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GLOSSARY/SYMBOLS, TERMS, AND DEFINITIONS
1–32
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G
gang programmer:
or EPROM of the TMS370 microcontrollers in a production environment
An interactive, menu-driven system that provides programming support for on-chip EEPROM
H
HALT mode:
processing in all the modules. This is the lowest-power mode in which all register contents are preserved.
An operating mode that reduces operating power by stopping the internal clock, which stops
I
IDLE mode:
power mode.
An operating mode in which the CPU stops processing and waits for the next interrupt. It is not a low-
immediate operand:
opcode in the machine code
An operand whose actual constant value is specified in the instruction and placed after the
index:
An 8-bit unsigned number added to a base address to give a final address
instruction:
operands, along with optional labels and comments
The basic unit of programming that causes the execution of one operation; consists of an opcode and
interrupt:
address corresponding to the source of the interrupt. When the interrupt is finished, the CPU resumes execution
at the point where it was interrupted.
A signal to the CPU that stops the flow of a program and forces the CPU to execute instructions at an
isochronous:
see
isosynchronous-communications mode
isosynchronous-communications mode:
clock signal (SCICLK) common to both the sender and receiver. The format is identical to the asynchronous-
communications mode and consists of a start bit, data bits, an optional parity bit, and a stop bit.
An SCI mode in which data transmission is synchronized by a
K
K:
When used in the context of specifying a given number of bits of information, 1K = 2
10
= 1024 bits. Thus,
64K = 64
×
1024 = 65 536 bits.
L
label:
A symbol that begins in column 1 of a source statement and corresponds to the address of that statement.
linker:
and executed by the devices
A software tool that combines object files to form an object module that can be allocated into system memory
LOW ADDR/HI ADDR:
address.
External memory address bus. Output only. Port B is the low address, and Port C is the high
low-power mode:
modules. There are two low-power modes: HALT and STANDBY.
An operating mode that reduces operating power by reducing or stopping the activity of various