APPLICATIONSCREATION GRAPHIQUE ★ Character Definer ★

Character Definer (Your Computer)Applications Creation Graphique
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This program is a comprehensive character definer. It is very user-friendly and allows redefinition of characters on the Amstrad CPC-464 micro. As well as the standard "pixel-by-pixel" definition procedure, it also enables the user to:

  • Rotate the character to the right by 90 degrees.
  • Flip all the character's bits to produce the "inverse" character.
  • Produce a mirror image — in the vertical plane — of the current character.
  • Save the defined character's data map to tape.
  • Read in previously saved data maps.
Definition takes place on an eight-by-eight grid, over which the user moves a cursor using the cursor keys. Pixels of the character can be "toggled" on and off using the Copy key.

Pressing R rotates the character by 90 degrees to the right; F inverts all the bits; M produces a vertical mirror image of the character and D allows the reading in of a saved data map for further adaption. Pressing C when the character is complete produces a print out of the data map in both decimal and hexadecimal. At this point the user is given the option of saving the data map to tape, and then whether he wants to rerun the program.

Conversion of this program to run on other micros may prove to be difficult. This is due to the fact that it uses a pair of windows on the screen and also that it uses a transparent mode of character printing. Windows are a feature found on only a handful of other home micros and the "transparent" printing is — to my own knowledge — unique to the Amstrad.

A stripped-down version of this program can be produced, but it would involve redesigning the screen layout and completely changing the screen-handling routines. Also the Symbol command would have to be replaced with Pokes to define a character.

The program allows you to dump the characters you have just defined to tape as a binary file called Char.
If you want to load these into your games program, or back into the editor for further editing then follow the procedure shown in lines 70 and 75.

SYMBOL AFTER 128
LOAD "CHAR"

  • Although Himem will normally be the same, problems could be caused by the user attaching add-ons to the machine which will alter Himem.

In this case, if you say add a disc drive to your system and still want to use characters you defined before getting it:

SYMBOL AFTER 128:CLOW = HIMEM + 1
LOAD "CHAR", CLOW

will put the characters into the correct position in memory.

YOUR COMPTER

★ PUBLISHER: YOUR COMPUTER
★ YEAR: 1984
★ CONFIG: 64K + AMSDOS
★ LANGUAGE:
★ LiCENCE: LISTING
★ COLLECTION: YOUR COMPUTER 1984
★ AUTHORS: J.Gardiner & A.Gardiner
 

★ AMSTRAD CPC ★ DOWNLOAD ★

Type-in/Listing:
» Character  Definer    (Your  Computer)    ENGLISHDATE: 2013-08-14
DL: 252
TYPE: ZIP
SiZE: 7Ko
NOTE: 40 Cyls
.HFE: Χ

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L'Amstrad CPC est une machine 8 bits à base d'un Z80 à 4MHz. Le premier de la gamme fut le CPC 464 en 1984, équipé d'un lecteur de cassettes intégré il se plaçait en concurrent  du Commodore C64 beaucoup plus compliqué à utiliser et plus cher. Ce fut un réel succès et sorti cette même années le CPC 664 équipé d'un lecteur de disquettes trois pouces intégré. Sa vie fut de courte durée puisqu'en 1985 il fut remplacé par le CPC 6128 qui était plus compact, plus soigné et surtout qui avait 128Ko de RAM au lieu de 64Ko.