20mhz 68030 cube?

NeXT Computer, Inc. -> NeXT Black Hardware

Title: 20mhz 68030 cube?
Post by: barcher174 on February 13, 2015, 02:41:13 AM
Hi all,

I was skimming through the "next bible" and read that the first release cubes had a 20mhz cpu, but that it was quickly changed to 25mhz. Has anyone ever seen one of these? Any additional information?

--
Brian
Title: 20mhz 68030 cube?
Post by: barcher174 on February 14, 2015, 08:34:02 PM
The Byte magazine Nov. 1988 article on the next cube has a logic board picture which includes a 20mhz 68030 CPU, so that confirms they exist. The article still states the spec as being 25mhz.
Title: 20mhz 68030 cube?
Post by: pergamon on February 15, 2015, 10:44:00 PM
Oh wow, good catch.  I've never seen one myself, but honestly I've never thought to check to see if any of the really old 030 boards I have is anything other than 25mhz.
Title: 20mhz 68030 cube?
Post by: eagle on February 16, 2015, 10:21:38 AM
I never heard of a 20 MHz, but my prototype (#104) is a 25 MHz.
Title: 20mhz 68030 cube?
Post by: gtnicol on February 16, 2015, 06:51:25 PM
I can't say I've ever seen one either, but like pergamon, it never occurred to be to check. Cube #7 was 25mhz... but the motherboard may have been swapped on that one.
Title: 20mhz 68030 cube?
Post by: Rob Blessin Black Hole on February 17, 2015, 03:02:51 PM
Quote from: "gtnicol"I can't say I've ever seen one either, but like pergamon, it never occurred to be to check. Cube #7 was 25mhz... but the motherboard may have been swapped on that one.

#4 was also a 68030 25Mhz from one of the first NeXT employees , I'll look through the brown boards and gold boards I have .
:shock:
Title: 20mhz 68030 cube?
Post by: pergamon on February 18, 2015, 11:24:54 AM
Yeah, I checked and both of my #7 cubes (http://www.nextcomputers.org/forums/viewtopic.php?t=3433) are 25mhz.
Title: 20mhz 68030 cube?
Post by: pergamon on February 18, 2015, 11:29:54 AM
Quote from: "Rob Blessin Black Hole"#4 was also a 68030 25Mhz from one of the first NeXT employees

Which label style is your #4, does it say "Computer" on the label underneath the NeXT logo or not?

Quote from: "Rob Blessin Black Hole", I'll look through the brown boards and gold boards I have .
:shock:

That'll be interesting to find out ;)
Title: 20mhz 68030 cube?
Post by: Rob Blessin Black Hole on February 18, 2015, 04:43:48 PM
Quote from: "pergamon"
Quote from: "Rob Blessin Black Hole"#4 was also a 68030 25Mhz from one of the first NeXT employees

Which label style is your #4, does it say "Computer" on the label underneath the NeXT logo or not?

Quote from: "Rob Blessin Black Hole", I'll look through the brown boards and gold boards I have .
:shock:

That'll be interesting to find out ;)

Hello: I don't recall if it said computer , interesting duplicate serial numbers perhaps the early internals didn't say computer as I have other serial numbers of early cubes without computer. May be  that would explain the embossing of personal mainframe on one as they were trying out different looks for the backplain. Best regards rob Blessin

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