Specifications

98 Chapter 6 - Command Reference
Quiet ('Q','q')
Function: Used to enable/disable automatic reporting of certain types of
information from the controller.
The QMask byte specifies what packet types are to be enabled or Quieted
(disabled from automatic reporting). The QMask byte has the following bit
positions:
Bit Function
0 Set to Quiet all outputs. In this mode, commands are not
acknowledged but are processed. Commands cannot be
queried either.
A Quiet-all command is not followed by an Acknowledge
packet. With serial controllers, the host must wait for CTS to
be asserted before sending another command. On PC-Bus
and Micro Channel controllers, the Base I/O Port is 80h
while the reset is being performed. The host must poll the
Base I/O Port for C1h (ASCII 'A' plus the Not Ready Bit)
before sending another command.
A Quiet-all command should be issued when finished using
the E271-2202 Micro Channel controller so others may
locate and use it through the POS registers. See BUS.C,
page 68.
1 Set to Quiet Timer packets.
2 Set to Quiet Touch reports. No touch detection occurs,
conserving power.
Touch and Timer packets are Quieted by factory default on PC-Bus and Micro
Channel controllers. This prevents bus controllers from generating interrupts
before the host software is ready to accept them.
Touch and Timer packets are not Quieted by factory default on serial SmartSet
controllers. This allows serial controllers to be used with one-way communication
only.