I found two almost identical chips with
no trace of markings re: the 68HC05. I assume Apple
made sure these were not going to be confused for
Motorola's brand.
Apple probably bought the 68HC05 core from Motorola as a macro to its
design automation system, and then had whomever make the
That's because it has ROM code in it that
is protected by copyright, just like the system ROMs.
The circle M protects the microcode (firmware, in most cases). The
circle C protects the overall chip.
If Apple bought the microcontroller macro, then there could be no
circle C for the
Hi Roger/Clark or any interested party,
I can't locate the 68HC05 microprocessor chip. I
searched on both the logic and the PMU boards. Please
indicate where it might be or how to identify it.
Thanks
George
--- George Mogiljansky [EMAIL PROTECTED] wrote:
Thanks, Clark. I am very fortunate to
George,
The chip is labeled PMU it is a square high denisity chip on the center
left of the top side of the logic board. I also have a Xerox of the
topside of the board that I will mail to you, but need a snail mail
address, my scanner is too small for it.
Roger
George Mogiljansky wrote:
At 6:21 AM -0700 5/7/04, George Mogiljansky wrote:
Hi Roger/Clark or any interested party,
I can't locate the 68HC05 microprocessor chip. I
searched on both the logic and the PMU boards. Please
indicate where it might be or how to identify it.
Thanks
I've never seen one on a Mac, I'm just
Thanks, Clark. I found two almost identical chips with
no trace of markings re: the 68HC05. I assume Apple
made sure these were not going to be confused for
Motorola's brand.
Well, I'm no further ahead. But it's the journey that
counts, not the destination - or something like that.
Best
George
