Hi Sufyan;
The last time that I worked on that type of configuration, I was using an IRMA board in the PC that emulated a 327x terminal. Then an IRMA DLL that I called from PB to scrape the 327x buffer and drop the data into a DWO. Then on the way back to CICS, scrape the DWO changed column data & then place that back into the 327x buffer, then emulate pressing the Enter key on the 327X device (via IRMA DLL calls).
FYI: https://en.wikipedia.org/wiki/Irma_board
- How is your environment configured?
- Do you have some kind of 327x terminal emulator software that is being used?
- Is that the "Black Box" that you refer to a 327x emulator?
- Do any of these mechanisms have a callable API?
Note in order to talk directly to CICS on the mainframe, you would need to have PB talk native VTAM.
https://en.wikipedia.org/wiki/Virtual_Telecommunications_Access_Method
Regards ... Chris