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NAME

PURPOSE

FORMAT
ABS Returns the absolute
value of a numeric
expression.		 ABS(x) where: x is an expression
ASC Returns the ASCII code
for the first character
of a string.		 ASC(x$) where: x$ is a string
ATN Returns the arctangent
of an angle.		 ATN(x) where: x is a number or numeric expression
BEEP Sounds the buzzer for
half a second.		 BEEP
CALL Invokes a machine lang-
uage program.		 CALL address ,A ,HL where: address is the starting address in ROM
A is an integer to be input to register A .
HL is an integer, input to register HL

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