Epson PX-8 User Manual page 78

~
Acoustic
Telephone
Acoustic
I·
#523 .. LJix-lO
Coupler
Line
Coupler
~I
Telephone
Acoustic
I·
.. I
Modem
1
#523
Other remote
Coupler
Line
Micro, Mini
or Mainframe
For an explanation of RS232C communication see Chapter 4.
SOFTWARE
The two utility programs available on the PX-8 are TERM and FlUNK. Vari-
ous other communications programs are available which work in roughly the
same way, and you should consult their respective manuals for instructions as
to their use.
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3.9.1.
TERM
The TERM utility is used when it is necessary to 'talk' to a remote computer,
using the PX-8 as a terminal, sending single files in either direction or simply
using both as 'dumb' messengers. In the following descriptions the second com-
puter is assumed to be an EPSON QX-1O (MultiFont CP/M version) for the
sake of clarity, but equivalent software may be used on other machines for this
type of communication.
The first thing to do is make sure the PX-8 is connected to the required exter-
nal devices using the relevant cables, then load the TERM program from the
appropriate drive.
When TERM is run the screen shows the following:
The RS-232C status is :
bit rate
=
4800 data bits
=
8 stop bits
=
2 parity
=
NONE
Use CONFIG.COM program to change the RS-232C status.
Modes of TERM
1 = Normal
2 = Delete LF after CR (send)/ Insert LF after CR (receive)
3 = Insert ETX and Delete LF after CR (send)
Select a mode 1
The top line of the screen shows the default RS232C settings (they may not
be the same as the ones shown here). These can be changed using the CONFIG
program and should be set before running the TERM program. Make sure the
receiving computer has the same settings, and change one or other machine's
settings so that they agree.
The three options given on the screen refer to how data is sent and received.
i)The default is option 1 which merely requires you to press the
key, and sets the computer to send and receive data without any
modification. This is the most commonly used setting.
ii)Some computers automatically add a line feed to any carriage return in
the data they receive, so in this case you would select Option 2 (delete
LF). This will have the effect of deleting line feed codes (ASCII code
10
decimal; hexadecimal OA) following carriage returns (hex OD) during
transmission, that is, when sending data. It also adds a line feed code
immediately after any carriage return code in received data. Remember
that a carriage return merely moves the cursor to the beginning of a
line - it is the line feed code that moves it to the next line down.
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