v2.19.0

Firmware changelog:

Expanded interrupt support. SummerCart64 now can signal via cart interrupt the following events:
- Button press.
- Command finish.
- USB data waiting to be received.
- AUX register waiting to be read.
Added new AUX register and AUX_WRITE USB command as a simple message link between PC and N64.
Expanded PI I/O debug information - in addition to the last accessed address, transfer length and direction are also reported.
Added CIC debug information - currently executing function in the CIC code is reported.
CIC delays are now synchronized with N64 clock and reset time is exactly 500 ms.
Improvements to the USB reset process to make it more reliable.
RTC improvements:
- Added ability to set the century, starting at year 1900.

Expanded interrupt support. SummerCart64 now can signal via cart interrupt the following events:
- Button press.
- Command finish.
- USB data waiting to be received.
- AUX register waiting to be read.
Added new AUX register and AUX_WRITE USB command as a simple message link between PC and N64.
Expanded PI I/O debug information - in addition to the last accessed address, transfer length and direction are also reported.
Added CIC debug information - currently executing function in the CIC code is reported.
CIC delays are now synchronized with N64 clock and reset time is exactly 500 ms.
Improvements to the USB reset process to make it more reliable.
RTC improvements:
- Added ability to set the century, starting at year 1900.