Beehive International B102 Service Manual page 90

CURSOR LIfslE REGISTER - Register containing current line position. Counts 0 to 23 up or down to depict
cursor line count on display
CURSOR POSITION BUFFER - Buffer that is loaded to store carsorcharacter position for block send operations.
CURSOR POSITION REGISTER - Register containing current cursor position. Counts 0 to 79 up or down to depict
cursor positionwithin any one line on display
DECR BCURL - Decrement Block Cursor Line - Downcounts cursor line buffer containing stored line count in
Block Send. When buffer is counted to zero, starting line count has been reached,
DECR BCURP- Decrement Buffer Cursor Position Register —This signal decrements the first of 2 Position Registers.
DECR CURL —Decrement Cursor Line - This signal will downcount cursor line register one court at a time
DECR CURP —Decrement Cursor Position. This signal downcounts cursor position register one count at a time.
PECR CURP 2 • Decrement Cursor Position Register 2-This signal decrements second ofthe 2 position
registers, which will decrement cursor position 16 counts at a time.
DOT POSITION COUNTER - This counter Is a divide-by-7 counter counting each of the 7-dot positions in one
character scan
DR —Data Ready - This signal signifies a character has been loaded in the Receiver Buffer and is ready to be put
in the bus.
DRR - Data Ready Reset —After character has been read on the bus, this signal will reset the receiver buffer
and ready it for the next character to be received
EN AUX PORT - Enable Auxiliary Port - Signal will turn on Input/Output gates on Auxiliary port .
EN AUX SEND - Enable Auxiliary Send - Command signal which starts a block send out Auxiliary port.
EN BFR OUT —Enable Buffer Out - Command signal used to put receiver buffer on the bus for character receipt
to display
EN BLKSEND —Enable Block Send - Command signal which starts block send out main port
EN LIT OUT - Enable Literal PRom Output - Signal used to put block send delimiter Rom on the bus
EN MAIN PORT - Enable Main Port - Signal will turn on Input/Output gates on main port.
EN MEM OUT —Enable Memory Out - Signal used to output contents of memory onto bus for block send output
EN REG OUT —Enable Register Out -Signal used to put stored contents of insert/delete registers onto the bus
for restoration to new location In memory.
EXT CLK INPUT- External Clock Input - Input line on I/O port; a TTL times 16 clock on this input can externally
clock the terminal (switch selectable to input)
EXT XMIT CLK (X8) - External Transmit Clock (times. 8)- This is a TTL output clock at 8 times the baud rate
which can be used to clock an external device (switch selectable to output)
FE - Framing Error - One of thje unused outputs of the UART Receiver
FIRE TIMER —Signal used to start AUX port internal delay timer
FMT FLOP CLK - Format Flip Flop Clock - Clocking signal used to set or reset Format-Format On-Format Off
FORMAT —Term used to define an established protected-unprotected screen of data
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