Commodore FujiNet needs help

Hi guys,

Jaime (_at_idolpx) Johnston and I (_at_tschak) have been grinding through the
commodore FujiNet (and Meatloaf code that underpins it) for months now,
trying to iron out things like the bus timing, and it's proving to be an
absolute nightmare to get timings right, working across all the 8-bit IEC
machines, and we could use some additional help to see why we are
occasionally blowing timings and the nature of why certain timing values
work well on some machines, and not on others.

The core of the IEC code, is specified here:
https://github.com/FujiNetWIFI/fujinet-platformio/tree/master/lib/bus/iec

While devices are specified here:
https://github.com/FujiNetWIFI/fujinet-platformio/tree/master/lib/device/iec

For anyone who wants to jump in and help, a FujiNet prototype device can be
quickly assembled using either a Lolin-D32-Pro, or ESP32-DevKitC-VE,
attaching the IEC cable to the appropriate GPIO pins.

Any help would be appreciated, we really could use some fresh eyes on all
of this.

-Thom