On Jul 9, 14:37, Cameron Kaiser wrote:
> That would be cool (though a commented disassembly would be even better,
> if that's available from anyone). I'm really particularly interested in
> *any* small BASIC implementation on the 6502 (Commodore BASIC doesn't
> count -- *you* try wading through 16K of uncommented disassembly ;-).
Appendix F of "PET/CBM Personal Computer Guide" by Adam Osborne/Carroll S
Donahue consists of about 40 pages of lists of entry points and
addresses/labels for routines in the BASIC ROMs. It's not a disassembly,
but it would be great help to anyone trying to interpret one.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Hi Group:
Time for mid-summer cleaning. My logjam is getting far too big, and I need
to get rid of a bunch of stuff.
I am located in Vancouver, BC. Most of this stuff is large and/or heavy,
and therefore I will insist on pickup, or at least reasonable delivery
distance, say, within a couple of hundred miles.
Some items/systems, such as the pdp-11/60, are at a friend's house, and your
only option in this case, is to pick up. I will not ship 600+ lbs of gear
anywhere!
Please contact me via email (mcquiggi(a)remove-spamblock.sfu.ca) if you're
interested. I need to clear some space in the basement!
Here's the list:
1. Motorola 6800 development system. EXORcisor system unit, EXORdisk,
non-working SOROC dumb terminal. All manuals, some development boards,
some wirewrap boards. Circa 1975, a neat machine for those into early-PC.
2. Terminal, Tektronix 4017A, 16 colors, keyboard with pre-mouse rocker
pointer. All docs, working. Late 1970s, early 80s vintage.
3. Sun 3/60 system unit, ~150 MB HD and tape. Mono Sony monitor, keyboard,
no mouse.
4. Two Gandalf LDS140 low speed point-to-point modems.
5. MicroVAX 3100 model 10, 100 MB HD.
6. Boxes and boxes of 5.25" DSDD floppies.
7. TK50 tape drives, several, working condition.
8. Two BA23 MicroVAX/LSI-11 cases, no machine, just the plastic shell that
the machine fits into.
9. (Off Topic) Amateur radio gear: Henry 2002 "Tempo" 2 KW 2-meter linear;
Heathkit SB201A 2 KW linear, 80-15 meters.
10. pdp-11/60 computer system, several terminals, printers, disk drives, many
disk packs, tape drive (9 track 6250 bpi), software, documentation. Was
working before being put into dry storage a couple of years ago. This is a
_large_ system, main cabinet about the size of 2 full-size refrigerators,
total lot probably 1000 lbs. You'll need a truck!
That's all for now, likely more to follow.
Kevin
Here's the first draft at a list of the Top 150 Collectible Microcomputers
(from the U.S.A.). I would have gone for Top 100 but there are just too
many great machines, and 200 is too many.
It's currently at 133 items. Some related models are combined as one, even
though they are rather different... other similar models are kept separate.
This is basically just because I personally feel they rate their own
separate listing, feel free to disagree.
Please add items! Items on the list should meet the following categories:
1) Collectible Microcomputer (yes, I know the H-11 is on here as an
"honorary" micro)
3) Sold in the USA
4) Available from a manufacturer (not just plans in a magazine)
The list:
Altos 586
Altos ACS 8000
APF MP1000
Apple I
Apple II
Apple II+
Apple II+ Bell & Howell "Black Apple"
Apple IIc / IIc Plus
Apple IIe / IIe Platinum
Apple IIgs / IIgs Woz Limited Edition
Apple III
Apple III+
Apple Lisa / Macintosh XL
Apple Macintosh 128
Apple Macintosh 512K Through SE
Apple Macintosh Portable
AT&T Unix PC / 3B2 / 7300
Atari 400
Atari 800
Atari XL Series
Atari 520ST / 1040ST
Atari Portfolio
Byte Computers Byt-8
California Computer Systems (CCS) S-100
Coleco ADAM
Commodore/MOS Technologies KIM-1
Commodore PET 2001-8
Commodore PET 4032 / 8032
Commodore SuperPET SP9000
Commodore VIC-20
Commodore 64 / 65
Commodore 128 / 128D
Commodore C16 / Plus 4
Commodore SX64
Commodore Amiga 1000
Commodore Amiga 500
Compaq Portable PC / Plus / II / III
CompuColor II
CompuPro S-100 / 8-16
Convergent Technologies WorkSlate
Corvus Concept
Cromemco C-10
Cromemco System One
Cromemco System Three
Cromemco Z Series
Data General One
DEC Rainbow 100
Digital Group Systems
Dynalogic Hyperion
Epson HX-20
Epson PX-8 Geneva
Epson QX-10 & QX-16
Exidy Sorcerer
Gimix
Franklin ACE 1000 / 1200
Hewlett-Packard HP85
Hewlett-Packard HP150
Heathkit H-8
Heathkit H-11
Heath-Zenith H88/H89
IBM 5100 Personal Computer
IBM 5140 PC Convertible
IBM 5150 Personal Computer
IBM 5160 PC-XT
IBM 5170 AT
IBM 5155 Portable PC
IBM PCjr
IBM PS/2 Model 80
IMSAI 8080
IMSAI PCS-80
IMSAI VDP-80
Ithaca Audio InterSystems DPS-1
Intertec SuperBrain
Kaypro II
Kaypro 4 / 10
Lobo PMC-80
Mattel Aquarius
Mindset PC
MITS Altair 680
MITS Altair 8800
MITS Altair 8800a
MITS Altair 8800b
MITS Altair 8800b Turnkey
Morrow Decision 1
Morrow Micro Decision
Morrow Pivot
NEC PC-6001A
NEC PC-8001A
NEC PC-8201A / PC-5000
North Star Advantage
North Star Horizon
Ohio Scientific Challenger C1P
Ohio Scientific Challenger C4P
Ohio Scientific Challenger C3D
Osborne 1
Osborne Executive
Osborne Vixen
Otrona Attache
Polymorphic Systems POLY-88
Processor Technology SOL
Quasar/Panasonic HK2600TE Hand Held Computer
Radio Shack TRS-80 Model 1
Radio Shack TRS-80 Color Computers 1-3
Radio Shack TRS-80 Model 2
Radio Shack TRS-80 Model 3/4
Radio Shack TRS-80 Model 4P
Radio Shack TRS-80 Model 12 / 16 / 6000
Radio Shack TRS-80 Model 100 / 102 / 200
Radio Shack TRS-80 Micro Color Computer MC-10
Radio Shack TRS-80 Pocket Computers
RCA COSMAC 1802 / ELF / Super ELF
Rockwell AIM-65
Sanyo MBC-1000
Seattle Computer Products 8086
Sharp Pocket Computers PC-1500 / PC-1500A
Sinclair ZX80
Sinclair ZX81 / Timex-Sinclair ZX1000
Smoke Signal Broadcasting Chieftain
Spectravideo SV-318 / SV-328
Sphere
SWTPC (SouthWest Technical Products) 6800
SWTPC (SouthWest Technical Products) 6809
Synertek SYM-1
Texas Instruments TI 99/4A
Timex-Sinclair 1500
Timex-Sinclair 2068
Tomy Tutor
Vector Graphic Vector-1
Vector Graphic Vector-4
VideoBrain
Vtech Laser 128
Xerox 820
Zenith Z-110 / Z-120
Hey Hans:
We're grossly off topic here and I don't want to upset any of the classiccmp
folks (again), but here's my reply:
In a message dated 7/8/99 5:09:02 AM Eastern Daylight Time,
Hans.Franke(a)mch20.sbs.de writes:
> > Not to doubt your word, but as owner of a small PC repair shop, my
> experience
> > (and records) would suggest that the following components have a higher
> > failure rate than power supplies or their fans. In order from highest
> > failure rate:
>
> > 1) modems -- extremely susceptible to spikes -- our most common repair
>
> Modemfailure due spikes ? Just out of couriosity - do you still
> have telegraph like overhead single wire telephone connections
> and no protective devices in your area ? (Thats just the only
> way I can imagine to become the modems into #1 failing devices)
I live in Central Florida. To be honest I don't know what protective devices
the local phone company has. We do have old fashioned telephone poles. :>)
I do know this:
---> Central Florida is the lightning capitol of the world -- we get more
than anywhere else. :>(
---> July is peak lightning season.
--> Every summer from June to August, for the last seven years, we have sold
a huge (for us) number of modems, usually installing them in PCs which
contain burned-out modems.
--> I checked our files, and we have replaced more bad modems than any other
PC component.
Perhaps my logic is faulty so help me out here -- what would you conclude,
given the above data? Any suggestions as to what else might be killing all
these modems?
Regards,
Glen Goodwin
0/0
Hello from the Bay Area! Thanks to Chuck McManis, I now
have another MicroVAX III board set which will be put to many
useful purposes the moment I get home.
I have also acquired, in my scrounging travels, a Dilog DQ686
board. It appears to be a QBus ESDI controller. Confirm? Deny?
Drool?
I've also acquired two new-in-the-box DEC KRQ50 controller
kits. This is the kit required to put an RRD40 or 50 CD-ROM on a
MicroVAX or MicroPDP-11. It consists of an M7552 controller, the
cabinet and cable kit, a bus grant card, the external cable for the
CD-ROM drive, and an installation guide.
I'm going to keep one, but I will be placing the second one up
for bid on Haggle's 'Antique Computers' section once I get back to
the northwest (Sunday/Monday).
I'll be picking up a Northstar Horizon system this morning, so I
gotta scoot. Catch up to you all later.
-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner and Head Honcho
Blue Feather Technologies (www.bluefeathertech.com)
kyrrin(a)bluefeathertech.com
"...There's always a bigger fish..."
Remember when I was bitching about the S-100 having half a dozen or more
signals, any four of which would do the job? That's only true if the FP,
the CPU, and the target memory or peripheral agree on which signals those
are. That's not always the case. Some cards seem to prefer you use one
pair of signals as the active strobes with others as qualifiers, while
others require the concurrence of all before anything happens. It may be
that the memory doesn't think it's being written, or that it doesn't believe
the data is being gated onto the bus.
You might find it illuminating to reach in with a scope probe and see how
long the write and the select strobes are at the destination, and compare
them with the source.
Dick
-----Original Message-----
From: Bill Sudbrink <bill(a)chipware.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Thursday, July 08, 1999 4:58 PM
Subject: RE: IMSAI (moving along...)
>> Do you have prints for the cpu and FP? they are a must as you can
>> literally follow the signal forward or backward to the problem.
>
>For the front panel I have drawings of the board/traces, both
>solder and component sides. For the MPU-A I have nothing.
>Interestingly, I have the MPU-B Theory of Operation and Users
>Guide.
>
>Thanks,
>Bill
I accidentally posted this to the BSD Port-VAX list, so apologies if you
have seen it before......
I picked up, on behalf of the school here, 3 Vax 6000 machines last Monday,
>from my favourite scrapyard. ($300 for the lot)
This in now on topic, they are 1989 build, I think.:^)
Having searched for and never found a SCSI controller (apart from $$$$ new
ones) that would work in one, I was very pleased to find in a 6000-420 from
this lot, not one but THREE! CMD CBI-1000 VAXBI SCSI Controllers, 2 x /MB
(Disk only) and 1 x /TM Disk and/or Tape. I can now contemplate building
up one machine with all it's disk drives in the cpu cabinet. And my 4mm DAT
tape can now be cluster served again. Haven't been able to do that since
the strange Emulex Tape controller in the HSC50 died. (Well, the interface
in the enclosure with the 2 x DAT drives anyway, the HSC card is still ok I
think.
It emulated the DAT devices as TA78's to the Vax, (if you can imagine a 4 Gb
TA78) The surviving HP 4mm DAT is currently living in a VS4000-90, where it
works ok, but I'm not able to share it to the cluster, for some reason.
This lot includes:- 6420 with 128Mb of RAM and it's SCSI stuff - an XMI bus
only,
(never seen one of them before) 6440 with a DSSI controller, CI and
Ethernet, 196Mb of RAM(!) and a very tired 6240 with 96mb.
The 6240 has been dropped from a great height at some point and is really
bent, twisted and beaten up, (front door torn off) though it would probably
still run.
The 6440 is somewhat dinged, bent and scratched, ("body rough" I guess you'd
call it) but otherwise ok. The 6420 is fine apart from a few minor dings
and scratches. I'm spare parting the 6240, and probably the 6440.
Next week I have to go and pick up a retired, complete, CI based cluster,
that only came off DEC Maintenance in September 98, 1 x 6410, 1 x 6240, 2 x
HSC70, 2 x TA79, 1 x Star Coupler and stack of RA9x and RA7x drives in an
SA6?? cabinet. Direct from the owners. So they will be in mint nick. No
coin, just come and get it.
This is gonna be a big trip,(130 miles each way BTW) as I am towing a
trailer
behind the ute. It struggled a bit with the 3 x 6000's but if I lay some
stuff flat to reduce the
wind drag it should be ok.
Consequently, the school's lone 6320 is getting a major upgrade. It's now
fat with 256mb of RAM courtesy of the beat up 6440, and is going to get it's
CPU's and one of the CMD SCSI controllers and XMI based CI & Ethernet as
well. Plus we will have one complete spare machine ready to plug in.
The HSC50 will now retire to a working display I intend to set up and be
replaced by the HSC70.
I haven't figured out exactly what bit's will go where, but I'm counting on
2 or 3 Multi-CPU machines when the dust settles.
Some of the excess then comes to my private collection, so I will wind up
with a
multi-cpu box of my own, a 6260 with 128Mb and a SCSI controller if it all
works out - I will probably just update my existing 6220 to that level,
(since I've
already converted it to single phase) and have plenty of spare parts ;^)
BTW, anyone know how some good startup SYSGEN values for a 6000 that had
64mb originally and now has 256Mb? It runs Multinet 3.2 Rev B, WASD Web
Server/Proxy Server, MX mail, IUPOP3, Madgoat FTP, & only 2 or 3 interactive
users - me and the developer of WASD mostly - we're his beta site.
(The day to day file serving for the school is done by a Novell box.)
I can't see why I can't get it to a point where there are essentially no
page faults, considering the workload and available memory. I have bumped
up some of the PQL_xxxxxxxx Sysgen variables, but am really out of my depth
here. I have managed to make the correct changes in SYSGEN to have VMS 6.0
recognise all the memory, however, for some odd reason it won't accept -1 as
a variable in PHYSICALPAGES which should make it use (according to the VMS
FAQ anyway) all the memory it finds. I set it to 524288 and SHOW MEM says
256Mb so I guess it's happy.
But if I try SET PHYSICALPAGES = -1 SYSGEN says SYNTAX ERROR.
AUTOGEN? Last time I tried that, it hosed up the system so bad it took an
hour to get everything working again No idea what went wrong but I'm in no
hurry to try it again. When I get a second system up, I'll see if I can find
out what happened.
I'm reading the VMS tuning instructions, but the signal to noise ratio is
still rather on the high side at my level of comprehension.
Greetings from Country South Australia.
Geoff Roberts
VK5KDR
Computer Systems Manager
Saint Mark's College
Port Pirie, South Australia.
Email: geoffrob(a)stmarks.pp.catholic.edu.au
netcafe(a)pirie.mtx.net.au
ICQ #: 1970476
<On the MPU-A:
<Pin 68 has no connection, right at the card edge.
<Pin 77 goes to an 8T97 pin 9 (an output pin).
<
<Now that I look at it this way, this is VERY WEIRD!
<Maybe very bad? Does this mean that the CPU can not
<write to this memory card? Does the front panel
<arbitrate pin 68 for the CPU?
Arbitrate is the wrong word. PWR/ is generated by the CPU as is
SOUT, those combine in the front pannel to make MWRITE. Mwrite
is used to deposit front pannel data in ram and the cpu data to
ram. Most memories use Mwrite to write data but some will
use PWR/ and SOUT instead (for non frontpannel systems).
I belive the ram you are using wants Mwrite.
So you need to see if there is activity on the mwrite line (68)
If it's there when you hit deposit then look at sout and PWR/
on the bus.
Do you have prints for the cpu and FP? they are a must as you can
literally follow the signal forward or backward to the problem.
Or if you have BURSKY, Hayden books THE S100 BUS HANDBOOK that
will do as it has the IMSAI prints in it.
Allison
<This is only true for overhead lines, and not when they are buried under
<the street, correct? Actually, some of the main lines are fiber-optic now,
<which shouldn't carry a surge.
True to a point but, at some time the fiber becomes copper and there is
the source of risk.
A hit to a local tree can charge the ground that the copper passes through
and deliver a common mode bash to whatever is connected to it. Common
mode is when both leads are at the same potential but manyto many volts
above "Ground". This is very common with lightening. Shielded cable
is no help as the shield (at over 10,000 AMPS) can carry a very big
potential above around as well!
Keep in mind surge protectors are for small surges, lightining is a
very big surge and I've seen it melt 000 guage copper like it was
warm butter. The hit that did that cooked my NS* the first time
was a direct one to a roof antenna. the ground for that antenna was
000 copper. The second time that happend it was in a different place
and it hit the pole a half mile down thre road were it went underground
and though power and phone came in from underground... damm, not again!
Allison
Hi gang,
I'm back again. I've taken alot of pictures lately.
http://users.leading.net/~dogas/homebrew.html
This is a beautiful *old* s100 homebrew system built around a Tinker
Toys Wunderbus. It has 2 8" drives, 2 Exatron stringy floppies, a (I think)
wire-wrapped (George Morrow ???) front panel board...
http://users.leading.net/~dogas/b4.html
This is my only minicomputer, a Basic/Four. Also there are pictures of
the terminal, inside the back, a few dual 8" systems, etc.... I'll go out
on a limb and ask if anyone has any software for this. :)
:)
- Mike: dogas(a)leading.net
