🚀 go-pugleaf

From article <17583@glacier.STANFORD.EDU>, by jbn@glacier.STANFORD.EDU (John B. Nagle):
> 
>       Does Intel, or someone else, make a microcontroller that executes
> 808x instructions and comes with many useful on-chip peripherals, such
> as timers, A/Ds, and such?  I'm aware of Intel's various strange micro-
> controllers, but I'd prefer something that was reasonably PC compatible.
> 
Yes, the best bang for the buck is the 80186 at about $9 in quantity
for the 8 mHz version.  Although it does not have any A/D capabilities,
it has 3 16-bit timers (2 can be cascaded), interrupt controller, 2 DMA
channels (which can be driven by timer2), clock generator, programmable
memory and peripheral chip select logic and programmable wait state
generator.  We use the 16mHz version for our VME based 8 serial port
peripheral controller.  Supports the 808x instruction set as well as
some nifty extensions.  Address calculation is the same regardless of
how complex (base + index + constant...) (not like the 808x which has
different number of cycles depending on addressing mode).  Most of the 
standard language compilers for 808x support 80186 code generation and
if they do not, the 186 runs 808x directly.  The only differences will
be in how the actual hardware is set up, and since it appears that you
are doing embedded development, you must be hardware specific in each
new environment anyway.  Host-based simulators and separate In-Circuit
Emulators are available from many different companies.  For the price,
you can easily glue on some external A/D chips (we do this for audio
output generation).


	Dion Hollenbeck             (619) 455-5590 x2814
	Megatek Corporation, 9645 Scranton Road, San Diego, CA  92121

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