alkopop79 wrote:
I reckon I can hook up my microcontroller dev board to the Rockwell processor and 'fake' instructions. Both the SBC-2 and the UK101 lack keyboard and display. I wonder if it's possible to hook up a hex keypad and an LCD display to both? I just don't fancy the idea of having to use a 10000x times more powerful laptop to be able to use the SBC. Also, found a cheap (approx. £18) Willem burner, made in Canada on Ebay.
I made myself a interface for that. I took a pic16f877, and i used the parallel slave port, and when the cpu writes a byte to it, the mcu displays it on the lcd display(with the regular Hitachi controller), and when the cpu reads the mcu it outputs the pressed key on a ps/2 keyboard. The only tricky part is that you can't read or write data in a thigh loop, because the mcu would get too much interrupts, and it couldn't handle then all on time, so i just added nop instructions after every read/write to the mcu port, and it works perfectly. I never set the code for download, since i never finished the i2c part that is supposed to communicate to the rtc chip. If you want i can send you the code, source and hex, and just program the mcu with it and it works.
I also used it in my 68k sbc, and it works there too.