Attention 1802 fans...

Ethan Dicks wrote: WOW. One thing for still producing the chip: I bet they've amortized the development cost by now. :) Have they cranked up the clock rates or made any improvements, do you know? I know you can get a WDC 6502 that runs at 14 Mhz, (I'm running one at 6 Mhz and it isn't too shabby, speedwise, but I had to screen a fair batch of 6522s and 65C51s to get ones that operated reliably at this bus speed), so maybe there's a 200 Mhz 1802 out there? ;) That would be one heckuva road-trip. I was being silly of course. If you needed an 1802 for an existing design badly enough, and couldn't buy a new one, you could undoubtedly create a clone of it on an FPGA on a little PCB and a 40-pin DIP header. It can't be a lot of complexity as 8 bitters go. Another thing I recall is it was one of the few micros I knew of at the time that provided for easy tri-stating to take control of the bus, such as for DMA or even multiprocessing. Another legacy of being CMOS, I suspect. -- Ross