Metropolitan legend or esoteric spec?

[Framiga]

Hi all,

i've heard some time ago, a guy (known as a technician) told me that a 68060@50 Mhz CPU, works internally at 100 Mhz so like a 68040@25 Mhz works internally at 50 Mhz.

So we all know, that a 060 has a clock oscillator at 1:1 ratio while a 040 has 1:2 one.

Any comment?

Ciao

[Framiga]

Wow! a lot of answers!!!

In datail:

A couple of years ago, i've downloaded from Aminet, a program (don't remember wich).

In the readme file, there was the config of the author that said:

A2000 with A2060@100 Mhz.

From this info, i've done the question in the previous post.

Have you ever heard something similar?

Ciao e grazie

[Framiga]

Take a look here:

http://www.emulation.com/catalog/off-the-shelf_solutions/production-test_adapters/upgrade_motorola/

$ 296.40 ea. is a little bit expensive!

Ciao

-edit- Yes, you were right!

All MC68040 are clocked doubled processors. Thus a advertised 25MHz 68040 processor has actually an internal clock speed of 50MHz and an external clock speed of 25Mhz.

[Framiga]

The MC68040-25 works inside itself (internally), at 50 Mhz if  externally clocked with a 50 Mhz oscillator.

Externally (to RAM and so) works at 25 Mhz.

No info about tha MC68060 one.

Ciao

[Framiga]

Thanks for the useful reply!

By the way the guy that has reported on its program readme, an A2060@100 Mhz, was "in theory" right? or was jokeing?