Additional 68HC11 Registers?

[William E. Miller]

Mike Pitts wrote:

> Hi all,
>
> I seem to have an ECU which has register addresses which go
> beyond what I have in my HC11 manual.  My manual list registers
> up to the CONFIG register at  (Register Base + $3F).
>
> But I am finding register-ish code setting locations such as
> (Register Base + $60).
>
> Does anyone know what registers exist beyond $3F??
>
> TIA,
> -Mike
> ==========================================
> Mike Pitts
> Delray Beach, FL
> mpitts at emi.net
> http://www.emi.net/~mpitts/mike.htm
> ==========================================

  I'm not sure 'bout this particular application, but if the chip is in
expanded mulitplex mode (external data/address bus), this space could be
mapped to another device above base+0x3f. This would save code space.

Bill
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