Has anyone else come across this? My TK70 wouldn't eject, and having not
had one before, I didn't know just how tactile the unload button should be.
After further examination and prodding, I determined that the button was
pretty much stuck and refused to come out.
Taking the front off and exposing the board indicated that the button seems
to originally have been rubber, which is now a nice black tarry goo. I
think I can replace the button with a standard tactile push button, this
time without any rubbery material.
Hopefully that's my only issue.
http://i.imgur.com/9Fqb0SB.jpghttp://i.imgur.com/AxstKpq.jpghttp://i.imgur.com/PCFCfwH.jpg
Kyle
This is off topic, so-to-say, but computer languages can be esoteric:
It's the 150 anniversay of L. Carroll's "Alice's Adventures in
Wonderland." May I dare say most people, including myself here(I
studied languages like BASIC, COBOL & PL/C, know very little about the
programming languages that make old & new computers do what we wish
looking backwards? Logic, like "Alice's...", can elude us at any
time...
Happy computing.
Murray :)
I'm making good progress on the MEM11 firmware. I spent the last few days
re-doing the firmware build environment. Previously, it would build all the
files each time. Now there is a proper Makefile (even though it takes about
a minute to build everything). I realized that I needed something
better than
what I had because there are multiple targets (emulator, FPGA eval board and
the MEM11 board itself). Right now I'm focused on getting as much debugged
on the emulator since it has a reasonable debuging environment.
I've also integrated various test programs into the build environment
and use
various low level code as part of the main firmware for hardware access.
This "kills two birds with one stone" since it tests not only the
various hardware
functions it also allows me to debug some of the firmware separately from
the full code base.
At this point, the emulator fully supports all of the J1 instructions
(and they
all work too!). In terms of I/O (that will be part of the MEM11 board) it
supports LEDs and various configuration inputs, FRAM, UART and timers.
The biggest risk that I'm taking is that the UART is emulated as being
directly exposed. On the MEM11 hardware, the UART will be connected
through a SPI interface which requires that all accesses to the UART are
asynchronous transactions.
The biggest piece of work remaining on the emulator will be emulating the
Unibus interface. The work here will mainly to create a means to script
various Unibus transactions.
However, before doing that, I'll be testing out the boot loader code and
the configuration firmware since none of that is dependent upon the
existence of functional Unibus hardware.
TTFN - Guy
Folks,
Possibly a long shot since I think the MPF was only a UK/Europe thing but
I'll quite happily be proved wrong. I've had a chap asking for a scan of
one of my manuals that would necessitate partial destruction. Anyone got
the IOM-MPF manual? It's a 6k RAM expansion board for the MicroProfessor
MPF-1P seen on my site here:
http://binarydinosaurs.co.uk/museum/multitech/iom-mpf.php
(Ironically today I'm working in a building that has a proper book scanner,
but all the staff that operated it were 'let go' earlier this year)
Cheers
--
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest home computer collection?
www.binarydinosaurs.co.uk
It's time to start on the Data General stuff I've had forever but not yet
restored :) This time much of it has finally made its way into the workshop
so perhaps there will be some progress.
Pictures of the initial set of racks to work on are at
https://www.flickr.com/photos/131070638 at N02 , but there's more DG racks with
devices that can be used at both houses.
Trying to decide where to start really, and what pieces to use and what to
trade off (I'm not really familiar with DG stuff, yet).
At the least, I know I don't want/need the large FPS (Floating Point Systems
model 100R) box. Anyone have interest in that part?
If folks have docs that might help but are private, I'd appreciate a little
access or pointers. My initial questions revolve around what boards from the
Nova 4, S/130, and S/200 can be interchanged if desired, I'm still trying to
decide which cpu to keep and which peripherals. Time to read what docs I
have and scrounge up ones that I don't!
I know I got keys with these systems, but don't see them anywhere. The
6021/6023 tape drive uses vacuum columns, that will be fun. The TP1 is an
awfully cool retro printing terminal. The 5821NT terminal has (by a large
margin) the worst screen rot I've ever seen. The 6125 tape drive is in an
odd "desktop" stand like I haven't seen before.
Let the fun commence.
J
VCFMW is over, and I wanted to give a huge CONGRATS to Jason for the
resulting show that he put on. Most of you will recall it was originally at
Purdue, then was moved to Heron Point (IL). That venue was no longer
available, so Jason scouted out a new venue (Holiday Inn) in Elk Grove
Village, IL. Simply put, the show could not have gone better. The facilities
were top-notch, a fairly good restaurant attached, and it worked out very
well. I - as well as a few others - were extremely grateful for the big
double doors that enter the venue directly from the parking lot (with no
'bumps') for bringing in "big iron", and there was pretty AMPle electrical
service for my HP2000 as well as Ian's 11/23 (and a handful of pdp-8's as
well). Not to mention all the other exhibits. power wasn't a problem. I've
always enjoyed the show at Heron Point, but this year the "bar was raised".
Kudos to Jason!
There was of course a substantial commodore and some apple presence, and I
really enjoyed seeing how many of those folks are taking those machines
"into the modern age". My own personal favorite exhibit was DJ's ASR 33
Teletype (a fully working mint condition restoration - GREAT JOB DJ), and
the altair 680 and accessories that were driving it. While that was my
favorite exhibit, every exhibit had something to offer. I like the altoids
can 1802 :)
I've been to VCF west, as well as VCF east, and they are both great events.
I personally make a point of getting to VCFMW every year, and look forward
to the event next year. I highly encourage folks that have not been to a
VCFMW yet to give it a shot. Bring something to exhibit, or just take in the
show; enjoy the comradery and meet new folks as well.
Jason - fantastic job, it was a great event!
Best,
J
I can boot to VAX/VMS 5.4-2, but on startup, I see this message:
%DCL-E-OPENIN, error opening DUB0:[RS1R4]RS1LOG.COM; as input
-RMS-E-DNR, device not ready, not mounted, or unavailable
%DCL-E-OPENIN, error opening DUB0:[ORACLES]ORAUSER.COM; as input
-RMS-E-DNR, device not ready, not mounted, or unavailable
%DCL-E-OPENIN, error opening DUB0:[ECMS4]LOGIN.COM; as input
-RMS-E-DNR, device not ready, not mounted, or unavailable
Okay, so DUB0: isn't mounted, I guess.
ROHIT1$ show dev
Device Device Error Volume Free
Trans Mnt
Name Status Count Label Blocks
Count Cnt
R7CY2A$DIA0: Mounted 0 VMS54_2DISK 173289
134 1
ROHIT1$DUB0: Online 0
ROHIT1$DUB1: Online 0
ROHIT1$DUC10: Online 0
Device Device Error Volume Free
Trans Mnt
Name Status Count Label Blocks
Count Cnt
ROHIT1$MUA0: Online 0
Device Device Error
Name Status Count
FTA0: Offline 0
OPA0: Online 0
TWA0: Offline 0
Device Device Error
Name Status Count
IKA0: Offline 0
IMA0: Offline 0
INA0: Offline 0
PTA0: Online 1
PUA0: Online 1
PUB0: Online 2
PUC0: Online 2
PYA0: Offline 0
SJA0: Online 0
SJA1: Online 0
WSA0: Offline 0
XQA0: Online 0
Looks like they're online but not mounted. If I'm reading the help pages
correctly, I should just be able to mount it at this point:
ROHIT1$ mount dub0: disk0
%MOUNT-F-INCVOLLABEL, incorrect volume label
-MOUNT-I-VOLIDENT, label = 'USER01 ', owner = ' ', format =
'DEC
FILE11B '
I tried giving it the correct label, but it still didn't seem to mount. Now
I wanted to see if the MSCP server is running:
ROHIT1$ show device/served
MSCP-Served Devices on ROHIT1 1-SEP-2015 10:55:19.39
Queue Requests
Device: Status Total Size Current Max Hosts
%SHOW-E-MSCPNOTLD, MSCP-Server code not loaded
No, it doesn't look like it...so getting back to the >>> prompt, I do a bit
more investigation:
>>>show dev
UQSSP Disk Controller 0 (772150)
-DUA0 (RF71)
UQSSP Disk Controller 1 (760334)
-DUB0 (RA81)
-DUB1 (RA81)
UQSSP Disk Controller 2 (760340)
-DUC10 (RA81)
UQSSP Tape Controller 0 (774500)
-MUA0 (TK70)
Ethernet Adapter 0 (774440)
-XQA0 (08-00-2B-17-3F-37)
I should be able to get to the PARAMS> prompt now:
>>>set host /dup/uqssp/disk 1 params
Starting DUP server...
UQSSP Disk Controller 1 (760334)
Stopping DUP server...
>>>
Or not? Why can't I seem to get to the prompt? I can with disk 0:
>>>set host /dup/uqssp/disk 0 params
Starting DUP server...
UQSSP Disk Controller 0 (772150)
Copyright 1988 Digital Equipment Corporation
PARAMS> show allclass
Parameter Current Default Type Radix
--------- ---------------- ---------------- -------- -----
ALLCLASS 0 0 Byte Dec B
PARAMS>
Can't seem to get to PARAMS> with disk 2 or tape 0 either. Only disk 0
seems to work.
Can anyone provide any suggestions? I'd like to see what else is on the
system. Pictures here: http://imgur.com/a/WYGra
Thanks,
Kyle
Hi all,
I am trying to identify why my IBM 5151 display has no picture when
connected to a normal MDA card in a IBM PC 5150. So armed with an
oscilloscope, digital multi-meter and the SAMS Computerfacts for it I
started to investigate. First, the card does send out signal and that
signal does reach the board inside the monitor. I checked the power
part of the circuit, all diodes and the transistor check fine. I
probed some of the vertical and horizontal transistors and there is a
signal there too. Then on the video board both TR19 and TR20 have on
their collector and emitter (respectively) a signal (95Khz). What else
can possibly be wrong?
The SAMS manual talks about "injecting a video signal" at different
pins however I have no idea exactly how to do that.
So there is current going out of the power part and there is signal on
the video board attached to the neck of the CRT.
Regards,
Vlad.
