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February 9, 2021 00:24
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PRODOS-friendly shape-based font demo using Beagle Brothers proportional font shapes ("ACOMPUTE" from the Apple Mechanic diskette).
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1 REM | |
2 REM PRODOS HI RES DEMO PROGRAM | |
3 REM USING BEAGLE BROS SHAPE FONT AT $6000 | |
4 REM MODIFIED FROM Apple II High Resolution Character Generator, COMPUTE! June 1981 | |
5 REM | |
8 LOMEM:28928 | |
10 POKE 232,0: POKE 233,96: REM POKES SHAPE TABLE START ADDRESS | |
30 PRINT CHR$(4)"BLOAD ACOMPUTE,A$6000" : REM LOADS SHAPE TABLE INTO MEMORY, MATCHES PREVIOUS POKES | |
40 HOME: HGR2: POKE 49234,0: HCOLOR=3: ROT=0: SCALE=1: REM SETS HIRES GRAPHICS PARAMS, USES PAGE 2 TO HIRES MEMORY | |
45 REM H AND V ARE MANUAL ATTEMPTS AT CENTERING. NOT SOPHISTICATED. | |
50 P$ = "THIS DEMO PROGRAM":H=7:V=1: GOSUB 1000 | |
60 P$ = "USES THE HI-RES":H=9:V=4:GOSUB 1000 | |
70 P$ = "CHARACTER GENERATOR":H=5:V=7: GOSUB 1000 | |
80 P$ = "AND SHAPE TABLE": H=9: V=10: GOSUB 1000 | |
90 P$ = "TO PRINT THIS":H=10:V=13: GOSUB 1000 | |
100 P$ = "DISPLAY":H=13:V=16: GOSUB 1000 | |
110 CALL 64780 | |
120 TEXT : HOME : END | |
1000 X=8*H-7:Y=INT(11*V-8):P=LEN(P$) : REM X AND Y SET START OF EACH LINE ASSUMING CONSTANT CHAR WIDTH | |
1010 DRAW ASC(MID$(P$,1,1))-31 AT X,Y : REM DRAW FIRST CHARACTER OF LINE AT ABS COORDINATES | |
1011 REM BEAGLE BROS FONTS ARE PROPORTIONAL AND SHAPE 99 MANAGES KERNING | |
1012 REM XDRAW 99 MOVES THE "PEN" TO THE START OF THE NEXT CHARACTER. | |
1015 FOR I=2 TO P : XDRAW 99 : DRAW ASC(MID$(P$,I,1))-31 | |
1020 NEXT I: RETURN |
Author
tcjennings
commented
Jul 1, 2019
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