GPSS/H Updates

Note: On July 21, 2011, Wolverine issued a new baseline release of all of its products.    To get the latest version of GPSS/H, you must first install the July 21, 2011 baseline release. 

For details on how our updates work, click here.  To install the latest baseline edition, click here.

Release AN206 release of GPSS/H requires a license date of January, 2010 or later.  This update includes miscellaneous cosmetic improvements and brings GPSS/H up-to-date with the releases of other Wolverine products.no changes to GPSS/H, per se.

To download and install the AN206 Update, click here.

Release AN135 release of GPSS/H requires a license date of January, 2010 or later.  This update includes an improved update installation procedure, but no changes to GPSS/H, per se.

Release EC294 release of GPSS/H requires a license date of January, 2010 or later.  It increases the number of lines of interactive output history to 10,000, enabling users to scroll through vast amounts of output.

Release EP114 release of GPSS/H includes a number of improvements to security key interrogation.

Release AN271 release of GPSS/H requires a license date of December, 2004 or later.  It includes a number of fixes for problems encountered with Windows 7 command prompt sessions.

Release CT140 of GPSS/H requires a license date of December, 2004 or later.  It includes the following fix:

Steps have been taken to reduce failures to recognize Wolverine security keys.  Such failures were already rare on most systems, and such henceforth be quite rare.

Release AR040 of GPSS/H requires a license date of December, 2004 or later.  It includes the following fix:

Attempts to take the log of a non-positive number are now trapped and diagnosed properly.  Prior to this fix, the C library used by GPSS/H failed catastrophically when such errors occurred.

The OV289 release of GPSS/H incorporates miscellaneous updates and brings GPSS/H into sync with the November 28, 2009 baseline installation of Wolverine's products.  (Click here for an explanation of how our baseline installation works.)

Release OV289 requires a license date of December, 2004 or later.  It includes the following addition:

Character constants can now include "\" (backslash) characters to suppress the interpretation of "_" characters, which are normally used to continue the current statement on the next input line.

Release EP098 of GPSS/H requires a license date of December, 2001 or later.  It includes the following addition:

Security key drivers have been updated to fix a problem that occurred when certain models of laptop computers were unplugged from a docking station.

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 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.