Devices now have a 'path' member, which usually points to a ROM file, or loader script.
No more 'available' functions unless one is needed for special cases.
Machines now can be 'configured' for mainboard settings etc.
Machines are now devices as well (root devices).
Regular devices now get a pointer to a 'parent' device.
The machines table has been reduced to just a lookup table, machine info is now inside the machine file.
Machine-specific CPU lists are now inside the machine file.
Chipset implementations are now devices, and were moved to devices/chipsets/
Much work on individual machines done.
All COMPAQ machines moved to dev-branch.
Zenith SupersPORT moved to dev-branch.
The i686-based machines (Tyan) released from dev-branch and cleaned up.
Several new MFM and RLL disk controllers for XT, in dev-branch for now.
Upstream fixes for ET4000* cards (also for TSX-32, and others) with scrolling issues.
Upstream fixes for mem.c (fixes remapping issues for ET4000 et al.)
Important change to the NVR code to "fix" the PS/1 and PS/2 systems, plus a cleanup.
All device tables now end with a NULL, not an empty string.
Configuration code now deals better with this.
Machine and Video lookup now return -1 if not found/available, and pc_init() will throw the user into Setup if that is the case.
If for some reason the configured memory size exceeds machine limit, it is now adjusted.
Converted AT NVR to be a device, so it gets auto-closed.
Added new machine_close() function which calls optional machine-custom close, updated machine table.
Small fixes here and there.
Re-wored the CDROM code to have a 'speeds' table instead of ugly hard-coding.
Changes to the memory manager reduced by 120MB for machines with CPU < 80386.
Changes to the 86F diskette data processor (required by all floppy controllers) reduced by 330M.
Test machine OpenXT now runs at 240MB, instead of 680MB.
