Fix MT06964
Fix µPD7759 class hierarchy, and reset callback before resolving it
(fixed assert in Sega C2)
Remove some more low-value device add indirection macros, default some
more clocks
Make cards inherit clock from slot by default
Start replacing special device macros with additional constructors,
starting with ISA, INTELLEC 4 and RS-232 buses.
Allow an object finder to take on the target of another object finder.
(For a combination of the previous two things in action, see either the
INTELLEC 4 driver, or the Apple 2 PC Exporter card. Also check out
looping over a device finder array to instantiate devices in some
places. Lots of things no longer need to pass tags around.)
Start supplying default clocks for things that have a standard clock or
have all clocks internal.
Eliminate the separate DEV versions of the DEVCB_ macros. Previously,
the plain versions were a shortcut for DEVICE_SELF as the target. You
can now supply a string tag (relative to current device being
configured), an object finder (takes on the base and relative tag), or
a reference to a device/interface (only do this if you know the device
won't be replaced out from under it, but that's a safe assumption for
your subdevices). In almost all cases, you can get the effect you want
by supplying *this as the target.
Eliminate sound and CPU versions of macros. They serve no useful
purpose, provide no extra checks, make error messages longer, add
indirection, and mislead newbies into thinking there's a difference.
Remove a lot of now-unnecessary ":" prefixes binding things relative to
machine root.
Clean up some miscellaneous rot.
Examples of new functionality in use in (some more subtle than others):
* src/mame/drivers/intellec4.cpp
* src/mame/drivers/tranz330.cpp
* src/mame/drivers/osboren1.cpp
* src/mame/drivers/zorba.cpp
* src/mame/devices/smioc.cpp
* src/devices/bus/a2bus/pc_xporter.cpp
* src/devices/bus/isa/isa.h
* src/devices/bus/isa/isa.h
* src/devices/bus/intellec4/intellec4.h
* start looking at the extra opcodes in the SSD 2000 type XaviX chip (seems some undocumented 6502 opcodes are replaced with more custom ones)
* (nw)
* the xavix memory mapping gets stranger with each piece of new evidence (nw)
- High level emulation of serial keyboard (only sort of works; probably should be less sophisticated)
- Add double height and double width attributes
- Adjustable start of screen pointer (necessary for SET-UP mode)
- Reconfigure screen for 80/132-column and 50/60 Hz modes
dikeyboard: Add scan_complete callback (nw, sort of hacky but cit101 keyboard works worse without it)
