NCR Decision Mate V - C O M M an D S and Parameters

User Information
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2
1 0
X
INT RAM RCM
X X ief QEF
Figure 2.1 The status byte
X Indicates that this bit is unused.
INT When this bit is set, the Mouse Interface has issued ar
interrupt and the interrupt line is s t i l l active (low),
ROM I f this b it is set, there is a fa u lt in the ROM of the
Mouse Interface.
RAM I f this b it is set, there is a fa u lt in the RAM of the
Mouse Interface.
IBF Input Buffer Full: when this b it is set, the Mouse
Interface is busy. Your program should wait until this
b it is reset before transmitting commands or data tc
the Mouse Interface.
OBF Output Buffer Fu ll: when this b it is set, one byte oi
data is available for reading by the processor of your
NCR DECISION MATE V. Your program should not attempt tc
read data while this bit is zero.
COMMANDS AND PARAMETERS
This sectio n con sis ts o f a summary o f the commands
•recognized by the microprocessor of the Mouse Interface. I
number o f these commands require subsequent parameters,
e ith e r to be tra n sm itted to or read from the Mouse
Interface.
NOTE: After issuing a command entailing parameters, i t is
important to complete a ll parameters form allj
d e ta ile d fo r that command. Th e re fore, do not
terminate prematurely the parameter sequence of a
command by transmitting a further command.
Remember that a ll commands are transmitted to the Mouse
In te rfa c e via P o rt 2, parameters (data) v ia Port 1
Parameters are read from the Mouse Interface via Port 1.
MOUSE-7