zCics - introduction

z390 EXEC CICS Assembler and COBOL Support

Z390 CICS assembler and COBOL application transaction manager support was developed by Melvyn Maltz and is distributed as open source in the z390\cics directory.

The z390 CICS compatible transaction manager includes a server supporting multiple local and remote sessions connected via a TCP/IP network. The transaction server can be started by running cics\bat\Z390CICG.BAT or cics/bash/z390cicg which also starts local terminal sessions.

Remote clients can be started by running cics\bat\Z390KCPL.BAT or cics/bash/z390kcpl for multiple remotes. To start a single remote for tracing and testing, use cics\bat\Z390KCPR.BAT or cics/bash/z390kcpr.

For SOA client server messaging the z390 TCPIO macro and the associated SVC for runtime support are used to request zCICS functions from the server and to pass data and status back to the client on a TCP/IP network.

For release highlights, please see the zCics History overview.

z390 Support

Programs written in COBOL are converted into macro statements.

The mz390 macro processor parses EXEC CICS statements and maps them into standard assembler macro calls. All the EXEC CICS support macros are in the cics directory.

The mz390 macro processor replaces standard DFHRESP(error code) and DFHVALUE(cvda) references with the corresponding standard fullword literal constant.

The ez390 runtime GUAM user interface dialog is used by each client to support TN3270 screen and keyboard I/O via TPUT with FULLSCR option and TGET with ASIS option for TN3270 standard data streams.