Advertisement
IV
SIO PORT PROCEDURES
The SIO Port is a full 8 bit serial input/
output port. It is used in conjunction with
the Control Port, which in this case allows
the User to 1) read selected status lines
from the UART: and 2) read and write on exter
nal I/O control lines.
Setting up the SIO Port involves three steps:
IV.1___HARDWARE JUMPERS
INPUT JUMPER AREA
In the INPUT JUMPER AREA:
16
1. configuring the hardware jumpers;
2. making the external interface
connections; and
3. running test programs to check
out the operation of the port.
1. The serial data from the appropriate
receiver (TTL, EIA, or Current Loop)
must
be jumpered to the RDATA
terminal (CO) to be input to the UART.
2. The desired UART status signals and
external control signals must be
jumpered to the Control Port inputs.
The UART status signals are available
at Row B (B0-B7) and need to be jump
ered to the desired input bit of the
Control Port, available at Row A
Any external control signals will be
taken from the appropriate type of
receiver (TTL or EIA) and jumpered
to the_ desired bit
Port (Row A ) .
MIO
User Guide
(A0-A7).
of the Control
Advertisement
