GPSS/H Updates

Release AY317 of GPSS/H requires a license date of December, 2001 or later.  It includes the following addition:

Three new keywords have been added to the BSYSCALL Block and SYSCALL Statement:

    maximize    - indicates that an invoked application is to run full-screen

    minimize    - indicates that an invoked application is to appear only on the taskbar

    nowindow  - indicates that an application produces no screen output and requires no window

The following example illustrates:

    bsyscall    'myprog.exe',minimize

If an application is called many times via (b)syscall, the "nowindow" option may be attractive.  However, when run without a window, an application that fails may have difficulty issuing status messages.  "Minimize" is a safer option.  Flashing icons on the taskbar are far less annoying than flashing windows that appear and quickly disappear with each invocation.

Release AY047 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

The BSYSCALL block and SYSCALL statements now wait for completion of the program they invoke. Prior to this update, GPSS/H failed to wait for completion programs that did not display any windows.

Release AR217 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

An inconsistency between information written to .OBH files by "full" versions of GPSS/H and the information expected by Run-Time GPSS/H has been corrected.  Users who do not make use of .OBH files are not affected by this update.

Release PR216 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

A bug in the CHARSTOF built-in function, which converts character strings to floating point values, has been fixed.

Release UG175 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

A number of general  improvements have been made to security key interrogation.  Users who use more than one security key on the same machine should now see more logical behavior in the merger of product permissions and license dates retrieved from more than one key.

In addition, a number of cases in which GPSS/H still required uppercase text have been modified to allow both upper and lower case text.  GPSS/H has accepted mixed case input for quite some time.  See the GPSS/H System Guide for details.

Release AY135 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

A problem with interrogation of OEM project-specific security keys has been cleared up.  If you don't know what this means, this update does not affect you.

Release AR155 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

Diagnostic support for user-supplied DLL functions (GPSS/H External Ampervariables) has been significantly improved.  For example, if a user-supplied DLL function performs a division by zero or tries to write to protected memory, GPSS/H will now produce a mini-dump that shows the instructions surrounding the error, along with register contents and other information.

Release CT244 of GPSS/H requires a license date of December, 2001 or later.  It includes the following additions/updates:

GPSS/H session windows are now implemented as Windows "console applications".  This provides better screen rendering performance, and under Windows 2000 and XP permits the use of windows larger than the old 25-line, 80-column, DOS-style windows.  For complete details, click here.

External Ampervariables are now supported by means of Windows Dynamic Link Libraries (DLLs).  For details, click here.

For a complete description of the features included in latest version of GPSS/H, click here.