Establishing a Connection
Before the connectivity features of Debug4x can be used, a
communication link has to be established with a calculator using a cable.
There is also a method of connecting to the emulator using a cable, but this is
an unusual thing to do!
Follow these steps to establish a connection:
Connect the Cable
Connect a link cable between the PC and the calculator. On the PC side
this link cable will go to the COM1 or COM2 serial port. Remember which
port and enter this name in the Connect Using box in the Connectivity
Window.
The Connect Using box also has an auto setting. When auto is selected all of the com ports will be tried looking for an active XModem Server. Be sure to start the server before trying to connect. Auto requires a little more time to find a server than the direct method. You may choose whichever way is most convenient for you.
IOPAR
Set the calculator I/O parameters to { 9600 0 0 0 x x } (where x means
we do not care):
Start the Server on the Calculator
On the HP-49 press right-shift, release, press right-arrow.
On the HP-48 press right-shift LIBRARY and select XSRVR. Then press the
XSERVR menu button.
NOTE: the XSRVR XModem Library must first be downloaded and installed. On the HP-49G it is built-in.
Set the COMx Port
In the Connectivity Window, select the proper com port or select auto.
Click the Connect Button
Click the connect button. After a few seconds it should show an active
connection as in the Connect Using picture above. The open
connection has a picture like this.
A Calculator Directory Appears
Your window should now look like this.
Calculator Operations
Common calculator operations may be reviewed under
HP48 Operations or
HP49 Operations