This is about the 80C88 and AT91SAM9260 I bought. I had the idea of nannying it with a modern MCU that offers it a reference clock, a POR, power rail timing and USB to Serial link. Is this appropriate?
For the 80C88, the nanny MCU would be PIC16F1455, providing a 4MHz reference clock, a serial connection and POR sequence.
For the AT91SAM9260, the nanny MCU would be STM32F103CB, a serial connection over USB, POR and power sequence, and maybe a JTAG.