Release_4.2

Summary of changes:

Please refer to the Release Notes for more information.

• Load-and-Zero-Rightmost-Byte Facility
• Load/Store-on-Condition Facility 2
• Full PFPO instruction support
• Fix AR/SR/AGR/SRG instructions Condition Code bug
• Improved CKSM, MVST, CLST, SRST instruction performance
• Optimized CLCL instruction bugfix
• CSST instruction fix
• TCPIP X'75' instruction support
• Improved internal instruction count accuracy
• New Diagnose F09 (enhanced F08) instruction
• Fix long standing occasional crash in CCKD logic
• Fix Shared Devices slow disconnect
• CKD dasd suffixed Read Count bug fix
• CCKD64 support
• QETH/OSA devices HSCH/CSCH instruction fix
• QETH/OSA multiple IP address support
• Various QETH/OSA fixes
• Linux sockdev syn flooding fix
• Minor LCS Checksum / TCP Segmentation Offload fixes
• CTCT device support reinstated
• Tape autoinit fix
• 3590 Tape C2 Medium Sense CCW fix
• Various 3270 terminal handling fixes
• Automatic tn3270 IND$FILE efficiency
• Enhanced VMFPLC2 utility
• dasdpdsu utility fix
• Breakpoint/Stepping optional ASID parameter
• New PANOPT statement/command
• Linux crash dump support (no more machine checks)
• Many various overall reliability, stability and documentation improvements

Release_4.1

Summary of changes:

Please refer to the Release Notes for more information.

• Jay Moseley 'maketape' utility added to Hercules
• LRVR, LRV and LRVH eligible added to S37X Facility (Ivan Warren)
• Fix long standing SIE host addressing prefixing bug (Ivan Warren)
• External Package support simplified and fixed to support Raspberry Pi
• QETH (OSA) device support fixes (Ian Shorter, Peter Jansen)
• Various Rexx support fixes
• DIAG 204 (LPAR information) fix (Ivan Warren)
• SoftFloat external package updated to version 3e (fixes square root) (Steve Orso)
• Crypto support fixed to use cryptographically secure random number generator
• ECPS:VM 1.87 enhancements and bug fixes (Bob Polmanter)
• Instruction counting accuracy improved
• Fix ./configure so --enable-optimization always honored
• Fix dasdls crash
• Improved TELNET Terminal Type negotiations
• Fix min/max internal thread priorities
• Fixes to allow building on Apple MacOS (Enrico Sorichetti, Peter Jansen)
• Fix bad commit causing utilities to crash (Paul Gorlinsky)
• Performance of TRT, CLC, CLCL and MVCIN instructions vastly improved (Fish and Ivan Warren)