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4
Serial Communication Routines
send strings to Com1 via the system output queue
terminate the use of a serial channel
prepare for using multiple serial channels
retrieve a character from Com1 via the system input queue
retrieve a line from Com1 via the system input queue
send a string to Com1 via the system output queue
send a string to Com1 via the system output queue
set the characteristics of a serial channel
set the characteristics of serial channel 3
prepare a serial channel for use
determine the status of a serial channel
Queue Management Routines
delete data from a queue
retrieve data from a queue
determine the size of the data area of a queue
determine the number of bytes of data in a queue
populate a string with characters from a queue
prepare a queue for use
copy data from a queue without removing it
put data in a queue
put a byte into a queue
put the characters of a string in a queue
determine if a queue has data available
Date/Time Routines
get the month, day, year corresponding to a date value
compute the day number corresponding to a day of a year
get the day of the week corresponding to a date value
get the ordinal day of the year corresponding to a date value
get the current hour, minute and second
get the current date and time information
set the current month, day, year
set the current hour, minute and second
set the current date and time information
get the current clock tick value
Data Manipulation Routines
reverse the order of bits in a byte
extract the high byte of a value
extract the high word of a value
extract the low byte of a value
extract the low word of a value
construct a 32-bit value from two 16-bit values
construct a 16-bit value from two 8-bit values
construct a string from a sequence of bytes
extract the middle two bytes of a 4-byte value
set the state of specified bits in a byte
Shl() 
shift a value to the left
Shr() 
shift a value to the right
change the state of specified bits in a byte
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