QBasic 1.1: PEEK Function

Explanation

PEEK returns a byte value stored at a specified memory location. POKE writes a byte value to a specified memory location.

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

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PEEK(address)

POKE address,byte%

address	A byte position relative to the current segment address set by DEF SEG; a value in the range 0 through 65,535.
byte%	A byte value to write to the specified memory location; a value in the range 0 through 255.


DEF SEG = 0
Status% = PEEK(&H417)              'Read keyboard status.
POKE &H417, (Status% XOR &H40)     'Change Caps Lock state, bit 6.