MULTIPROCESSING FOR THE IMPOVERISHED Part 1: a 6809 Uniprocessor

[ben]

On 8/6/2019 6:38 AM, Norman Jaffe via cctalk wrote:
> I built a dual-6809 in the late '70s - it was a brand-new, exciting part - and we used the E part for exactly that reason. The system used memory that had an access time that was better than the 4x clock, so that each processor could run at full speed.
> 
It was too bad the 6809 did not have a pin to indicate Instruction or 
Data memory bank in use. That would of given a real unix system in the
8 bit world, as by then (late 70s) 64kb was proving just to small for
any real use.
The 68000 was the only real 16/32 bit cpu out at time, but nobody could 
afford it.
Ben.