Log Message:
emulators/open-simh: update to 4.0.0.20220814

Various fixes and updates, including

SCP: Fix details missed when merging update REGister macros from v3.12-2
QBus VAX and PDP11: Add support for HDLC framing to DUP11/DPV11
SCP: Add parenthesis to avoid potential compiler warnings
KA10: Updated documentation for PDP10 simulators.
KA10: Added default disable for devices that could be on KL10.
KA10: IMP Code support for Tenex.
KA10: Fixed DK10 to properly interrupt.
SCP: Fixed bug in byte deposits if aincr > 1
QBus VAX and PDP11: Add support for DPV11 in DDCMP mode
Sample stub simulator.
Unibus and Qbus VAXen: Add DUP-11/DPV-11 device
PDP11, Qbus & Unibus VAX: Extend DUP device for DECnet Phase V support