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* New working systems Nigel Barnes2024-11-281-3/+2
| | | | | | | | | | | ------------------- MC 400 [The Last Psion, Nigel Barnes] New working clones ------------------ MC 200 [Nigel Barnes] MC Word [zedstarr, Nigel Barnes] MC Word (German) [The Last Psion, Nigel Barnes]
* machine/psion_asic2.cpp: Added indexed control registers. Nigel Barnes2023-07-221-30/+156
| | | | | | | | machine/psion_asic3.cpp: Re-implemented as two variants, ASIC3 and earlier ASIC5 based PSU devices. machine/psion_asic5.cpp: Implemented UART and interrupts. machine/psion_asic9.cpp: Added PCM sound I/O.
* emu/devcb.h: Eliminated the need to call resolve() on callbacks. (#11333) Vas Crabb2023-06-171-13/+1
| | | | | | | | | | | | Read callbacks now need a default return value supplied at construction. Replaced isnull() with isunset() which tells you if the callback wasn't configured rather than whether it isn't safe to call. Enabled validation of device callbacks (it seems it was disabled at some point, probably accidentally). Device callbacks and object finders now implement the same interface for resolution.
* New systems marked not working Nigel Barnes2023-05-171-0/+188
------------------------------ Series 3 [Nigel Barnes, The Last Psion] New clones marked not working ----------------------------- Pocket Book [Nigel Barnes, The Last Psion] Series 3s [Nigel Barnes, The Last Psion]