(MESS) bw2: Fixed memory mapping. (nw)
(MESS) msm6255: Refactored to use device_memory_interface. (nw)
(MESS) floppy: Added macros for declaring modern floppy formats. The generic floppy formats (D88/DFI/IMD/IPF/MFI/MFM) are now automatically supported in each driver using the modern floppy code. [Curt Coder]
types. Created a binding_type_exception which is thrown when
a bind attempt fails due to mismatched types.
Added helper templates to driver_device to wrap legacy
device read/write handlers into driver_device member functions.
This should help move some things forward until more common
code is converted into proper devices.
Introduce new module devcb2 which contains modernized
versions of devcb. Compared to previous implementation
this one is simpler overall, trampolining calls through
a single internal set of adapter functions. The new
versions are also designed to be specified in the
machine_config rather than in structures, so they are
no longer simple POD types. Additional new/changed
features:
* reads and writes can map to delegates for line or 8/16/32/64-bit
* reads and writes can map to an I/O port
* reads can be mapped to a constant value, with or without logging
* writes can be mapped to a device's input line
* all reads/writes can have a shift, mask, and/or xor applied
* devices can opt to make the functions safe-if-NULL when resolving
* only member function types are supported
Rewrote the YM2151 interface to be fully modernized, and
removed the ym2151_interface struct in favor of inline configs
using the new devcb2 mechanism. In many cases, removed
no longer needed trampolines, instead taking advantage of
direct support for input line writes.
Remaining TODO list:
- take WP into account
- test the amstrad, implement its observational format (edsk) using
pasti as a start. Or find the legendary amstrad IPFs. Or both.
- correct read track, the implementation is completely wrong. See
previous for testing, it's only used in protections the check the
inter-sector gaps.
- shake and bake on the amstrad, protections are the best to find bugs
in a fdc
- add the scan id commands, but nothing seems to use them
- debug the 2.88M formatting which is unreliable. Fix its IDAM/DAM
gap size on formatting too (but that's not what's making it
unreliable)
- test all the systems that were hit, and fix what needs to be fixed.
Beware that multiple problems may happen:
- upd765 may be wrong
- the driver may not be working
- the hookup may be wrong/incomplete (bitrate selection and floppy
rpm in particular)
- the driver may be too limited for the new implementation (the x68k
dma device does not handle non-instant dma yet for instance)
- report invalid command when appropriate depending on the actual chip
emulated
- add the russian clones with their real names
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]
READ/WRITE_DEVICE*_HANDLERs are now passed an
address_space &, and the 8-bit variants get a mem_mask
as well. This means they are now directly compatible
with the member function delegates. Added a generic
address space to the driver_device that can be used
when no specific address space is available. Also
added DECLARE_READ/WRITE_DEVICE*_HANDLER macros to
declare device callbacks with default mem_mask
parameters. [Aaron Giles]
