(Novice) Debugging timing-critical code

From: Ariel Cornejo (arielco_at_cantv.net)
Date: 07/22/04 

Date: 22 Jul 2004 11:38:47 -0700

Regards...

I need to code ISO-7816-3 (contact smartcards, data-link layer) in
some MCU but I'm still pondering my options.

I was thinking of simply using a couple of HC08's I've got handy,
but my concern is: Will I be able to log/trace what goes on at
9600/55000 bps? How? Right now I'm reading the section on Monitor
ROM for the HC08, but it looks quite complicated and it is probably
going to wreck the tight timing required.

Any thoughts/pointers?
Maybe I should dump the HC08 for something featuring BDM?

Background: besides typical x86 low-level asm proggies, I've used
68000s and Z80s (the original thing), asm-level too. Still, I've
always resorted to the Leds-and-Scope approach when it comes to
real-time response.

Thanx in advance...

Ariel Cornejo