2 MEGA's writing on 1 display (I2T)

Projects Programming
1

For my new project I need 8 interrupts, because my MEGA only has 6 I’m planning on using 2 MEGA’s 2560.
When I use the I2T bus I still have 4 interrupts on both MEGA’s. ( I2C: pin20 (SDA) and pin21 (SCL) ; Interrupts: pin2, pin3, pin21, pin20, pin19, pin18)
Next step is writing some data from MEGA 1 on the first two lines of a 4line display, an MEGA 2 writes on the third and fourth line.
Communication from MEGA’s to display also with I2T.

My questions are:
Can it be done?
Is it been done?
Who did it?
Are the examples on the net?

2

Nearly all the I/O pins on the chips used in the UNO/MEGA can be used as interrupt pins but they require a little more work to use (or a library like this)

3

Thank I’ll look into that,

Are the newly made interrupts also as fast as the original one’s.
I need to read high resolution encoders so they have to be fast to keep up.