Hi guys,

I'm working on something that I am pretty sure sucks too much juice to be
powered by the icd2 during debugging.  It is an 18f452 controlling an PPI
(8255) used to interface an IDE disk drive.

I've gone through the icd2 documentation but wanted to be extra sure that
I have the right idea before I running the risk of damaging something
expensive, such as the icd2 or worse, the new laptop it is connected to.

Basically, I should connect the icd2 ground to the circuit ground, connect
the PIC to the +5v and the rest of my circuit to it's own regulated +5v. 
This is what I believe is the right way to do it.

But, the other way to do it, the way I do not believe to be correct, is to
have the PIC connected to the same +5v as everything else, but not the
icd2 +5v, and connect the circuit's ground and the icd2 ground together.

Beautiful, Picasso-like ASCII art follows:

GOOD (only power signals shown)
         +5v               +5v
          |                 |
|------|  |  |-----|    |-------|
| ICD2 |--+--| PIC |    | other |
|------|     |-----|    |-------|
  |             |          |
  +-------------+--------- +
  |
 GND

BAD (only power signals shown)
                                  +5v
  +5v                              |
   |      +------------------------+
   |      |                        |
|------|  |  |-----|    |-------|  |
| ICD2 |  +--| PIC |    | other |--+
|------|     |-----|    |-------|
  |             |           |
  +-------------+---------- +
  |
 GND


Thanks.


-Mario
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