Re: Argosy HD-363N -- UPDATE

Incidentally, this part also includes an Ethernet Mac. The app note
makes it look awfully like an Intel design from the same era as the
80186, so I assume it's the same part re-implemented as a core.

--Tim

Michael Wagner wrote:

> At 2/13/05 02:34 AM  Sunday, Tim Hill wrote:
>
>> The R2881 is an RDC 2800 series RISC cpu that emulates the 80186 CPU (a
>> real-mode only x86 processor, roughly between an 8086 and an 80286).
>
>
> From: http://www.cpu-world.com/CPUs/80186/
> Year: 1982
>
> Intel 80186 microprocessor, sometimes called i186, is an enhanced version
> of Intel 8086 16-bit processor. Being completely object code compatible
> with the 8086, the 80186 integrated many system components into one chip,
> added 7 new instructions, and added new operand types to three existing
> 8086 instructions. With the exception of integrated components, the Intel
> 80186 microprocessor is not very different from the 8086, and, because of
> this, the 80186 may be considered as an embedded version of 8086. The
> 80186
> didn't even have its own version of co-processor and worked with Intel
> 8087. Although the Intel 80186 was not widely used in the computers as
> the
> 8086 and 80286 did, it was successful in embedded processor market. In
> fact, the processor was so successful, that many different versions of
> the
> processor were introduced over last 20 years - 80C186 (new features),
> 80186EA, 80186EB, etc. At this time (November 2004) some of these
> versions
> are still in production.
>
> More about the architecture here:
> http://www.cpu-world.com/Arch/80186.html
> I very briefly programmed one of these as a hobby for a while in the
> early
> '80s. I think I even hacked on a C code generator for it. Reading this
> over, I'm pretty sure Tim is right. Nothing current from M/S would run on
> this base.
>
> It seems a lot of embedded & RTOS (real time) systems are available for
> these chips. And they're cheap, which is what you want for a low-cost
> appliance.
>
> Michael
>
> http://home.cogeco.ca/~michaelwagner/personal-page.htm
> "All I wanna do is have a little fun before I die" Sheryl Crow
>
>