED IT!) ACTUALLY
DISPLAYS THE ÇÉÆ.ÉT ALSO IS RESPONSIBLE
FOR DOING THE COLOR TRANSLATIONS.
É CHOSE TO MAKE IT A MODULE SO THAT
DIFFERENT FORMATS COULD BE CHOSEN
WITHOUT ACTUALLY REWRITING THE ENTIRE
PROGRAM.  ÔHESE FORMATS CAN INCLUDE
40-COLUMN ÈI-ÒES AND ÍULTICOLOR
GRAPHICS SCREENS, ÂASIC 8 FORMATS, THE
ÉÐAINT FORMAT, OR EVEN CUSTOM MADE
FORMATS.  ÁLL IT TAKES IS THE CORRECT
ÄISPLAY ÍODULE.

ÔHE ÍAIN ÍODULE TAKES CARE OF EVERY-
THING (INCLUDING DECOMPRESSING THE
RASTER DATA - THAT WAS A TOUGHIE!)
EXCEPT ACTUALLY PUTTING THE PICTURE ON
THE SCREEN, SO IT'S NOT HARD TO COME UP
WITH A NEW ÄISPLAY ÍODULE. ÆOR ANY
PROGRAMMERS WHO ARE INTERESTED, É WILL
BE UPLOADING ÐROGRAMMING ÎOTES 'ÒEAL
ÓOON ÎOW'. (ÆAMOUS ÌAST ×ORDS!)

ÔHERE ARE 3 ÄISPLAY ÍODULES INCLUDED
WITH THE ÇÄÓ PROGRAM:

1) ÇÄÓ.Ä/ÎÏÒÍÁÌ    
- ÔHIS IS THE ÄEFAULT ÍODULE. ÉT IS SET
  TO PROVIDE A PRETTY GOOD DISPLAY FOR
  THE MAJORITY OF THE ÇÉÆS.

2) ÇÄÓ.Ä/ÌÉÇÈÔÅÒ   
- ÉF THE ÇÉÆS SEEM TO BE COMING OUT TOO
  DARK (ALOT OF 256 COLOR ÇÉÆS TEND
  TO), THEN THIS MODULE WILL ATTEMPT TO
  MAKE THE COLORS BRIGHTER.

3) ÇÄÓ.Ä/ÄÁÒËÅÒ    
- ÔHIS MODULE IS SET TO DARKEN THE 
  COLORS IN A ÇÉÆ.

ÁLL 3 REQUIRE 64Ë OF ÖÄÃ ÒÁÍ.

ÔHESE ÄISPLAY ÍODULES WERE CODED FOR
16-COLOR ÇÉÆS, BUT 4 AND 32-COLOR ÇÉÆS
STILL SHOW UP PRETTY GOOD.  ÎOW
256-COLOR ÇÉÆS ARE ANOTHER MATTER...

ÓINCE THE Ã128 HARDWARE ONLY SUPPORTS
16 COLORS, THEN TO GET ANY REASONABLE
DISPLAY OF 256 COLORS REQUIRES SOME
FORM OF ÓÏÆÔ×ÁÒÅ WORKAROUND, SUCH AS
DITHERING OR INTERLACE (LIKE IN ÉÐAINT
- GOSH, É WISH É HAD THE ÉÐAINT
FORMAT!).  ÁNYWAY, THE ÄISPLAY ÍODULES
THAT COME WITH THE ÇÄÓ PROGRAM ARE
PRETTY SAD WHEN IT COMES TO 256-COLOR
ÇÉÆS (AND THAT'S COMING FROM THE PERSON
WHO PROGRAMMED THEM!).

ÔHE ÄISPLAY ÍODULES WILL 'STRETCH' OR
'SQUASH' A ÇÉÆ TO FIT INTO THE 640X200
ÂASIC 8 FORMAT.  ÉT CAN HANDLE
ÉNTERLACED ÇÉÆ FILES UP TO A HEIGHT OF
200 LINES.

ÁFTER VIEWING THE ÇÉÆ, HITTING ANY KEY
EXCEPT FOR THE 'Ó' KEY WILL RETURN YOU
TO THE ÍAIN ÍODULE.

ÔHE 'Ó' KEY ALLOWS YOU TO SAVE THE ÇÉÆ
AS A 640X200 8X2-COLOR BLOCK ÂASIC 8
PICTURE.  ÁFTER HITTING THE 'Ó' KEY,
YOU WILL HEAR 2 QUICK BELLS TO NOTIFY
YOU THAT SAVING HAS BEGUN. ×HEN IT IS
DONE, YOU WILL BE RETURNED TO THE ÍAIN
ÍENU.

ÔHE PICTURE WILL BE SAVED ON THE SAME
DISK AS THE ÇÉÆ SO BE SURE THAT THERE
IS ENOUGH ROOM ON THE DISK FOR IT
(TYPICALLY 50-80 DISK BLOCKS).  ÔHE NEW
FILE WILL HAVE THE SAME NAME AS THE ÇÉÆ
WITH THE ADDITION OF THE 'ÐÉÃÔ.' PREFIX
AND NO '.ÇÉÆ' SUFFIX.

**** ÄÏ ÎÏÔ ÒÅÍÏÖÅ ÁÎÙ ÄÉÓËÓ ×ÈÉÌÅ ÔÈÅ
     ÇÒÅÅÎ ÌÉÇÈÔ ÉÓ ÏÎ! ****

ÔHIS MEANS YOU CANNOT CHANGE DISKS
BEFORE SAVING THE PICTURE (ACTUALLY YOU
CAN, BUT YOU'LL GET A DISK ERROR
AFTERWARDS).  ÔHIS IS A SHORTCOMING OF
THE ÄISPLAY ÍODULE WHICH IS CURRENTLY
BEING WORKED ON.

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ÔHE ÅXTENSION ÈANDLER ÍODULE


ÔHE ÅXTENSION ÈANDLER ÍODULE HANDLES
ÇÉÆ ÅXTENSION ÂLOCKS.  ÔHESE ÅXTENSION
ÂLOCKS ARE USED TO IMPLEMENT SPECIAL
FUNCTIONS, GIVE EXTRA ÇÉÆ INFO, ETC.
THAT ARE NOT PROVIDED FOR IN THE
STANDARD ÇÉÆ FORMAT.  ÔHE ÅXTENSION
ÈANDLER ÍODULE PROVIDED JUST IGNORES
THESE ÅXTENSION ÂLOCKS.  ÁCTUALLY, É
HAVEN'T FOUND ANY ÇÉÆS WITH ÅXTENSION
ÂLOCKS AT ALL!  ÉF YOU DO, LET ME KNOW
IF THE ÅXTENSION ÂLOCK ÈANDLER WORKS,
EH?  (ÓORRY ABOUT THIS FOLKS, BUT YOU
CAN'T TEST SOMETHING IF THERE'S NOTHING
TO TEST IT WITH!)

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ÉF YOU FIND ANY PROBLEMS WITH THIS
PROGRAM, PLEASE LET ME KNOW.  É REALLY
HAVE TRIED TO SQUASH ALL THE BUGS, BUT
MY SUPPLY OF ÇÉÆS TO TEST WITH IS ÖÅÒÙ
LIMITED.  ÓO IF YOU FIND ANYTHING
WRONG, É WON'T TAKE IT TOO PERSONALLY.

ÕNFORTUNATELY, MY LAWYERS TELL ME TO
INFORM YOU THAT É CAN'T BE HELD
RESPONSIBLE FOR ANY DAMAGE INCURRED
THROUGH THE USE OF THIS PROGRAM.  ÎOT
THAT THERE'S ANY CHANCE OF THAT MIND
YOU - NONE OF MY EQUIPMENT HAS BEEN
DAMAGED AND IT WAS USED TO ÔÅÓÔ THIS
PROGRAM!  É ÄÉÄ HAVE A PROBLEM WHILE
WRITING THE DECOMPRESSION ROUTINE
THOUGH - É THINK É DEVELOPED A NEW ART
FORM!  É ALSO THINK É SUFFERED BRAIN
DAMAGE LOOKING AT IT! <JUST KIDDING -
REALLY!>
ÁNYWAY, ABOUT THE ONLY WAY YOU COULD DO
DAMAGE TO ANYTHING IS IF YOU GET SO
OVERWHELMED BY THE INCREDIBLE PICTURES
BEING DISPLAYED THAT YOU FALL OVER
BACKWARDS AND STARTLE THE CAT WHO JUMPS
ONTO YOUR DESK AND SPILLS YOUR DRINK
ALL OVER YOUR COMPUTER!  ÙOU SHOULDN'T
HAVE HAD THAT DRINK THERE ANYWAY...

×ELL THAT'S ABOUT IT FOR THE
DOCUMENTATION.  É HOPE É DIDN'T LEAVE
OUT TOO MUCH BUT THE PROGRAM IS PRETTY
EASY TO RUN ANYWAY.

ÅNJOY!
ÅRIC Ã. ÒAFANAN
ÑLINK: ÍEÅRIC

ÃOPYRIGHT 1990
ÁLL ÒIGHTS ÒESERVED
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