< Although there are some software complexities, the hardware support need
< for the single-supply Flash parts is simply providing a WE signal, just
< like for an SRAM (but on a different pin, IIRC).
What about 2816 or 2864 EEproms, easier to use than flash, single 5v
too same footprint as 2716/6116(2kb) or 2764/6264(8kb). they are
fairly cheap too. Like under 6$ from JAMECO or JDR.
Allison
< I have been in discussion with some folks about 1802's and the possibili
< of producing a modern PCB for the Popular Electronicss Elf design. Han
< Franke seems to think that there would be some interest in Germany for
< a few units, enough to make me consider burning a board. I would be
< curious to hear what other list members though about price, features, et
< The good news is that Harris still makes the 1802 for less than $10, an
< the TIL311 displays that the Elf calls for are available for less than $
< each, used.
I'd be interested depending on version.
< How authentic should a modern Elf be? Try to use 1822/2101 RAM or use
If your building an elf then 2101, if your doing superElf go for 32k
62256.
< UART? Add an I/O port? Add nothing to the Quest PCB layout? Remove
< nothing? (There was a socket for a 16-pin PROM and room for onboard 780
< regulator as well as optional memory battery backup).
The quest layout was the bare minimum elf. No expandability. I have one
and expanding it is not appealing. An expandable elf would be of interest
to me as I still have one (20 year old) 1802 doing not much.
< How much would anyone pay for such a thing? The PCB would probably com
< as a double-sided, plated thru-hole fiberglass board to the same dimensi
< as the Quest board (I have one to compare it to). It would be in the
< neighborhood of $40-$50, depending on how many extras and the order size
For the quest board that is expensive for the bare board.
< Another question, perhaps more on topic - would this count as a classic
< It could be authentic as far as operation is concerned (toggle switches
< and 256 bytes of accessible RAM), but it would still be on a modern
< board, made recently. In short, does form or function denote "classic"
I'd go with replica.
< Yes, anyone who wants can still breadboard an 1802 together. It's a
< pain. I never would have finished my Elf if I hadn't had the PCB
< to stuff. The Elf99 would be a echo of the former classic, but a
< fully working one.
The base ELF was pretty trivial to build as the parts count was nothing.
< Classic clones, anyone?
Replicas of classics.
Allison
also, mac se models that had the factory hi density drive installed have the
FDHD stamped on the front like mine.
In a message dated 11/9/98 11:41:21 PM US Eastern Standard Time,
Marion.Bates(a)Dartmouth.EDU writes:
> Motorola 68000, 8MHz, expandable to 4MB, came with either two floppy drives
> or one floppy and one internal hard disk (80MB I think), and at some point
> there was an FDHD (Floppy Drive High Density) upgrade available -- SE's that
> have had the upgrade and new front case will say "Superdrive" on the front.
> Upgraded power supply -- not the same as the analog board in the similarly-
> shaped Mac 128/512/Plus. One expansion slot (I don't know what kind, but it
> allowed for a video card so you could drive a second display, and a
commonly-
> found configuration is an SE driving a giant grayscale two-page display).
> Introduced in March 1987 and discontinued in October 1990.
If we don't find a list owner at u of washington, I can host the list on my
home unix machine. Caviets apply - if the list clobbers me loadwise I'll
have to ask it to move again. Can someone give me figures on how many people
actually use this list?
And for reference, my home unix machine runs continuously on the end of an ISDN
link. It's a dx4/100 machine running linux.
--
Jim Strickland
jim(a)DIESPAMMERSCUMcalico.litterbox.com
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Vote Meadocrat! Bill and Opus in 2000 - Who ELSE is there?
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Hi Gang,
(I'm pretty sure that the system's discribed below are 10 yrs old)
About a week ago I was out in Silicon Valley on business.
I used to live out there so whenever I go out I try and hit
all the surplus stores.
At one place (name follows), I found a couple of interesting
items. They had two models of old Panasonic computer.
One was a Panasonic (senior?) Executive. This looked
like a laptop on steroids. It was way too big for me to
get back with me unless I was willing to trade space
with some other stuff that I already had. They wanted
$30 for it. It might still be there.
The other item of interested was a (actually they had 2
on the shelf) beautiful Panasonic senior partner portable.
This gem was cherry. It had never been used. For those
of you not familiar with it, it has a built in thermal printer.
It's about the size of one of the old compaq portables but
the case has much smoother lines. It has a leather handle
on one end that allows you to carry it in a vertical orientation,
similar to the suitcases that the airline stewardess' use.
The one I got still had the flimsy plastic protective cover on
the leather handle. I also got a pristine roll of thermal
paper still in plastic wrap, original manuals and diskettes.
I wouldn't be metioning all of this except that as I was
purchasing this prize (20 bucks by the way) and trying
to find out if there was an original box available, the
clerk told me that they about 30 of these still in their
original boxes in the warehouse. They had just picked
up the whole lot somewhere.
So the chances are that they might still have a bunch
if anyone is interested.
I don't know if they will ship, but you can ask. If they don't then
at least the list members who live in the bay area can
check them out.
If anyone is interested here's the info:
Excess Solutions
430 E. Brokaw Road
San Jose, CA 95112
(408) 573-7045
For the local guys, this place is located right on Brokaw about
a block from the street that Fry's is on (towards 101) and on
the same side of Brokaw as Fry's.
Good luck.
Jon
< Allison Parent resonds:
< > If you're building an elf then 2101, if your doing superElf go for 32
< > 62256.
<
< If I can lay my hands on a quantity of 1822/2101 RAMs, then I agree,
< even though they will cost as much as the CPU. The 6264 was a fallback
I happen to have a few tubes of both 2101 and 5101(cmos).
< In any case, I would decode 7 or 8 upper address bits if I went with
that would make expansion easier.
< a larger SRAM and allow the user to stick in there what they wanted.
< One other suggestion is room for a ROM. I could wire in two or three JE
< sockets and let the builder pick what to go in the, one 62256 or a coupl
< of 6264's and a 27128, for example.
Fair idea... However a base quest elf with a 3x5" area of plated hole on
a .1 grid for protoing would be just as useful.
< The problem with replicating the SuperElf is the keyboard. I have no
< idea where to get that chip from (74941?), nor an inexpensive source
That could be hacked with a pal/gal but then is gets hairy.
< Me, too. There are a couple ways of implementing expansion, Elf-II comp
< and COSMAC VIP compatible. The VIP used those ubiquitous 44-pin cards.
I have the drawings, manuals and I think the rom dumps for a VIP. That
used a simpler keyboard arrangement. I never had much use for it's video
scheme as I wanted minimally 64x16 text as my prefered mode.
< I was thinking of extras like an area for the 1861 video, or a 2"x4"
< perfboard prototyping area. In any case the Quest design wouldn't
< be that expensive in sufficient quantities, but at q. 25, there's
< a lot of setup charges to amortize over the small run of the boards. A
< least $10 each (~$250 setup / 25 boards). If anyone can direct me
< to a board house that will do a 6"x9" board with ~600 holes, three or
< four sizes, plated through, with minimal setup charges, I'm all ears.
< Unless I get *lots* of interest, I'm only considering a run of 25,
< then that's it. I don't want to have 60 or 70 unsold boards hanging
< around forever.
Can't help on the board house. But the 2x4" proto area is desireable.
Not that I'd use it but is the 1861 even available? I don't have any of
them nor 1854s.
< 40 pin CPU, 2x22 pin RAM, 11 switches, 2x7 pin displays, approx 10 CMOS
< DIP parts x 14 or 16 pins, a handful of diodes and resistors... let's
< say about 350 point-to-point connections, probably more. I breadboarded
Compared to some of the projects I was doing then that was trivial. Try
16k of 2114 (32 of them), 2 2732s, z80, ctc, sio, 765 FDC, plus interface
logic all on a s100 card.
< The Quest kit was the base ELF plus a ROM socket and space for primary
< and secondary power supplies. One suggestion for the Elf replica was
< to use a standard 4-pin Molex connector and power it from a discarded
< PC power supply. The Quest Elf kit just had two solder pads for 6.3V A
< or +5V DC. I ran mine from my VIP regulated +5v supply.
I used a stack of AA cells (6 of them and used the regulator), then would
run a long time and was portable.
Allison
>I saw an NEC Multisync in a thrift shop today. Looks like a nice
>monitor, can do TTL and analog inputs. Could someone tell me what
>exactly are the modes that it does? Also, are there any monitors like
>this that can also take VGA inputs in addition?
If this is the original NEC Multisync it will do anything from MDA to SVGA
800 X 600.
The connector is a 9 pin MDA/CGA/EGA type but there is a digital/analogue
switch that will allow VGA and SVGA if set that way.
To use as a VGA you need an adaptor cable known as a "Multisync" cable which
is 9 pin F to 15 pin F. Readily available and about $5 around here.
I used to keep a bunch of different monitors around until I found what these
can do. Another benefit is that they are usually very cheap because most
people think they are only EGA.
>From: "Hans Franke" <franke(a)sbs.de>
>Maybe, but zero feedback isn't realy a thing to rate -
>I did a lot of eBay transactions within the last year
>(>20) and have still a feedback of Zero - I don't care.
You are right in your assertion that feedback for someone
who is a bidder makes little difference. However, for
a seller (like myself) it is extremely important.
For example, I just had two auctions end tonight in which
my bids for both of the items were about double that
of what is usually realized on ebay for the same identical
items. This happened because I have a perfect feedback
profile and that alone results in higher bids. I have seen
it time and again. My advice to anyone who wishes to sell
repeatedly on eBay is to do whatever it takes to protect
your feedback profile. In my case, it means a policy
of satisfaction or money refunded (and I have rarely
been asked to grant a refund).
Bob Wood
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
--- You wrote:
Found a nice Macintosh SE computer at my local Goodwill today...
Anyone know anything about the SE series ?
Speed, processors, memory ?
Phil...
--- end of quote ---
Motorola 68000, 8MHz, expandable to 4MB, came with either two floppy drives or one floppy and one internal hard disk (80MB I think), and at some point there was an FDHD (Floppy Drive High Density) upgrade available -- SE's that have had the upgrade and new front case will say "Superdrive" on the front. Upgraded power supply -- not the same as the analog board in the similarly-shaped Mac 128/512/Plus. One expansion slot (I don't know what kind, but it allowed for a video card so you could drive a second display, and a commonly-found configuration is an SE driving a giant grayscale two-page display). Introduced in March 1987 and discontinued in October 1990.
The SE/30, the only other one in the SE series, had a 68030 running at 16MHz, was expandable to 128MB of RAM, had a math coprocessor, and faster bus speeds.
-- MB
< but it was a particularly twisted architecture that only a TRW satellit
< programmer could love.
An aside to all this... The 1802 was a very strange chip. It was by far
the crudest and yet the easiest to program all at once. My pet peve is
there are holes in the instruction set where a reciprocal instruction
would have been nice but wasn't there. It redeeming feature was it was
CMOS and the only other CMOS part at that time was the 6100 (PDP-8).
What surprized me is that the 1802 (maybe the 05 too?) are still
available. The 05 is desireable as it has the hard coded SCRT
instuction (more like a procedure!).
Allison
