Release_4.5

Summary of changes:

• Significant performance improvements to CLCLE, CUSE, TRE, TRTE, TRTR and TRTRE instructions (#498, #500, #510, #513, #519, #520) (Thank you James Wekel!)
• Fix minor bug in STSTU (Search String Unicode) instruction
• Fix minor bug in CMPSC (Compression Call) instruction
• Fix minor bug in PFPO (Perform Floating-Point Operation) instruction (#407)
• PER 1 GRA (General Register Alteration) support (#87)
• z/VM TXF PER support (i.e. TXSUSPEND = Event Suppression)
• PER SKEY support
• PER Zero-Address Detection support
• BEAR-Enhancement Facility support
• Decimal Floating-Point Packed Conversion Facility support (#496)
• Report and ignore oversized LCS outbound SNA messages
• Ensure same serial number on all multi-file images (#276)
• Fix minor dasdinit negative size parameter bug (#472)
• Fix minor dasd CCW data-chaining bug
• Improve CCKD handling of unusual/unexpected errors
• Minor corrections to CTCE documentation
• dasdls: sort display by dataset name
• Various minor cckdmap enhancements
• Fix rare bug in .HET locate block logic (#518)
• Disable CCKD automatic garbage collection (#504)
• Fix hang at exit when MLVL DEBUG is active
• Fix bug causing DASD corruption with s+ tracing
• Fix 'numcpu' handling bug causing crash (#481)
• Ensure error message when no config file provided (#483)
• Fix another possible Windows suspend/resume crash (#489)
• Customized Offerings Driver (COD) support
• New SYSGPORT config file statement (#505)
• Various improvements to Linux build scripts (#454, #461)
• Many other various minor miscellaneous fixes and improvements to both documentation and code

Release_4.4.1

Summary of changes:

Please refer to the Release Notes for important information.

• Implement new Version string format
• Return fullword #of cylinders in RDC bytes 60-63 (#456)
• Also show real address for virtual address during instruction tracing
• Fix possible Hercules crash after resume from suspend (#458)
• Improved B220 (SERVC) instruction validation (#460)
• Fix 20 yr. old CCKD compressed dasd bug causing Locate Record to fail (#464)

Release_4.4

Summary of changes:

Please refer to the Release Notes for important information.

• Fix many SIE arch-dep violation bugs
• Fix to SIE handling of STFL/STFLE instructions
• Internal and SIE SKA Storage Key handling fixes
• Fix VM/ESA OPERATOR userid looping bug
• Preliminary SIE ESSA/STHYI instructions support
• Fixes to MVS assist support (#391)
• ECPS:VM 1.88 fixes
   
• ISK/ISKE, IVSK, RRB/RRBE, SSK/SSKE, RRBM, PFMF instruction fixes
• Fixes to CSP/CSPG/IDTE/IPTE instructions
• Minor LAA/LAAG (et al.) instructions fix
• RRBM instruction fix
• PTFF instruction support for function codes 04, 05, 69 (#363)
• Fix DAT bug in MVCOS instruction (#349)
   
• Local-TLB-Clearing Facility (#77)
• Nonquiescing Key-Setting Facility (#77)
• Insert Reference Bits Multiple Facility (#77)
• Miscellaneous-Instruction-Extensions Facilities 2 and 3 (#77)
• PPA-in-order facility (#77)
• Allow modifying "IBM" and undefined facility bits (#353)
   
• LCS device fixes and improvements
• LCS device SNA support (#348)
• 3270 device connection improvements (#379)
• CTCE device fixes and improvements (#369)
• CTCI device fix for VSE (#446)
• Minor QETH (OSA) device fixes/improvements
   
• CCKDMAP utility CFBA/CFBA64 device support
• Fix to DASDLS utility shadow file logic (#393)
• CCKDLOAD utility fix (#374)
• Fix dasd utilities r/o access to r/w images (#355)
• Minor "faketape" emulated tape format fix
• Fix possible CRASH during compressed dasd attach/detach
   
• PANOPT statement "MSGCOLOR" option
• PANRATE/PANTITLE replaced by PANOPT
• Minor MODEL/PLANT/MANUFACTURER statement fixes
• New -o/--output/--logfile command-line options
   
• Hardware loader fix (#185, #337)
• Minor Rexx support fixes and improvements
• Minor External Packages updates
• Fixes to herclin.exe
• Translation Specification PIC 12 fix
• Improved TXF reliability and completeness
• Predefined CPUMODEL $(symbol) values (#263)
   
• Improvements to building Hercules on non-Windows platforms
• Improvements to building Hercules on Windows platforms (#448)
• Many other minor internal/external fixes and improvements

Release_4.3

Summary of changes:

Please refer to the Release Notes for more information.

• Fix ULONG_PTR typedef build errors on RHEL 6.10 (#245)
• Add missing 3203 printer to DEVEQU table (#250)
• Fix driver code incompatibility with other Herculeses (#251)
• Fix issue where thread names are incorrectly set (#254)
• Fix missing timestamp in daemon mode; add DATESTAMP option (#259), (#260)
• Fix CNSLPORT to honor new updated setting (#318)
• Watchdog monitoring reinstated.
• New PANOPT option MSGCOLOR=DARK/LIGHT
• Fix hang/deadlock in device-attention function (#277)
• Improved CTCE driver functionality (#269), (#273)
• TCPNJE device support. Refer to the README.TCPNJE document for details (#280)
• TCPNJE Connectivity And Stability Enhancements
• Fix RARP (Reverse ARP) Ethernet frame type constant
• Fix Linux panel high CPU usage (#289)
• Fix z/VM guest architecture switching (#295)
• Fix for IPL command without a LOADPARM (#296)
• Work around VS2019 compiler C4789 Warning bug.
• Fix crash if incomplete network device group defined.
• Fix ooRexx v5.0.0. load failure on Apple Mac (#301)
• Fix crash in CCKD dasd termination logic (#303)
• Fix KIMD instruction
• Fix VM FixPage assist
• Fix channel prefetch buffer overrun crash (#319)
• Fix instruction stepping invalidation/refetch bug (#321)
• New z15 Secure Boot (Secure IPL) Diagnose 0x308 support
• Preliminary (Experimental) Transactional-Execution Facility (TXF) support (#263)
• MANY other internal fixes and improvements

Release_4.2.1

Summary of changes:

Please refer to the Release Notes for more information.

• Make HHC02917 a suppressible msglevel debug only message
• Fix CKD suffixed read count file protect bug
• CKD dasd serial number support
• New "dasdser" serial number utility
• Fix various VMFPLC2 issues
• Fix Linux exit/quit hang when no traffic on tuntap device
• Fix QETH (OSA) missing CSCH interrupt under z/VM
• Don't pass "&&" async argument to rexx scripts
• Fix bogus HHC01111W warning and cctape display
• hercifc network interface configuration utility fixes
• SIE fix for z/VM z/Arch real mode guests (e.g. zcms)
• Various important 3215/1052 console fixes
• Various other minor internal fixes and improvements

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)