RX02 Emulator v2.02

Minor update to support running DEC ZRXBF0 diagnostic error free on PDP11 with an RX11 (INIT/DONE fix).
Compatibility comments about using IDE 2.x version. Updated comments about configurations that have been tested.
Added k(ill) command to menu to facilitate a software driven reboot of the emulator.

RX02 Emulator v2.00

Updated usage of precompiled .hex files using xLoader and avrdude tools; added links and examples. Added a new k(ill) command to the menu system to simulate the push of the reset button. The command causes the emulator to do a full power up reset/restart.

RX02 Emulator v1.99a

Updated BOM files for SMT v5 board (part number changes for JLCPCB) and added precompiled .hex file for lazy users. No code changes since last release, documentation files and/or support files only.

RX02 Emulator v1.99

Update some comments, remove legacy/unused TU58 code files.
No functional code changes, just update some comments.
Update PCB documentation files, restructure directories.
Add v5 SMT board files (sch,pcb,bom,jpg,3d).
Rename jlcpcb pick&place file correctly.

RX02 Emulator v1.98

Updated BOM .csv/.pdf files to fix some DigiKey part numbers and add the 'recommended assembly order' column for builders.

Updated Arduino source files to allow the Z command to set date/time as either YYYY-MM-DD HH:MM:SS or YYYY-MM-DD HH:MM

Added LED test at startup. No changes to RX drive emulator functionality.

RX02 Emulator v1.96

Minor update to allow compatibility to use the latest released SDfat library v2.2.0 code. Conditional compilation tests added to support the v2.0.6/v2.0.7 versus the v2.1.0/v2.2.0 releases as there were minor variable name changes in some method calls. No other changes.

Update: Fully regression tested on my PDP-11/44 RX211 and passes DEC ZRXFB0 functional test and DEC ZRXDC0 performance exerciser. Boots and runs RT11 v5.7 successfully. Changed status from pre-release to release.

RX02 Emulator v1.95

Updated interface data transfer macros to change setup/hold delays on serial data transfer from 62.5ns (1 clock) to 250ns (4 clocks) to support using a longer RX02 emulator to UNIBUS/QBUS/OMNIBUS interface 40p flat cable. Now tested and working with a DEC BC06R-12 12'/4m cable. Passes all the same tests as before. Slight performance impact (about 5% slower) on sustained data transfers. Generally not noticeable under normal operation.

Also added lab trace logs (OS console, RX02 emulator monitor console) for reference information of complete boot sequences of various operating systems (OS8, RT11, XXDP). Refer to the documentation/lab_trace_logs folder.

RX02 Emulator v1.94

Updated SDfat driver code to be compatible with the newer v2 series SDfat Arduino libraries. Using the older v1 series SDfat library is also still possible. Updated BOM .csv to add SparkFun microSD part number. Added schematic PDF of SparkFun microSD adapter.

RX02 Emulator v1.93

Updated release to add a few new sample disk image files for PDP-8 systems, and fix an issue when using the emulator under OS8 in RX8E+RX01 mode. Prior to this update, the emulator would throw an error if the 'double density' mode bit was set in commands under RX8E/RX01 mode. While technically this should be an error, early versions of OS8 (appear) to set the DD bit the same as the unit ID, so accesses to unit 1 would fail. This has now been resolved to ignore the DD bit when in RX8E+RX01 or RX11+RX01 modes. Only RX02 mode uses this bit.

RX02 Emulator v1.9e

Updated .csv BOM 40P header quantity from 4 to 3 per assembly