Commodore 128D - Page 413

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Sound Interface Device (SID): The MOS 6581 sound synthesizer
chip responsible for all the audio features of the Commodore
128. See the Commodore 128 Programmer's Reference Guide
for chip specifications.
Source Code: A non-executable program written in a high-level lan
guage. A compiler or assembler must translate the source code
into an object code (machine language) that the computer can
understand.
Sprite: A programmable, movable, high-resolution graphic image.
Also called a Movable Object Block (MOB).
Standard Character Mode: The mode the Commodore 128 oper
ates in when you turn it on and when you write programs.
Start Bit: A bit or group of bits that identifies the beginning of a data
word.
Statement: A BASIC instruction contained in a program line.
Stop Bit: A bit or group of bits that identifies the end of a data*word
and defines the space between data words.
String: An alphanumeric character or series of characters sur
rounded by quotation marks.
Subroutine: An independent program segment separate from the
main program that performs a specific task. Subroutines are
called from the main program with the GOSUB statement and
must end with a RETURN statement.
Subscript: A variable or constant that refers to a specific element in
an array by its position within the array.
Sustain: The midranged volume of a musical note.
Synchronous Transmission: Data communications using a syn
chronizing, or clocking signal between sending and receiving
devices.
Syntax: The grammatical rules of a programming language.
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GLOSSARY