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t.hints & tips
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2022-08-26
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HINTS & TIPS
PROGRAMMING TIP: VTAB Commands for
the COMMODORE 64.
Most other computers allow for a
VTAB command which the C64's BASIC
doesn't support. However,the
following programming tip allows you
to accomplish the same thing.
Just include the following somewhere
in the beginning of your program and
you can dispense with the many cursor
control codes:
10 DIM VTAB$(24)
20 VTAB$(0)="(HOME)"
30 FOR Y=1 TO 24
40 VTAB$(Y)=VTAB$(Y-1)+"(CSR DWN)"
50 NEXTY
For horizontal tabs, use the TAB(x)
or POS(x) command with the VTAB$(y).
EXAMPLE: To place an object/phrase at
screen location 10,20 (10 down/20
across), use:
PRINTVTAB$(10)TAB(20)"phrase"
To place an item on screen line 25,
the above must end with a semi-colon,
otherwise the entire screen will
scroll up one line.
EXAMPLE:
PRINTVTAB$(24)"phrase";
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