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The Raspberry Pi Pico microcontroller talks to the Intel 80C188 as an I/O device using its PIO - Programmable I/O block.
You will see:
- all my fixes I've made to my Slador188 computer's PCB
- how the Pico is connected to the address/data bus of the 80188
- detailed explanation of how the PIO programme talks to the Intel CPU via the GPIO pins
- how to initialise the PIO and use its interrupts to transfer data between the GPIOs and the ARM core
- how to handle the interrupts from the PIO in the C code running on the RP2040 ARM core
- the tests where we use the Pico as the Intel CPU's I/O peripheral device
Visit my webpage https://slador.uk/ to find the list of all my videos and all the supporting materials.
You can find there schematics of this computer at every stage of building it during the videos as well as the source code of all the programmes I write for this series.
https://www.slador.uk/