GWBASIC User's Manual

GW-BASIC User's Guide
The number of bytes required to get a 10 by 12 image into an integer array is 4+INT((10*2
+7)/8)*12, or 40 bytes. An integer array with at least 20 elements is necessary.
If OPTION BASE equals zero, an integer array can be used to examine the x and y dimensions
and the data. The x dimension is in element 0 of the array, and the y dimension is in element 1.
Integers are stored low byte first, then high byte, but data is transferred high byte first (left-most),
then low byte.
It is possible to get an image in one mode and put it in another, although the effect may be quite
strange because of the way points are represented in each mode.
Examples:
10 CLS: SCREEN 1
20 PSET(130, 120)
30 DRAW "U25; E7; R20; D32; L6; U12; L14"
40 DRAW "D12;L6":PSET(137,102)
50 DRAW "U4; E4; R8; D8; L12"
60 PSET(137, 88)
70 DRAW "E4; R20; D32; G4": PAINT(139, 87)
80 DIM A(500)
90 GET (125, 130)-(170, 80),A
100 FOR I=1 TO 1000: NEXT I
110 PUT (20,20), A, PSET
120 FOR I=1 TO 1000: NEXT I
130 GET (125,130)-(170, 80),A
140 FOR I=1 TO 1000: NEXT I
150 PUT (220,130), A, PRESET
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