Date: Wed, 30 Nov 2005 18:19:05 -0500
From: Scott Stevens <chenmel at earthlink.net>
On Tue, 29 Nov 2005 23:59:42 -0500
"James Fogg" <James at jdfogg.com> wrote:
James
Fogg wrote:
My interests stop at the "classic"
Macs, of which the SE30 is the
height of engineering achievement (in my opinion).
Why? I know a bit of the classic Mac engineering history
thanks to Andy's retro website/book, but I know nothing of the SE30.
OK, neither do I (it's too late to argue). It is the last of the classic
Macs and has the greatest number of features and capabilities.
Actually it isn't the last of the Classic Macs in a certain sense. Apple
produced several other inferior compact Mac machines that aren't nearly
as expandable as the SE/30. The Macintosh Classic is an example of this, if
I'm not mistaken. The Classic can't sport anywhere near as much RAM as
the SE/30.
The SE/30 is essentially the IIcx with the NuBus slots sawn off and a
little (very little) video RAM and video circuitry added.
It was a nice machine. 16 MHz 68030 with fully 32 bit wide data and
address paths. Maximum RAM is 128 MB with eight 16MB 30 pin SIMMs.
Color capability is in the ROM, but requires one of the somewhat rare
video cards (SE/30 PDS slot) and goes to an external monitor.
The follow up models which had similar form factors were far
inferior. The Mac Classic really ought to be compared to the Mac
Plus or Mac SE (somewhat superior to the former and inferior to the
latter). The only thing the Classic had going for it is that Mac OS
6.03 is in the ROM, so you can boot with no available disk. It
*should* have had the Mac Portable memory map, so that it could
address 8 MB of RAM instead of only 4MB (24 bit address space) and a
speed bump from 8 to 16 MHz, but Apple didn't do that.
The Classic II was meant to be a follow up to the SE/30 but while it
has a 16MHz 68030 its maximum RAM is 10 MB and its data path is only
16 bits wide. Bleah. The Color Classic has the same problem, though
it does have a color screen.
The Color Classic II was better with 33MHz 68030 and 32 bit data
path. The Max RAM was still limited to only 36MB. However, that's a
72 pin SIMM socket with 4MB on the motherboard and Apple never
acknowledged that any of their 72 pin RAM machines would address
better than 32 MB per slot. Nevertheless many of their machines will
work with 64MB or even 128 MB 72 pin SIMMs, so the CCII may have a
much higher max RAM than reported by Apple.
If that's the case, then the CCII was a worthy successor to the SE/30.
Jeff Walther