The Apple Lisa is complete, does not appear to be screen burned.
Includes hard drive and floppy drive and keyboard.
Somewhat yellowed due to age.
Does NOT power on, no repairs attempted.
(Is there someplace else to turn it on, besides the white square button
above the keyboard jack?)
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
_____
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2634/5952 - Release Date: 12/11/12
http://classiccmp.org/pipermail/cctalk/2010-January/282022.html
It always suprised me that hre BBC micro used the 6502 rather than the
6809. By the time the Beeb was designed, Acorn had made a 6809 processor
board for their System machines, so they must have had experience with
the chip. THe Beeb is nice, but a Beeb with a 6809 processor would have
been something else :-)
-tony
Hi! When I designed the N8VEM 6809 host processor it is loosely based on an
article I read for the BBC computer called "Dragon in the tube". I am not
very familiar with the UK microcomputers but apparently 6809 "coprocessors"
were fairly common peripherals on their Z80 and 6502 designs. I used a
similar concept for the N8VEM to allow its Z80 SBC to access the 6809 as a
"host processor" peripheral on the ECB.
One of the builders was able to get CUBIX running on the N8VEM 6809 host
processor using the Z80 as its "IO processor". However, I can see how the
implementation can get confusing because it is either a Z80 based system
with a 6809 coprocessor or a 6809 based system with a Z80 IO processor. In
reality it doesn't really matter but it's a matter of perspective.
The N8VEM 6809 CUBIX implementation allows the use of ECB peripherals like
IDE, video, floppy, serial, parallel, etc but it requires the Z80 to serve
all the IO based on 6809 commands. I added the 6809 IO mezzanine board
(power, ACIA, PTM, 2 VIAs, expansion bus) to give builders the option of
using the 6809 host processor as a stand alone computer or to add separate
IO to the N8VEM system when connected to the bus. The idea being to let the
6809 host processor interact with the outside world using its own IO and
only involve the Z80 when absolutely necessary.
The hardware seems to work OK but we'll see where the software goes. I
think with CUBIX the 6809 N8VEM system becomes a lot more practical. The IO
mezzanine fits on top of the 6809 host processor. You can see some photos
here. These are out of date but give a good idea. Recently I fitted an
improved serial cable and the nylon standoff hardware. Also the PTM seems
to be working and that's good.
http://n8vem-sbc.pbworks.com/browse/#view=ViewFolder¶m=m6809
I have many 6809 host processor and IO mezzanine PCBs so if anyone is
interested please let me know. This would be a great opportunity for anyone
who would like to do some 6809 hardware and software hacking.
I think the N8VEM 6809 host processor is the only system I am aware of other
than Dave's homebrew that is running CUBIX. There maybe some other homebrew
systems out there too I can't find them after some searching.
Thanks and have nice day!
Andrew Lynch
Hi guys,
I'm trying to get my hands on a 5.25in double-sided 40 tracks per side
"360K" floppy drive with the Shugart or IBM PC 34-pin connector (either
edge connector or pin header is fine). Does anyone have a spare they'd
like to part with? Slight preference for Teac or Mitsubishi, but
anything will do at this point.
I've checked Ebay, there are tons in the US (complete with "seller does
not ship internationally, don't even ask"), but the only ones I've seen
>from UK sellers are parts scalpers wanting stupid money for them (?149
"sold untested with no guarantee"? really?).
A BBC Micro 40-track drive would also be fine -- as long as it's native
40-track, not 40/80 track switchable or double-stepping (an 80-track
drive mated to a PCB which double-steps the head). Cumana, Viglen and a
few other companies made these, they were extremely common a few years ago.
I'm on the verge of getting DiscFerret write support working (at least
for UNIX PC disks) but the sodding thing won't read anything my 80-track
drives have written!
I'd rather not borrow the 3B1's drive - the DiscFerret is experimental
and a benchtop lashup is hardly an ideal scenario.
Thanks,
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/
Dave,
> If the internal screen is fine then the syncs are at or close to the
> proper frequency, so any problems are going to be around the NTSC
> modulator, which would be fun to debug without a scope...
I do have a scope- poking about down in the chassis is difficult- I don't have
an ISA extension card. The composite trace drops down to the back side of the
card, comes up through a resistor, goes to the light-pen header, through another
resistor and vanishes into the middle layer. I could start just prodding with my
meter to see where it re-surfaces... but, well, yeah. A schematic would make
that easier.
The image on composite "tears" horizontally. I made a video of it, hooked up to
my TV set in the living room: http://youtu.be/a4jcKiSwUos
> On the other hand whilst I have never tried the Composite on CGA, but I
> have tried comparable modes on several other computers, including my
> rather old Atari STE, and a very modern Raspberry PI and it sounds like
> its working (almost) just fine. The composite out on CGA cards always
> was pretty useless, and "legible, just" pretty much describes any
> 80-colum output on composite. Try 40 a column mode (2 or 3)...
That's in 40-col mode, above. In 80-col it goes into a text mode rather like
MDA, which I haven't scoped to see if it's not present at the jack, or if the TV
refuses to display it. It's remarkably crisp, considering.
On a regular TV set (older, cheaper, no-name set)-
http://www.flickr.com/photos/philandrews/8657681921/
Above was trying to display this-
http://www.flickr.com/photos/philandrews/8660917851/
Admittedly that was all unbalanced, but I'm sure it should be a little better
than that.
> (Oh and my experience is with PAL, NTSC would probably be worse.....)
> If you have a TV with a SCART then the circuit below would work..
> http://www.electroschematics.com/377/
> but I guess you are in the US and and your TV will have CYMG inputs.
> Actually that circuit would probably work with CYMG but the colours
> would be wrong.
Yeah, I should have said. I moved out here to the States a number of years ago
now. My TV sets have all the usual "modern" inputs for here, CATV (NTSC
modulated), Composite-in, YPbPr component, HDMI and the one in the bedroom has a
VGA-in.
> If have a modern LCD TV with a VGA input you could try something
> similar, but leaving the syncs separate and feed it into the VGA. This
> might sound daft but often LCD TVs will sync to normal TV on the VGA. IT
> doesn't work with monitors, but it does with some TVs. As a quick and
> dirty test you could just use 470 ohms on all leads and omit the "I"
> line....
I can give that a try, but it's a band-aid to the symptom. I've got another
machine with CGA out and the TV displays it nicely. I'd like to be able to use
the composite-out because the machine has several games on that make use of the
timing inconsistencies in NTSC to create a larger color palette than the
standard 4. That would, however, be useful for other applications. It's been a
while since I've seen a SCART connector..!
> Dave
> --
> Dave Wade G4UGM
> Illegitimi Non Carborundum
I'm currently pulling the CIS-local code out of DECWAR in aid of installing
it on the DECsystem-1070 (KI-10 #587) running at the museum. It would be
very helpful to (1) talk to someone who programmed in Macro-10 on the CIS
systems, or (2) at least find someone with UUO and programming environment
manuals. (I don't see either CIS or CompuServe on Bitsavers, but I may be
missing something.)
Does anyone reading CCtech/CCtalk want to confess to having experience in
these matters? Privately or publicly?
Thanks,
Rich
Rich Alderson
Vintage Computing Sr. Systems Engineer
Living Computer Museum
2245 1st Avenue S
Seattle, WA 98134
mailto:RichA at LivingComputerMuseum.orghttp://www.LivingComputerMuseum.org/
>
>Subject: VT-180 (Robin) EPROM images?
> From: "Robert Armstrong" <bob at jfcl.com>
> Date: Sat, 10 Mar 2007 20:23:04 -0800
> To: <cctech at classiccmp.org>
>
> Does anybody have images of the v2.1 Z-80 firmware for the VT-180 (aka
>Robin) ? At least, I think 2.1 was the last version ever released. They
>should be DEC part numbers 23-017E3-00 and 23-021E3-00.
>
>Thanks,
>Bob Armstrong
I have enough of them laying around I could supply the actual roms. I've
never imaged them as It's easier to replace the code outright.
Curious why are you looking for them?
Allison
(I think I asked this once before, but I can't remember the result and I can't find the thread in the archive)
I have an Alphaserver 1000 that I would like to resurrect. It periodically hangs or reboots. When it reboots the error is usually "Machine check while in palcode". When it hangs, the hang is so severe the halt button does not work. Either way, it always happens within 20 minutes of booting. I ran all of the diagnostics you get by moving the CPU card jumper (cache memory tests, RAM tests) and they run for an hour or so with no error. (I am assuming the diagnostic halts on error instead of just looping again, is that correct?) During the course of these I moved the jumper to the wrong place and wiped out SRM, so I had to reload SRM from floppy using the failsafe loader. That worked. The SRM diagnostics will also run for as long as I want without error. Does anyone have any idea what's wrong here or is there some kind of XXDP-like thing I can run that will better test the machine?
Hi,
I've been making progress with my pdp11/53 project. Once I figured out
how to get into Emulex F.R.D. mode from ODT, I was able to configure,
format, and test my QD01 connected MFM hard drive.
I'd like to try installing 2.11BSD. Although I've got a TK50 drive
and controller, I don't have any tapes, or anything else here that
can write to them.
I have a Quantum DLT8000 SCSI drive, and an Emulex UC07 scsi controller.
I was able to set the UC07 as the first TMSCP controller, and F.R.D on
the UC07 reports the DLT8000 drive, and tests writing and reading to
tapes loaded in the drive with no errors.
I followed the 2.11BSD setup.ps and HOWTO file instructions to create
a tape with dd, using a Sun Solaris SPARC server connected to the DLT8000.
It seems silly trying to install an OS on a 70MB MFM drive from an
80GB DLT tape, but that's what I've got to work with so far, and my
UC07 can't do TMSCP and MSCP at once, so no SCSI disks if I'm installing
>from SCSI tape.
Back on the 11/53, if I try to "BOOT MU0", the DLT tape spins for a few
seconds encouragingly, but then I get:
KDJ11-D/S E.03
Media not bootable
Should I be able to boot the 2.11BSD boot block on an 11/53 from a
TMSCP connected SCSI tape drive? The BSD setup.ps file includes bootstrap
monitor examples for TM and TS tape drives. Do I need to use one of
these instead of the normal 11/53 bootstrap ROM? Or, maybe there is
something about block sizes and writing the tapes from Sun Solaris SPARC
dd that means they aren't compatible?
Alternate paths I could take might be installing 2.11BSD using VTserver,
or maybe using PUTR or an emulator to set up OS directly onto a SCSI hard
drive or zip drive for use on the 11/53, but I liked the idea of doing it
with tape if I can figure out how. I have successfully booted the 11/53
>from an RT11 RX33 floppy I created with PUTR, for what it's worth.
Mark
--
Mark G. Thomas (Mark at Misty.com)
Evening,
Whilst I'm putting together a mouser order, I might as well order
EVERYTING i'll need...
With the PDP-11/23+, as I won't have the cabinet kit for it, does the
9-pin connector break out to standard RS-232 with baud rate configured via
switchblocks? There's two of 'em, which one is primary?
I'm assuming the pinout is documented in a manual somewhere as well,
correct?
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
Yay! Woo Hoo! Great news! We have S-100 68K CPU running!
Once this project is working maybe we could take another look at the 68360
P1 and/or 68040 SBC?
This is really great news! Please post pictures and notes on the wiki!
Let's get the word out!
Thanks and have a nice day! You've already made mine! w00t!
Andrew Lynch
PS, this project has been in work for 2 years+ so I am very happy to see it
working.
From: n8vem-s100 at googlegroups.com [mailto:n8vem-s100 at googlegroups.com] On
Behalf Of yoda
Sent: Monday, August 12, 2013 10:40 PM
To: n8vem-s100 at googlegroups.com
Cc: monahan at vitasoft.org
Subject: Re: [N8VEM-S100:1808] S-100 68K CPU board V3
Hi John
Thought I would give an update - found the problem with memory - it turns
out pin 1 of U2 on the board had a cold solder joint - guess it finally gave
out. Reflowed the solder - the ground plane is a pretty big heat sink
around pin 1 and can easily get a cold solder joint. Any ways after
repairing that and playing with jumpers and switch settings I have 1 Meg of
memory working with the S100-68K-V3. I also have the oscillator at 16MHz
so the CPU is running at 8MHz and is a buss master. I am using the short
S100 mother board from the group so it may have better noise immunity than
the 22 slot mother board like you are using. I will do some more testing
and want to boost the memory to at least 2 Meg for some experiments. I
will get started next on the new monitor and getting data to load from the
IDE CF card. Looks like I am on my way to getting CP/M 68K ported. I
have a little clean up to do in a couple of areas (upgrade to latest
compiler code, etc).
Dave
