On Jan 16, 10:00, Rob O'Donnell wrote:
>
> Somewhere out there in the world there is also at least one econet
<-->
> X.400 box, (coz I saw it on eBay) which was based on a BBC B with
some
> customer software/hardware - would be nice to get hold of the
> specs/software on that too - could eventually link my emulated BBCs
to the
> Internet properly..
X.400 is a messaging (email etc) protocol; I think you've seen an Acorn
X.25 Gateway. They weren't one of Acorn's success stories :-) I
recall the Psychology Department at Edinburgh University had one, they
intended it to link their Econet lab to the ERCC network and thence to
JANET. It's a box with a BBC motherboard and some extra gubbins in it.
You'd be better to run something like !Gateway on an Archimedes or
RISC PC with an Econet and an Ethernet interface.
--
Pete Peter Turnbull
Network Manager
University of York
On Jan 16, 4:43, der Mouse wrote:
> >> What indeed... Now, Maplin do some nice 13mm LEDs, how big do you
> >> think we could make a panel? How about the 3" LED clusters they
use
> >> as tail lights on buses round here? Make a PDP-8 6' across, like
> >> the giant MS-20 that Korg made for demo tours in the 1970s?
> > But then you'll need the MIG welder again :-)
>
> Details, details. :)
>
> Actually, I'm a bit interested in the other direction: how _small_
> do/can LEDs get? (And how much heat do they produce?) I've been
> pondering something, but in order for it to be workable I need to be
> able to cover fairly large areas with some kind of display technology
> at a resolution no worse than about 75dpi. Since "large areas" means
> dozens of square feet, too large for a CRT, all I've been able to
think
> of are LEDs. But I don't know how practical (or more likely how
> drastically impractical) that is.
Interesting... Smallest I've seen are surface mount, about 0.1" x
0.05". Not small enough for 75dpi, but perhaps you can get smaller
arrays. However, even LCD displays for laptops are only about 75 dpi,
and I suspect you'd get gaps between the arrays.
Power? Well, rule of thumb is around 2V across an LED, at around 10mA,
depending on the type and brightness you want. Suppose you used the
surface mount types I've seen, that would be 10 x 20 = 200 in a square
inch; at 10mA each that's 2A at 2V = 4W, or about 576W per square foot.
I don't know offhand what the efficiency of an LED is, but a few of
those would make a reasonable room heater :-) Of course, you could
multiplex them and cut the power to maybe 10%-20% of that.
--
Pete Peter Turnbull
Network Manager
University of York
On Jan 16, 1:14, Witchy wrote:
> I'll just make do with my NeXT Station for now :) Sleek. Black. No
burn on
> the screen and NeXTSTEP 2.3 installed. If anyone's got spare NeXSTEP
media
> I'll be all ears :) I wonder if it'll compile Moz Firebird?
I'm sure I have a later version somewhere. I could burn a copy, though
it might take a while to find it.
--
Pete Peter Turnbull
Network Manager
University of York
Hi folks,
Googling around for more info on NeXT Computer to flesh out my new NeXT page
on Binary Dinosaurs turned up something I'd really like to get my paws on
but I'll bet was consigned to the bin straight away - the 'star trek'
project started by Apple to port MacOS across to Intel hardware in the early
90s. So far I've found that a team of engineers succeeded in the port, but
it was canned in 1993 when Apple was moving from 68K to PowerPC processors
and it was found to be faster on a 486.
The same tale reminds me that I'd really like a Be Box too :)
Cheers,
--
Adrian/Witchy
www.binarydinosaurs.co.uk - possibly the UK's biggest online computer museum
www.snakebiteandblack.co.uk - ex-monthly gothic shenanigans :o(
All this talk of emulators has got me thinking. (See you knew you could
smell burning dust.)
Does anybody know of an emulator of the BBC Micro that supports:
- Econet (networking, preferably mapped over tcp/ip so I can run multiple
emulators and have them talk to each other)
- Serial Port as Telnet (A couple will map to COM1 etc, but would be nice
to have a telnet interface instead)
- Tube/65C02 Second Processor
This is so I could set up my BBS again on a PC and not have to find space
for half a dozen micros and a hard disc unit the size of a 1KW UPS. (And
almost as heavy)
Somewhere out there in the world there is also at least one econet <-->
X.400 box, (coz I saw it on eBay) which was based on a BBC B with some
customer software/hardware - would be nice to get hold of the
specs/software on that too - could eventually link my emulated BBCs to the
Internet properly..
On Jan 15, 20:00, Fred N. van Kempen wrote:
> On Thu, 15 Jan 2004, Curt vendel wrote:
>
> > The Atari 822 Thermal printer was also an Apple ][ printer as well,
I think
> > it was an alp's I need to doublecheck, I saw the exact same printer
in a
> > very old Apple catalog long ago... the Atari 825 printer was a
Centronics
> > 737
> ... and wasnt that 737 also known as 'GLP' - Great Little Printer,
> budnled with several Tandy and Commodore (via user port) 'puters
> at the time?
Similar but not the same. 737 is a 739 without the graphics ROM.
--
Pete Peter Turnbull
Network Manager
University of York
--- Subramanian Iyer <india_50(a)yahoo.com> wrote: >
Date: Mon, 12 Jan 2004 19:47:59 +0000 (GMT)
> From: Subramanian Iyer <india_50(a)yahoo.com>
> Subject: help with a classic comp (NEC V20)
> To: cctech(a)classiccmp.org
>
> i could lay my hands on an old NEC V20(8088 i guess)
> comp (a Hitachi Motherboard i guess no. HIL8)
> recently. it must be atleast 15-20yrs old. it does
> hv
> all its components and interfacing cards along with
> its bios.
> here lies the problem. i don't hv any idea if it
> works
> or not. the pwrsupply works for sure (i checked).
> the
> monochrme monitor that i got with it does not work.
> where should i start checking if it is working, if
> the
> bios, processor and other chips ar in good
> condition?
> i hv no idea....
> kindly help.
> contact in pvt. for helping me...
> Subs
>
>
________________________________________________________________________
> Yahoo! Messenger - Communicate instantly..."Ping"
> your friends today! Download Messenger Now
> http://uk.messenger.yahoo.com/download/index.html
>
________________________________________________________________________
Yahoo! Messenger - Communicate instantly..."Ping"
your friends today! Download Messenger Now
http://uk.messenger.yahoo.com/download/index.html
--- Subramanian Iyer <india_50(a)yahoo.com> wrote: >
Date: Mon, 12 Jan 2004 19:47:59 +0000 (GMT)
> From: Subramanian Iyer <india_50(a)yahoo.com>
> To: cctech(a)classiccmp.org
> Subject: help with a classic comp (NEC V20)
>
> i could lay my hands on an old NEC V20(8088 i guess)
> comp (a Hitachi Motherboard i guess no. HIL8)
> recently. it must be atleast 15-20yrs old. it does
> hv
> all its components and interfacing cards along with
> its bios.
> here lies the problem. i don't hv any idea if it
> works
> or not. the pwrsupply works for sure (i checked).
> the
> monochrme monitor that i got with it does not work.
> where should i start checking if it is working, if
> the
> bios, processor and other chips ar in good
> condition?
> i hv no idea....
> kindly help.
>
> Subs
>
>
________________________________________________________________________
> Yahoo! Messenger - Communicate instantly..."Ping"
> your friends today! Download Messenger Now
> http://uk.messenger.yahoo.com/download/index.html
________________________________________________________________________
Yahoo! Messenger - Communicate instantly..."Ping"
your friends today! Download Messenger Now
http://uk.messenger.yahoo.com/download/index.html
