User`s guide

You can prepare the above programs for execution as follows:
1. Assemble the CALLVERS program using MAC as follows:
MAC CALLVERS
2. Generate a COM file for CALLVERS with HEXCOM:
HEXCOM CALLVERS
3. Assemble the RSX program ECHOVERS using RMAC:
RMAC ECHOYERS
4. Generate a PRL file using the LINK command:
LINK ECHOVERS [OPI
S. Rename the PRL file to an RSX file:
RENAME ECHOVERS*RSX=ECHOVERS.PRL
6. Generate a COM file with an attached RSX using the GENCOM command:
GENCOM CALLVERS ECHOVERS
7. Run the CALLVERS.COM module:
CALLVERS
The message
**** CALLVERS
followed by the message
**** ECHOVERS ****
appears on the screen five times if the RSX program works.
End of Section 4
4-25
Construction of an RSX Program CP/M 3 Programmer's Guide