- 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