Hi Toby,
Toby Thain wrote:
I think Jon is probably on to something.
You can check out the delays in my PIO bit-banging code here:
http://www.telegraphics.com.au/svn/picide/trunk/
I tested it on a few drives & spent a lot of quality time with the
spec...of course I can't guarantee it would
A few years ago I entered the schematics and laid out a design for the
serial board option for the TRS-80 PT-210 printing terminal using gEDA.
I found the schematics in a hardcopy of the service manual[1]. I
revisited the project a couple of days ago and reentered the schematics
into Kicad.
On Sun, Dec 6, 2015 at 7:35 PM, Mark Wickens wrote:
>
> I think I found it:
>
> http://i.ebayimg.com/00/s/MTAxN1g3Mzg=/z/1AwAAOSwpDdVIqur/$_57.JPG
>
> Practical Computing March 1982!
Great! How did you find it?
Jim
I think I found it:
http://i.ebayimg.com/00/s/MTAxN1g3Mzg=/z/1AwAAOSwpDdVIqur/$_57.JPG
Practical Computing March 1982!
Mark.
On 25/11/15 15:40, Eric Christopherson wrote:
On Tue, Nov 24, 2015 at 5:48 PM, Mark Wickens
wrote:
OK so this has been bugging me for a while. During a stint workin
There's one open FPGA toolchain out there, and it's for Lattice iCE40 FPGAs.
http://www.clifford.at/icestorm/
David
Sent from my iPhone
> On Dec 6, 2015, at 5:10 PM, ben wrote:
>
>> On 12/6/2015 8:39 AM, Tor Arntsen wrote:
>>> On 24 November 2015 at 22:42, Mouse wrote:
>>>
>>> What I was rea
On 12/6/2015 8:39 AM, Tor Arntsen wrote:
On 24 November 2015 at 22:42, Mouse wrote:
What I was really interested in was whether the FPGA itself was open.
If so, I definitely would have wanted to pick up the hardware, because
I would love to experiment with an FPGA - but I am _not_ going to put
I'm not sure what you are asking. But a PDP-12 sold north of
15k dollars:
http://www.ebay.com/itm/161199469414
/P
On Sun, Dec 06, 2015 at 09:16:45AM -0500, Michael Thompson wrote:
> The PDP-12 donor to the RICM needs an appraisal for the charitable donation.
> I already suggested Vintage Tech.
On 24 November 2015 at 22:42, Mouse wrote:
> What I was really interested in was whether the FPGA itself was open.
> If so, I definitely would have wanted to pick up the hardware, because
> I would love to experiment with an FPGA - but I am _not_ going to put
> up with running a vendor binary blo
The Evotek drive initially used the notoriously unreliable Ampex Alar plated
media; whether they ever upgraded to sputtered media is uncertain. It probably
should be avoided.
I would look for an replacement drive using oxide media. The nice thing about
oxide media is it came pre-corroded so t
On 2015-12-06 4:14 PM, Oliver Lehmann wrote:
Jon Elson wrote:
On 12/06/2015 02:57 PM, Oliver Lehmann wrote:
Hi,
I've built a Harddisk-Controller-Emulator for my system which accesses
a IDE (PATA) harddisk with an ATMega in PIO mode. It works like a charm
except for one WD harddisk. The hard
Jon Elson wrote:
On 12/06/2015 02:57 PM, Oliver Lehmann wrote:
Hi,
I've built a Harddisk-Controller-Emulator for my system which accesses
a IDE (PATA) harddisk with an ATMega in PIO mode. It works like a charm
except for one WD harddisk. The harddisk itself works fine with MS-DOS
6.22 and Fr
On 12/06/2015 02:57 PM, Oliver Lehmann wrote:
Hi,
I've built a Harddisk-Controller-Emulator for my system
which accesses
a IDE (PATA) harddisk with an ATMega in PIO mode. It works
like a charm
except for one WD harddisk. The harddisk itself works fine
with MS-DOS
6.22 and FreeBSD but refuses
Hi,
I've built a Harddisk-Controller-Emulator for my system which accesses
a IDE (PATA) harddisk with an ATMega in PIO mode. It works like a charm
except for one WD harddisk. The harddisk itself works fine with MS-DOS
6.22 and FreeBSD but refuses to work with my ATMega.
On reading or writing a s
On 12/06/2015 10:24 AM, Mark G. Thomas wrote:
As much as I love old CPUs, I've lost my patience with hard disk
drives.
Same here--using an old system that's brought out only once every few
years only to have its hard drive quit working (or working after a few
smart raps on the HDA with a sm
Hi Devin,
I upgraded my 3300 to a KA660 CPU and a CQD SCSI controller. If you
are patient, sometimes QBUS SCSI controllers show up on e-bay much
cheaper than the reqularly listed several hundred dollar ones. I
paid around $75.
As much as I love old CPUs, I've lost my patience with hard disk dri
>On Friday, December 4th, 2015 at 11:41 A.M. GMT (6:41 A.M. EST) Rod
Smallwood wrote:
Hello All
Well I managed to find some suitable rubber tubing and
glued it in place of the nasty black mess.
So I put everything back and turned on. Lo and Behold LED on the board
flashed once
The PDP-12 donor to the RICM needs an appraisal for the charitable donation.
I already suggested Vintage Tech.
Any other suggestions?
--
Michael Thompson
Last month I made a trivial little cable adapter PCB to use with the
Intel SBC 202 double-density M2FM floppy controller in an Intel Series
II or III MDS (normally part of an MDS 720 subsystem). The usual SBC
202 cabling has two DC37S connectors on the MDS back panel, one for
drives 0 and 1, and th
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