18 Oct
2010
18 Oct
'10
7:18 a.m.
Emulators are great for a lot
of things (offtopically, especially running WinXP in a sandbox) but
aren't nearly so helpful when trying to get original hardware working
again...
I have to disagree. Only last Wednesday I was single shotting my simulator and the real
hardware to find where they diverged. It showed up the fault after a few hundred
instructions instead of running for a half a second before crashing (by which I mean the
hardware stopping because it detected the loading of an instruction where one of the
digits was not binary coded decimal).
I am also working on a deeper simulator which models the actual gates of the computer and
their interconnections. The source code of this describes the computer in great detail and
I would say would be better than real hardware from some purposes. It will also allow
monitoring of signals with a virtual oscilloscope and maybe one day, the introduction of
simulated faults to test the brains of anyone mad enough to want to see how the original
engineers would tackle faults. One day it might even have a 3D graphical interface where
you can walk around the machine, open covers and connect your virtual 'scope and the
original sounds recorded from the real hardware, like the drum running up.
Roger Holmes
ICT 1301 + many Apples - ][, ///, Lisa, and Mac up to the latest MacBook Pro.
18 Oct
18 Oct
9:11 a.m.
I agree with your disagreement. :) While an emulator may not give you 100% insight into a
hardware problem, it can nevertheless be useful in pointing you in the right direction.
On Oct 18, 2010, at 6:18 AM, Roger Holmes wrote:
Emulators are great for a lot
of things (offtopically, especially running WinXP in a sandbox) but
aren't nearly so helpful when trying to get original hardware working
again...
I have to disagree. Only last Wednesday I was single shotting my simulator and the real
hardware to find where they diverged. It showed up the fault after a few hundred
instructions instead of running for a half a second before crashing (by which I mean the
hardware stopping because it detected the loading of an instruction where one of the
digits was not binary coded decimal).
I am also working on a deeper simulator which models the actual gates of the computer and
their interconnections. The source code of this describes the computer in great detail and
I would say would be better than real hardware from some purposes. It will also allow
monitoring of signals with a virtual oscilloscope and maybe one day, the introduction of
simulated faults to test the brains of anyone mad enough to want to see how the original
engineers would tackle faults. One day it might even have a 3D graphical interface where
you can walk around the machine, open covers and connect your virtual 'scope and the
original sounds recorded from the real hardware, like the drum running up.
Roger Holmes
ICT 1301 + many Apples - ][, ///, Lisa, and Mac up to the latest MacBook Pro. 
9:13 a.m.
New subject: What would facebook be like in 1984
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in-1984/
An artist did a rendition of what facebook would be like in 1984, I am trying to figure
what what computer is used in the picture
9:25 a.m.
New subject: What would facebook be like in 1984
On Mon, Oct 18, 2010 at 06:13:23AM -0700, Christian Liendo wrote:
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in-1984/
An artist did a rendition of what facebook would be like in 1984, I am trying to figure
what what computer is used in the picture
It's not a photo, it is indeed the artists rendition of an old computer.
/P
9:28 a.m.
New subject: What would facebook be like in 1984
On Monday, October 18, 2010, Christian Liendo wrote:
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in-1
984/
An artist did a rendition of what facebook would be like in 1984, I
am trying to figure what what computer is used in the picture
It appears to be based off a TRS-80 model 3 or 4. You do realize that
it's not a photograph, right? :)
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
6:33 p.m.
New subject: What would facebook be like in 1984
On Mon, 18 Oct 2010, Patrick Finnegan wrote:
It appears to be based off a TRS-80 model 3 or 4. You
do realize that
it's not a photograph, right? :)
I think that it looks a little more like a Northstar Advantage, or a
Vector Graphic (which were often relabeled - Sellam has my "Pentabs"
Vector Graphic)
1:04 p.m.
New subject: What would facebook be like in 1984
On Mon, 18 Oct 2010, Christian Liendo wrote:
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in-1984/
An artist did a rendition of what facebook would be like in 1984, I am
trying to figure what what computer is used in the picture
I don't think it's supposed to be any particular computer. The entire
screen appears to be created in a drawing program. The disk drives were
cut-and-pasted.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
1:10 p.m.
New subject: What would facebook be like in 1984
At 10:04 AM -0700 10/18/10, David Griffith wrote:
On Mon, 18 Oct 2010, Christian Liendo wrote:
The curvature of the screen also looked a bit too severe for that era.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com | OpenVMS Enthusiast |
| | Photographer |
+----------------------------------+----------------------------+
| My flickr Photostream |
| http://www.flickr.com/photos/33848088 at N03/ |
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in-1984/
An artist did a rendition of what facebook would be like in 1984, I
am trying to figure what what computer is used in the picture
I don't think it's supposed to be any particular computer. The
entire screen appears to be created in a drawing program. The disk
drives were cut-and-pasted. 
2:24 p.m.
New subject: What would facebook be like in 1984
On Mon, Oct 18, 2010 at 9:13 AM, Christian Liendo <
christian_liendo at yahoo.com> wrote:
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in-1984/
An artist did a rendition of what facebook would be like in 1984, I am
trying to figure what what computer is used in the picture
well, one other problem with this portrayal is that it's inaccurate. I still
have my brochure from the early 80's for Compuserve. There was already RLE
graphics support on their VidTex service on Compuserve in '84 for most of
the micro's on the market back then. It was only b/w but still 256x192 res.
They even had libraries of digitized photos, beside plain images. The
service was damn expensive but it worked. I bet It wouldn't take much to
scan your photo then for that retro version of FB. Although I can't recall
at the moment when the consumer document scanners were available - there
might have been still only commercial grade scanners available at the time.
But I guess if you could afford the high connect rates at 9600bd for
Compuserve you could also afford one of the first commercial Fuji digital
cameras which arrived a couple of years later :)
=Dan
--http://www.vintagecomputer.net/ragooman/
4:27 p.m.
New subject: What would facebook be like in 1984
On Monday, October 18, 2010, Dan Roganti wrote:
On Mon, Oct 18, 2010 at 9:13 AM, Christian Liendo
<
christian_liendo at yahoo.com> wrote:
OMG, An artistic portrayal that's inaccurate!!!
This is really worth a discussion?
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
http://8bitaficionado.com/2010/10/18/what-would-facebook-be-like-in
-1984/
An artist did a rendition of what facebook would be like in 1984, I
am trying to figure what what computer is used in the picture
well, one other problem with this portrayal is that it's inaccurate.
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christian_liendo＠yahoo.com -
cisin＠xenosoft.com -
dgriffi＠cs.csubak.edu -
healyzh＠aracnet.com -
oltmansg＠bellsouth.net -
pat＠computer-refuge.org -
pontus＠Update.UU.SE -
ragooman＠gmail.com -
roger.holmes＠microspot.co.uk