13 Sep
2001
13 Sep
'01
9:09 a.m.
! >Isn't the SE an 030 Mac? The Plus is only a 68000.
!
! No, the SE was an 8mhz 68000 just like the plus. The SE was
! basically a
! newer plus (it had a built in HD or 2 800k floppies, ADB, an
! expansion
! slot, and a newer ROM). Later the SE was upgraded to having the
! SuperDrive (not the NEW superdrive that apple has recycled
! the name for,
! but rather the original 1.4mb drive that could read MFS, HFS,
! DOS, and
! ProDOS)
Properly known as the 'Macintosh SE FDHD'. Yep, I got one of these, running
OS 6.0.7, 50MB HDD, and 4MB RAM...
! There WAS an SE/30 that was a 16mhz (33mhz?) 68030... it was
! basically an
! SE, but with the faster processor and 8 simm slots rather than 4... I
! think THAT is the Mac you are thinking of.
Yeah, the SE/30 is a 68030, 16MHz; with 68882 FPU and 0.5K of L1 cache! Have
two of these, OS 7.1 and 7.0.1...
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- mailto:david.woyciesjes@yale.edu
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13 Sep
13 Sep
7:36 p.m.
David Woyciesjes skrev:
! >Isn't the SE an 030 Mac? The Plus is only a
68000.
!
! No, the SE was an 8mhz 68000 just like the plus. The SE was
! basically a
! newer plus (it had a built in HD or 2 800k floppies, ADB, an
! expansion
! slot, and a newer ROM). Later the SE was upgraded to having the
! SuperDrive (not the NEW superdrive that apple has recycled
! the name for,
! but rather the original 1.4mb drive that could read MFS, HFS,
! DOS, and
! ProDOS)
Properly known as the 'Macintosh SE FDHD'. Yep,
I got one of these, running
OS 6.0.7, 50MB HDD, and 4MB RAM...
I've got both kinds, one of which which is equipped with a 3Com Ethernet card.
Unfortunately, 3Com seem to have forgotten all about making such a beast, and
have even managed to reuse its model number on some PCMCIA card. =/
! There WAS an SE/30 that was a 16mhz (33mhz?) 68030...
it was
! basically an
! SE, but with the faster processor and 8 simm slots rather than 4... I
! think THAT is the Mac you are thinking of.
Yeah, the SE/30 is a 68030, 16MHz; with 68882 FPU and
0.5K of L1 cache! Have
two of these, OS 7.1 and 7.0.1...
Me too, but shouldn't that be a 68881?
--
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We have the most thorough test guy in the world...
I showed him this program and he asked,
'but Rob, what if time runs backward?'
14 Sep
14 Sep
4:59 a.m.
Iggy Drougge wrote:
68882 is right for 68030 & 68020. 68881 only foir 68020.
(talking about hardware, no software)
cheers
Yeah, the SE/30
is a 68030, 16MHz; with 68882 FPU and 0.5K of L1 cache! Have
two of these, OS 7.1 and 7.0.1...
Me too, but shouldn't that be a 68881? 
19 Sep
19 Sep
7:44 a.m.
New subject: MC68881 vs MC68882 (was Re: Mac Plus as a webserver...)
--- emanuel stiebler <emu(a)ecubics.com> wrote:
Iggy Drougge wrote:
68882 is right for 68030 & 68020. 68881 only foir 68020.
(talking about hardware, no software)
I _think_ the Amiga 3000/16 had a 16Mhz 68881 and the A3000/25
had a 25Mhz 68882, but I could easily be mistaken.
My memory is that the parts were interchangable in hardware (presuming
the speed was OK) but the performance was better at a given speed
for the 68882 over the 68881. I never did any rendering on my Amigas,
so my use of the floating point was rather limited. I skipped over
the '020 when I was heavily into Amigas, leaping from a massively
expanded A1000 (Rejuvinator, Spirit InBoard, Microbotics Starboard w/Star-
Drive, ROM switcher, etc.) to an A3000/25.
-ethan
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Yeah, the
SE/30 is a 68030, 16MHz; with 68882 FPU...
Me too, but shouldn't that be a 68881? 
12:41 a.m.
New subject: Amiga 3000 problem
Hi!
On 19-Sep-01, Ethan Dicks wrote:
I _think_ the Amiga 3000/16 had a 16Mhz 68881 and the
A3000/25
had a 25Mhz 68882, but I could easily be mistaken.
I'm composing this message on an Amiga 3000 that had its motherboard
upgraded from 16 Mhz to 25 Mhz. Ever since the upgrade I occasionally get a
video crash that makes the screen unreadable. But, the system keeps running
OK. For example, if that video crash were to occur while I'm typing this
message, I've learned that hitting right-Amiga and 'S' will save the message
so I can finish the message after re-booting the A3000.
Any Amiga fans out there with any suggestions?
Willi
--
Willi Kusche
WilliK(a)verizon.net
/"\ ASCII Ribbon Campaign
\ / No HTML/RTF in email
X No Word docs in email
/ \ Respect open standards
8:38 a.m.
New subject: MC68881 vs MC68882 (was Re: Mac Plus as a webserver...)
Ethan Dicks wrote:
--- emanuel stiebler <emu(a)ecubics.com> wrote:
That's a while ago ;-)
But as I remember it, if your motherboard provided a different clk for
the FPU,
it could be clocked much higher, reulting in much nice FP performance.
cpu & FPU were working async.
Iggy Drougge wrote:
68882 is right for 68030 & 68020. 68881 only foir 68020.
(talking about hardware, no software)
I _think_ the Amiga 3000/16 had a 16Mhz 68881 and the A3000/25
had a 25Mhz 68882, but I could easily be mistaken. Yeah, the
SE/30 is a 68030, 16MHz; with 68882 FPU...
Me too, but shouldn't that be a 68881? I never did any rendering on my Amigas,
so my use of the floating point was rather limited.
I did, and it was fun ;-)
I skipped over
the '020 when I was heavily into Amigas, leaping from a massively
expanded A1000 (Rejuvinator, Spirit InBoard, Microbotics Starboard w/Star-
Drive, ROM switcher, etc.) to an A3000/25.
Never had an Amiga. Probably it is the time now ...
cheers
8:43 a.m.
New subject: MC68881 vs MC68882 (was Re: Mac Plus as a webserver...)
Ethan Dicks wrote:
Yep. I was a co-owner of a firm that build accelerators for the Ami;
in the lab we used '881s and '882s interchangeably -- just whatever
was handy. As far as the bus interface was concerned the '882 was
identical to the '881 -- it just took fewer clocks than the '881
for some operations.
--
Chris Kennedy
chris(a)mainecoon.com
http://www.mainecoon.com
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
emanuel stiebler <emu(a)ecubics.com> wrote:
68882 is right
for 68030 & 68020. 68881 only foir 68020.
(talking about hardware, no software)
My memory is that the parts were interchangable in hardware (presuming
the speed was OK) but the performance was better at a given speed
for the 68882 over the 68881.
21 Sep
21 Sep
3:07 p.m.
New subject: MC68881 vs MC68882 (was Re: Mac Plus as a webserver...)
Ethan Dicks skrev:
--- emanuel stiebler <emu(a)ecubics.com> wrote:
> Iggy Drougge wrote:
>
> > >Yeah, the SE/30 is a 68030, 16MHz; with 68882 FPU...
> >
> > Me too, but shouldn't that be a 68881?
>
> 68882 is right for 68030 & 68020. 68881 only foir 68020.
> (talking about hardware, no software)
I _think_ the Amiga 3000/16 had a 16Mhz 68881 and the
A3000/25
had a 25Mhz 68882, but I could easily be mistaken.
There are accelerator boards with 68030+68881 as well.
As for the 68881, it may be run with the 68000 as well. It was used in the
Atari Mega ST series in such a configuration.
My memory is that the parts were interchangable in
hardware (presuming
the speed was OK) but the performance was better at a given speed
for the 68882 over the 68881. I never did any rendering on my Amigas,
so my use of the floating point was rather limited. I skipped over
the '020 when I was heavily into Amigas, leaping from a massively
expanded A1000 (Rejuvinator, Spirit InBoard, Microbotics Starboard w/Star-
Drive, ROM switcher, etc.) to an A3000/25.
I didn't have any FPU when I was into rendering. Didn't have any MMU either.
Or a hard drive. Fourteen MHz, two MB of chip RAM and a DD floppy drive is all
you need. ^_^
--
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they people or companies), for any purpose they wish to use it, including
modification, use, peeing on, or even integration into baby mulching machines
or atomic bombs to be dropped on Australia."
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7 comments
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participants (6)
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chris＠mainecoon.com -
DAW＠yalepress3.unipress.yale.edu -
emu＠ecubics.com -
erd_6502＠yahoo.com -
optimus＠canit.se -
willik＠verizon.net