I have a few IBM model 5150s that I use to code entries for programming
competitions and I'd like to try to speed up the hard disk in any way possible.
(If you're curious what my last project was, check out
http://www.pouet.net/prod.php?which=13722 to download and try it out -- it
displays full-screen full-motion color video with sync'd sound -- yes, on a
4.77MHz 8088, no fooling). I've been looking for any way to speed up the hard
disk subsystem (currently WD1002 with Seagate ST225) and I simply can't get
more than 130KB/s out of the darn thing... so:
- Is there any MFM/RLL 8-bit ISA controller that can read disks at their full
1:1 interleave? If so, where can I get one? 3:1 is the best I've been able to
get using the above MFM combination. I haven't tried RLL yet because I don't
have any RLL controllers.
- If not, do such things exist as 8-bit ISA IDE controllers? I have lots of
"little" IDE drives (320MB and 540MB models) that I could hook up.
I attempted not one but TWO 8-bit Plus hardcards (both 40MB models), thinking
that the embedded drive/controller combo would be better, but my experience
with Plus Hardcards (even the 16-bit 120MB versions) is that, after about 8
years, the damn EEPROM forgets everything and it doesn't boot (no BIOS, get a
1701 "controller error"). So I couldn't get either of them to work. (As a
result I have 4 Plus hardcards that I am *this close* to throwing away, unless
someone has an idea of reviving them :-)
Any advice? Or should I just try to find an EMS board and cache my data
instead? (Speaking of which, does anyone have a LIM EMS board for sale/trade?
Can't seem to find one of those either.)
--
Jim Leonard (trixter(a)oldskool.org) http://www.oldskool.org/
Want to help an ambitious games project? http://www.mobygames.com/
Or check out some trippy MindCandy at http://www.mindcandydvd.com/
Hello folks,
I have a question about those TTYs that the deaf use. Are they real
Teletypes, like ASR33 and friends, or not? I guess probably not, because
it would be so super-cool if they were that it's probably too good to
be true, but I thought I would ask anyway. So what are they? Are they
normal ASCII terminals with standard modems built in, or something
entirely different? Can one pretend to be deaf, go to some social service
or whatever agency asking to use a deaf TTY, and dial into a timesharing
host or BBS with it?
It also seems like there are two kinds of deaf devices, TTY and TDD.
What's the difference?
MS
At 11:50 AM 12/11/2004, you wrote:
>There are such devices though I think they use ABS plastic. Newer ones (3D
>printers) seem to be using dust of some kind (starch?) with water or something
>sprayed on the dust with an ink-jet head.
Once having been in the 3D market, I have a small collection of objects
>from UV-cured stereolithography and Z Corp's starch-based system,
including one of my head as scanned by a laser body scanner.
- John
I just acquired a large pile of 27128s and 27C128s --
clearly pulled from sockets, and as of yet untested.
I thought I'd offer them to the list first. Ten for $10 plus
postage. If no takers, I'll clean and verify 'em and put
'em up on the Web site for $3 each.
Please contact me offlist.
Later --
Glen
http://www.acme-sales.net
I just acquired a large pile of 27128s and 27C128s --
clearly pulled from sockets, and as of yet untested.
I thought I'd offer them to the list first. Ten for $10 plus
postage. If no takers, I'll clean and verify 'em and put
'em up on the Web site for $3 each.
Please contact me offlist.
Later --
Glen
http://www.acme-sales.net
>From: "Tom Peters" <tpeters(a)mixcom.com>
>
>There was an attempt to "simplify" connection of multiple floppy drives
>(meaning TWO) at one time by adding a "twist" to the cable-- some
>conductors in the ribbon are cut out and reversed, which is a sort of
>"cable select" for floppy drives.
>
>I seem to recall in this case that one would jumper both drives as drive A
>in such a case, or as DS0.
>
>Stupid idea. Use a straight thru floppy cable and jumper one for DS0 and
>one for DS1. We get it.
>
>If you intermingle the two drive select ideas you may have problems where
>both or niether drives light up and niether can read.
---snip---
Hi
As I recall, the two drives with the twist were actually
DS0 and DS2 as seen by the controller. If using a straight
cable, one had to skip DS1.
Dwight
>From: Ladyelec(a)aol.com
>
>In a message dated 12/9/04 8:21:47 PM Central Standard Time,
>cctalk-request(a)classiccmp.org writes:
>
>
>> ubject: Re: Got a HP 2648. Now what?
>> To: "General Discussion: On-Topic and Off-Topic Posts"
>> <cctalk(a)classiccmp.org>
>> Message-ID: <Pine.LNX.4.61.0412091313390.12343(a)fiche.wps.com>
>> Content-Type: TEXT/PLAIN; charset=US-ASCII
>>
>> > I'll keep going:
>>
>> So. Are there any women (left) on this list? Hmm... I wonder why.
>>
>
>Ya'll have at least one.
>ME!
>Isa
>
Hi Isa
What type of machines are your favorites? Most of the
women we've had in the past were into the heavy metal machines.
You know, "If you could pick it up, it really wasn't a computer."
Dwight
there are commercial machines that use a liquid photopolymer and a laser.
You can scan a 3d object or feed in a autocad drawing. The object is then
"built" from the bottom up 4 thousands of an inch at a time. You can create
up to a final object size of a cubic foot with one machine I have seen. Its
really cool to watch it make a part. The photopolymer is around $5 an ounce
though (I seem to recall).
> > I've daydreamed about a rapid prototyping machine that used
> > relatively inexpensive hot glue sticks to create plastic 3D models.
> >
> > - John
> >
>
>
>
>There are such devices though I think they use ABS plastic. Newer ones (3D
>printers) seem to be using dust of some kind (starch?) with water or something
>sprayed on the dust with an ink-jet head.
>
>
>Peter Wallace
In a message dated 12/9/04 8:21:47 PM Central Standard Time,
cctalk-request(a)classiccmp.org writes:
> ubject: Re: Got a HP 2648. Now what?
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk(a)classiccmp.org>
> Message-ID: <Pine.LNX.4.61.0412091313390.12343(a)fiche.wps.com>
> Content-Type: TEXT/PLAIN; charset=US-ASCII
>
> > I'll keep going:
>
> So. Are there any women (left) on this list? Hmm... I wonder why.
>
Ya'll have at least one.
ME!
Isa
> Was that Alison? I remember the name from the
> list way back and wondered what had happened ...
That makes two. Megan and Alison. I think MBG tends to check
for interesting topics to comment on every few weeks (Thank-You).
In general, She is ex-DEC and this list is less DEC oriented than it
used to be. I'm tempted to go over to a netnews list.
And we do have a few lurkers running Internet shops and things.
There are just some things that don't help you meet women.
My college had a 9:1 ratio. The MIT swap meet looks like about 20:1.
** On the other hand, this is a great
place for women to meet men. **
John A.
