>
>I have tried and failed to get a successful connection between my uvax II and
> a pc rs-232 serial port. The H8751-B didn't seem to work, so I pulled it of
>f and wired my own MMJ-DB9 connector. I have tested the MMJ cable, and it
>works flawlessly.
>
>[snip]
>
I didn't really follow your description of what you have tried. I suspect the
DE9 connector you have is not wired for plugging into a pc serial port but is
intended for a DE9 connector on some DEC equipment which is wired differently
(a VAX 2000 for example).
My suggestion for an MMJ to other serial device connection is as follows:
Cut an MMJ to MMJ cable in two. Take one end and strip off a bit of the outer
insulation. Strip back the two centre conductors and join them together and to
signal ground on the pc side. Strip back the next two outer conductors
and connect one to TX on the pc and the other to RX on the pc. Ignore the two
outer conductors.
Plug in and test. If it doesn't work, swap the conductors going to TX and RX
and try again.
Regards,
Peter Coghlan.
Hi! Several builders have asked about the XT-IDE V2 PCBs and I have
reordered a batch. They should be here the second week of August. They
will be identical to the previous batch of boards. I will announce when the
PCBs arrive. Please do not send any funds until the boards arrive.
They will be $12 each plus $2 shipping in the US and $5 shipping elsewhere.
After I announce the boards have arrived please send a PayPal to
LYNCHAJ at YAHOO.COM and I will send your boards right away!
Thanks and have a nice day!
Andrew Lynch
sometime ago when I offered a non-working unit. I have one, the only problem is it's missing the plastic "whistles", or at least that's what they resemble, that allow you to set it at an angle on a table. I don't think I have them anywhere unfortunately. If you're interested, as is, should work (it was my original!), 5$ plus shipping from 08758.
Hi! Some of the N8VEM builders have gotten their N8's assembled and tested.
They are working fairly well and the new SD circuitry seems to check out
fine.
There is a new MSX BIOS and CP/M ROM image posted and photos of one of the
builds on the wiki. There is actually quite a bit of information and
ongoing discussions on the N8VEM mailing list. Here is a sample photo one
of about a dozen or so.
http://n8vem-sbc.pbworks.com/w/file/55421880/NS-2312_working_with_Floppy_DSK
Y.JPG
http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=N8-2312%20Marti
n%20Lukasek
I still have some N8 PCBs so if anyone would like to build their own
complete home brew computer from scratch please let me know. Please see
the N8 description below for what it can do.
http://n8vem-sbc.pbworks.com/w/page/54039670/N8%20announcement
Thanks and have a nice day!
Andrew Lynch
Hi everyone,
we have finally received our first Nova. It was installed in a classroom
at a school where they taught some basics of computer science. They bought
it new in 1978 and used it until 1986. All parts still look like new, no
obvious yellowing or worn fronts. The system consists of the Nova 3/12 and
6050-2 cartridge disk drive in a 19" high-boy cabinet and two terminals, a
Dasher 6042 printing terminal and a Dasher 6052-2 CRT terminal - both have
a very cool design!
Now to my question ;-) The system came with several cartridges
(containing RDOS and BASIC, as far as I can tell), but *no* manuals. I
haven't found any manual for our system components on the net (nothing on
bitsavers, too). Does anyone have scans/images? I would need at least the
Nova 3 printset and diagnostics (e.g. papertape images) in case it needs
repair or maintenance. After all, even if the power supply and CPU seem to
work, I'd like to be sure everything is ok after 26 years. (The former
user, a teacher, didn't even know that you could dismantle the rack, nor
did he ever pull out the CPU or the power cable from the rack...).
Christian
PS:
Repairing the key switches in the terminal keyboards (disintegrated
foam) is another story...
It looks like I'm back in business collecting vintage computers. I went to the town dump today and found what looks like an H89 but the model number tag on the back says NN89-29. I haven't tried opening it up to see what's inside yet but it has a floppy drive so I assume it isn't just a H19 terminal. Also, on the front it says "Heathkit Computer". Even though I've had vintage computers before I've never followed good procedures when trying to bring them up. Usually, I just plug in the power cord and hope for the best. I'd like to do a little better this time. Can anyone suggest an approach to bringing this beast to life that minimizes the chances that I'll fry it the first time I power it on?
Thanks,
David
I have some of what you may need, but will need to scan it in. I do not have a full print set - unlike Dec, those are more rare in the dg world. But I won't be able to do anything until mid august. Check bitsavers.org, and also contact wildharecomputers.com
Christian Corti <cc at informatik.uni-stuttgart.de> wrote:
>Hi everyone,
>
>we have finally received our first Nova. It was installed in a classroom
>at a school where they taught some basics of computer science. They bought
>it new in 1978 and used it until 1986. All parts still look like new, no
>obvious yellowing or worn fronts. The system consists of the Nova 3/12 and
>6050-2 cartridge disk drive in a 19" high-boy cabinet and two terminals, a
>Dasher 6042 printing terminal and a Dasher 6052-2 CRT terminal - both have
>a very cool design!
> Now to my question ;-) The system came with several cartridges
>(containing RDOS and BASIC, as far as I can tell), but *no* manuals. I
>haven't found any manual for our system components on the net (nothing on
>bitsavers, too). Does anyone have scans/images? I would need at least the
>Nova 3 printset and diagnostics (e.g. papertape images) in case it needs
>repair or maintenance. After all, even if the power supply and CPU seem to
>work, I'd like to be sure everything is ok after 26 years. (The former
>user, a teacher, didn't even know that you could dismantle the rack, nor
>did he ever pull out the CPU or the power cable from the rack...).
>
>Christian
>
>PS:
>Repairing the key switches in the terminal keyboards (disintegrated
>foam) is another story...
