This now works with both single density and double density floppy disks, and
dynamically identifies boot sector IDs required for 6800 booting, and supports
writing back to the 'dsk' image files.
The UniFLEX disk format is not compatible with the Flex format. Significantly it
does not use a mix of single density for booting on some double density disks
which makes it simpler - hardware required a new boot ROM to run UniFLEX.
Further, the UniFLEX sector size is 512 bytes versus 256 for Flex, and the
UniFLEX 'SIR' info sector record is completely different to the info on Flex
disk, and the file system format is also not at all compatible.
Thus the UniFlex format can rely largely on the WD17xx format, with an
overload to handle the sector numbering on the second side continuing from the
first side (one feature in common with the Flex format). This gives a quick
'save' capability and shares code.
Support for 8" disks is included as this was the initial distribution format
and the only one found so far.
Some machines do not connect the SSO output to control the floppy side. When
this new callback option is used the wd_fdc no longer controls the floppy,
rather calls the SSO callback.
z80 was tested with pacman and m6502 was tested with apple2e.
Side-effects must be disabled before reading memory, otherwise apple2e
starts failing after the first read to 0xc080.
Since GDB doesn't support those processors, I made up the features name
with "mame.<cpuname>". I also had to choose the registers to export in
the target.xml file, and since I don't have any experience with these
processors I don't know if I made the best choice.
* gdbstub: added new GDB stub debugger
This debugger can be used to connect to an external debugger that
communicates using the GDB Remote Serial Protocol, such as GDB itself
or many other GDB frontends.
Currently i386 (ct486), arm7 (gba), and ppc (pmac6100) are supported.
* gdbstub: enable GDB stub debugger in mac and windows builds
- Replace the old-style fake I/O space with callbacks
- Add address spaces to handle remappable accesses to internal RAM and registers
- Eliminate set_config in favor of separate device types for each model (not differentiated properly yet...)
