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* emu/devcb.h: Eliminated the need to call resolve() on callbacks. (#11333) Vas Crabb2023-06-171-5/+0
| | | | | | | | | | | | 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.
* emu/device.h: Removed device (READ|WRITE)_LINE_MEMBER in favor of explicit ↵ MooglyGuy2023-06-011-4/+4
| | | | function signatures. (#11283) [Ryan Holtz]
* devices/machine: simplified more handlers (nw) Ivan Vangelista2020-03-251-4/+4
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* hp80: HP82939 serial I/O module added (#6366) fulivi2020-03-011-45/+18
| | | | | | | | * hp80: added HP82939 serial I/O module. Fixed a small bug in INS8250 that prevented module self-test to pass. Improved the interrupt handling of hp80 systems. * hp80: changed scheduling to use "set_perfect_quantum"
* hp85: address issues raised by cuavas to PR #2749 fulivi2017-11-031-4/+4
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* hp85: support for I/O slots added. Emulation of HP82937 module added. fulivi2017-10-251-0/+295