All AppleJack controllers start in mouse emulation mode, behaving exactly like
ADB mice. Only upon receiving a Listen command on register 3 with handler ID
0x46 does the AppleJack switch protocols, albeit such a change consisting merely
of expanding register 0's buffer size to 4 bytes. In this state, the first 2
bytes remain defined as they are for an ADB mouse; the additional 16 bits carry
the respective states of each of the AppleJack controller's remaining 11 buttons
out of a possible supported 16.
For backward compatibility, honor both mouse clicks and shoulder button presses
on the host when considering the state of the emulated trigger buttons.
Add new GamepadButton enum with bits corresponding to AppleJack button bits.
Both the AppleJack controller and the SDL GameController coincidentally define
one d-pad, two shoulder buttons, four face buttons, and three system buttons.
This makes mapping modern game controllers to the AppleJack straightforward.
AdbMouse and AdbKeyboard are subdevices of the CUDA device alongside AdbBus.
This doesn't make sense because conceptually, ADB devices hang off of the ADB
bus, not CUDA itself. An ADB bus can exist without a CUDA present, for example
Egret on older 68K Macs and the PMU on newer Power Macs. Therefore, make the ADB
device list a subhierarchy of AdbBus instead. Add a new "adb_devices" property
belonging to AdbBus that can allow users to specify ADB devices on the command
line at machine creation time, independent of the emulated bus's host. Make this
property default to "Mouse,Keyboard" to preserve existing behavior.
Add New World ROM Layout notes.
Add New World Firmware version notes.
Add punctation.
Move mention of OF main fcode image from the Open Firmware kernel description section to the boot process section.
Shutdown will enter the debugger or quit depending on the execution mode.
Quit is different from shutdown since it is triggered outside the guest by using the host Quit menu item.
Allow the verbosity to be adjusted.
Allow logging to be sent to stderr even when running in interpreter mode.
Allow uptime (time since program start) to be disabled. This makes it
easier to compare logs across successive runs.
We may be transferring less data than can fit in a chunk, so we need
to ensure that xfer_cnt is clamped to 0 when transferring the last
chunk (otherwise it remains negative, and has_data() will return true).
It's also possible that the transfer size is bigger than a chunk but not
an even multiple of the chunk size, so we need to ensure that we don't
try to transfer a whole chunk in the last iteration.
More correctly initialize the device identification struct, to report
the maximum (word 47) and current (word 59) number of blocks that can be
transferred with READ_MULTIPLE and WRITE_MULTIPLE commands.
Fix post_xfer_action to write the actual data size that was written,
as opposed to an entire chunk (which may be larger).
1f2256ec81a/7ee8b9b2 were referencing a multiple_sector_count field,
but it was never set. This was resulting in an error being returned
(`READ MULTIPLE with SET MULTIPLE==0`).` We actually should use
`sec_per_block``, which bd16b7c69ee27 introduced.
Although being optional in ATA-3 and absent in >= ATA-4,
RECALIBRATE is issued by Open Firmware 3.1.1 during device
initialization. If it fails, the drive is considered non-bootable.
Now we got two classes: IdeChannel and MacioIdeChannel.
The former models a generic IDE channel so it can be used elsewhere.
The latter implements MacIO specific configuration register(s)
and interrupt signaling.
Last use of grab_return was removed in f204caa9079aa94d90e1a8ef650b845283c1d46a.
grab_breakpoint was added in 2bd717e2931cba5be3152f92b3cca5e82e446759 but
never used.
There's no reason for it to be a global, we always set it and use it
in instruction implementations, and we never read it directly.
Perhaps the compiler could optimize this away, but it's better to be
simpler (and also be easier to read).
