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DATA (256 * 8), FOLLOWED BY A 256 BYTE
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COLORFILE. THIS EDITOR WILL SAVE FROM
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$800 (2048) TO $10FF (4351). IT WILL
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LOAD A SET FROM ANY SOURCE AT $800,
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REGARDLESS OF THE START ADDRESS IN THE
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FILE HEADER. A COLORFILE WILL BE
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CREATED BY THE ACT OF SELECTING COLORS
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(CTRL N). LOADING A FILE LONGER THAN
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$900 (2304) BYTES LONG WILL WRITE OVER
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PART OF THE EDITOR, WITH UNPREDICTABLE
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RESULTS. FILES SAVED FROM THIS EDITOR
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WILL HAVE A START ADDRESS OF $800 IN
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THE HEADER. THE EDITOR USES PRG FORMAT
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FILES ONLY.
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COLORFILE: THE LAST 256 BYTES OF A
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CHARACTERSET, STARTING AT $1000,
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CONTAINING THE COLOR INFORMATION FOR
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EACH CHARACTER IN THE SET. BITS 0-2
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CONTAIN THE FOREGROUND COLOR, BIT 3
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DETERMINES MULTI-COLOR MODE (1 = ON),
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AND BITS 4-7 ARE NOT USED, EXCEPT IN
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THE FIRST 3 BYTES OF THE FILE. THESE
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THREE BYTES USE BITS 4-7 TO STORE, IN
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ORDER, THE BACKGROUND COLOR, MULTICOLOR
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2, AND MULTICOLOR3.
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EDIT MODE: THE NORMAL OPERATING MODE
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OF THIS PROGRAM. AT THE TOP LEFT OF THE
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SCREEN WILL BE THE EDIT DISPLAY, A 16
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BY 16 CHARACTER DISPLAY OF THE CURRENT
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BLOCK. AT THE CENTER RIGHT OF THE SCREEN
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THE ACTUAL BLOCK WILL BE DISPLAYED. ON
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THE EDIT DISPLAY WILL BE A SMALL BOX
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WITH WHITE TOP AND BOTTOM, AND BLACK
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SIDES. THIS IS THE CURSOR, WHICH COVERS
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ONE PIXEL AT A TIME.
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HI-RES MODE: CHARACTER DATA IS
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DISPLAYED ONE BIT AT A TIME, WITH 1 BITS
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BEING FOREGROUND COLOR, AND 0 BITS
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BACKGROUND COLOR.
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MULTI-COLOR MODE: CHARACTER DATA IS
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DISPLAYED TWO BITS AT A TIME, WITH 00
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BIT PAIRS BACKGROUND COLOR, 01 BIT PAIRS
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MULTICOLOR2, 10 BIT PAIRS MULTICOLOR3,
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AND 11 BIT PAIRS FOREGROUND COLOR.
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HORIZONTAL RESOLUTION IS SACRIFICED FOR
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MORE COLORS, SINCE THE MULTICOLOR PIXELS
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ARE TWICE AS WIDE AS HI-RES ONES.
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3 USING THE EDITOR
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TO START UP: LOAD"BLOCK EDIT.O",8 THEN
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RUN. YOUR C64 MUST BE IN A NORMAL CON-
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FIGURATION AS FAR AS THE START OF BASIC
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GOES. IF YOU ARE IN ANY DOUBT, RESET THE
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MACHINE (RESET BUTTON, OR POWER OFF, OR
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SYS 64738) BEFORE LOADING.
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TO SKIP TITLE: LOAD PROGRAM, THEN SYS
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4352
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AFTER THE TITLE, YOU WILL SEE A
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COMMAND SUMMARY. IN GENERAL, SINGLE
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KEYSTROKES DO EASILY REVERSIBLE THINGS,
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SUCH AS EDITING PIXELS, OR SELECTING THE
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BLOCK TO BE EDITED. CONTROL KEYS (CTRL
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PRESSED SIMULTANEOUSLY WITH ANOTHER KEY)
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WILL DO THINGS YOU'LL WANT TO BE MORE
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CAREFUL WITH, SUCH AS ERASING ENTIRE
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BLOCKS, OR LOADING A NEW CHARACTERSET
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OVER THE CURRENT ONE.
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THE NEXT THING YOU WILL SEE IS THE
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LOAD ROUTINE PROMPT. IF YOU ARE STARTING
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A NEW SET, DOWNLOAD THE ROM CHARACTERS
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FIRST. SEE THE FINAL SECTION FOR WHY.
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OTHERWISE, LOAD THE SET YOU WANT TO WORK
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ON FROM DISK. IF YOU WANT TO SEE THE
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TITLE ROUTINE AND CHARACTERS, SELECT
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EITHER ROM OR DISK AND THEN RETURN TO
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THE EDITOR. YOU WILL THEN HAVE TO USE
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CTRL N TO SET A COLOR, SINCE EVERYTHING
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IS INITIALIZED TO BLACK. AFTER THAT, A
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D COMMAND WILL DISPLAY THE CURRENT SET
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IN SOMETHING OTHER THAN BLACK ON BLACK.
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THE BEST WAY TO LEARN THE EDIT MODE IS
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TO MESS AROUND WITH IT. ? WILL GIVE YOU
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BACK THE COMMAND SUMMARY WHEN IN EDIT,
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AND ALL OF THE NON EDIT MODES GIVE
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PROMPTS AND CAN BE BACKED OUT OF WITHOUT
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CHANGING ANYTHING.
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COMMANDS: EDIT MODE
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CURSOR KEYS: THESE WILL MOVE THE
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CURSOR AROUND THE EDIT DISPLAY AT THE
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LEFT OF THE SCREEN. NOTE THAT THE CURSOR
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WILL GO OFF THE BOTTOM OR RIGHT OF THE
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