vboy.xml updates:
* Set width and endianness for all ROM regions
* Added width and endianness for SRAM, assuming all cartridges have 8k*32 SRAM for now
* Removed mirroring - this is an implementation detail
* Removed "slot" features - there's enough information to work this out anyway
bus/vboy updates:
* Made slot probe software part to determine cartridge type
* Made cartridges responsible for installing themselves
* Added support for arbitrary cartridge sizes, assuming simplistic decoding
* Added support for 8-bit and 16-bit SRAM on LSBs
* Added support for EXP space and INTCRO output
* Fixed SRAM not being loaded
bus/generic: added a helper for mapping non-power-of-two memory with simple decoding
cpu/v810: send I/O accesses to program space if I/O space is unconfigured
vboy.cpp: updated for changed slot and CPU code
bus/wswan: added notes
The Virtual Boy software list is still in pretty poor shape. It's
assuming all carts with SRAM have 8k*32, there are a bunch of feature
tags for ICs that don't actually give an IC type, making them useless,
3-D Tetris mentions a battery but doesn't have an SRAM data area,
Virtual Fishing refers to a HY6254ALLJ-10 which isn't a real part (I
assume it means HY6264ALLJ-10 which is an 8k*8 50µA standby SRAM).
