- Much improved CS4031 emulation, added DMA, interrupt controller, timer, RTC directly to the device as sub devices and added the generic functions needed for AT compatibility
- Moved the ct486 driver to its own file, to avoid all the legacy stuff in at.c
- Added support for the IOCHCK signal to the ISA bus, this is used instead of directly issuing an NMI to the main CPU
- Moved ISA device slot definitions to its own file to avoid copy & pasting the same list to different drivers
- Updated MC146818 RTC for devcb2
device_memory_interface::space() assert against NULL and
return a reference, and pushed references throughout all
address space usage in the system. Added a has_space()
method to check for those rare case when it is ambiguous.
[Aaron Giles]
Also reinstated the generic space and added fatal error
handlers if anyone tries to actually read/write from it.
read/write handlers to take an address_space & instead
of an address_space *. Also update pretty much all other
functions to take a reference where appropriate.
[Aaron Giles]
