USAGE:

READ-IO port buffer length

DESCRIPTION:

Low level read from a port.

READ-IO is a native value.

ARGUMENTS

port -- Already opened port to read from. (Type: port)
buffer -- Buffer to which to append data. (Type: any-string)
length -- Maximum number of chars to read. (Type: number)

SOURCE CODE

read-io: native[
    "Low level read from a port." 
    port [port!] "Already opened port to read from." 
    buffer [any-string!] "Buffer to which to append data." 
    length [number!] "Maximum number of chars to read."
]

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