| 1571 with X/XE1541 Cable [message #137559] |
Wed, 27 April 2005 21:38  |
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Originally posted by: petela
I'm trying to get a 1571 drive to communicate with my PC to transfer
some disk images. I've tried the XE1541 and the X1541, but it doesn't
seem to work.
I initially used X1541Test to make sure my parallel port was compatible
(I used the 2 resistor loopback), and I've tried the XCTest. With
XCTest, I've made the following observations:
With the XE1541 cable:
No cable: All inputs high, regardless of output.
Cable, but no drive: All outputs follow inputs
Cable, with drive off: All inputs low, regardless of output.
Cable, with drive on: All inputs follow outputs, except Clk. Clk is
always low.
With the X1541 cable:
No cable: All inputs high, regardless of output.
Cable, but no drive: All inputs high, regardless of output.
Cable, with drive off: All inputs low, regardless of output.
Cable, with drive on: All inputs follow outputs, except Clk. Clk is
always low.
I also did the voltage test at the end of the XCTest document. At the
DIN end of the cable, all outputs match as expected. At the DIN output
of the drive, pin 4 (CLK) is always low.
I've used PS/2 with both the XE and X1541 cables. And also ECP with
the XE1541.
Any idea what the problem could be?
Thanks,
Pete
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| Re: 1571 with X/XE1541 Cable [message #137560 is a reply to message #137559] |
Thu, 28 April 2005 08:38  |
sta
Messages: 243
Registered: July 2003
Karma: 0
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Senior Member |
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Hi Pete,
> With the XE1541 cable:
>
> No cable: All inputs high, regardless of output.
> Cable, but no drive: All outputs follow inputs
Correct.
> Cable, with drive off: All inputs low, regardless of output.
This is not good as a switched off drive shouldn't pull the lines low!
Am I right, people?
> Cable, with drive on: All inputs follow outputs, except Clk. Clk is
> always low.
Not good. Either the cable is improperly assembled or Clk is stuck low
in your drive. For the former, check it against the circuit diagram at
http://sta.c64.org/xe1541c.html ; for the latter, connect the drive to a
Commodore machine.
> With the X1541 cable:
>
> No cable: All inputs high, regardless of output.
> Cable, but no drive: All inputs high, regardless of output.
You've misconfigured the cable type. All inputs should follow their
respective outputs.
> Cable, with drive off: All inputs low, regardless of output.
> Cable, with drive on: All inputs follow outputs, except Clk. Clk is
> always low.
With a misconfigured cable type, these results have no meaning...
> I also did the voltage test at the end of the XCTest document. At the
> DIN end of the cable, all outputs match as expected. At the DIN output
> of the drive, pin 4 (CLK) is always low.
Well, then the CLK Out _is_ stuck at low in your drive. You might wanna
test it again, without any cable connected to the drive, just to make
sure that _this_ is the problem...
I think some of your questions are already covered by the XCTest docs,
which has been designed - in theory - to provide a do-it-yourself test
that shows every problem and suggests a solution, too. If you don't think
so, and have some suggestions to improve the docs, please, drop me an
E-mail. Thanks,
Joe
--
KOVÁCS Balázs alias Joe Forster/STA sta@c64.org; http://sta.c64.org
Don't E-mail spam, HTML or uncompressed files! More contacts on homepage
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| Re: 1571 with X/XE1541 Cable [message #137597 is a reply to message #137560] |
Mon, 02 May 2005 19:59 |
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Originally posted by: petela
After much wailing and gnashing of teeth, the problem is solved. And,
of course, the problem was in the construction of the cable. I had the
connections on the DIN side incorrect. And it was because I wasn't
clear on the construction.
I wasn't sure which end of the connector was being referred to when
soldering the leads to pins 2-6. So I guessed. And Murphy's law
dictated that I pick the wrong end. Of course, had I read more closely
the lengend saying that the 6-pin DIN "is displayed on the diagram as
viewed from the back side of the Commodore drive or the adaptor," I
would have picked the correct one.
Perhaps a note on the X-cable construction pages about the orientation?
At least a warning to get it correct and an explicit reference to the
legend? I know I was the dumbass here, but I just thought it would
save other from the same problems.
Thanks for the reply, and especially for the cable and software!
Pete
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| Re: 1571 with X/XE1541 Cable [message #137598 is a reply to message #137597] |
Tue, 03 May 2005 01:30 |
Jeremy Sieracki
Messages: 56
Registered: September 2003
Karma: 0
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Member |
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> I wasn't sure which end of the connector was being referred to when
> soldering the leads to pins 2-6. So I guessed. And Murphy's law
> dictated that I pick the wrong end. Of course, had I read more closely
> the lengend saying that the 6-pin DIN "is displayed on the diagram as
> viewed from the back side of the Commodore drive or the adaptor," I
> would have picked the correct one.
> Perhaps a note on the X-cable construction pages about the orientation?
> At least a warning to get it correct and an explicit reference to the
> legend? I know I was the dumbass here, but I just thought it would
> save other from the same problems.
Too late for the warning in my case, lol, I too got mine backward, but a
quick
check after discovering failure I flipped them around and success, works
great,
At least getting them backwards provided no damage to the equipment,
Jeremy
jeremysieracki@charter.net
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| Re: 1571 with X/XE1541 Cable [message #137600 is a reply to message #137559] |
Wed, 04 May 2005 07:18 |
tutu
Messages: 111
Registered: April 2013
Karma: 0
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Senior Member |
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petela@gocougs.wsu.edu schrieb:
> I'm trying to get a 1571 drive to communicate with my PC to transfer
> some disk images. I've tried the XE1541 and the X1541, but it doesn't
> seem to work.
Which motherboard? With an Asus I had some problems too. The XA1571
Cable should help in this case.
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| Re: 1571 with X/XE1541 Cable [message #137601 is a reply to message #137600] |
Wed, 04 May 2005 17:16 |
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Originally posted by: petela
Martin Brunner wrote:
> petela@gocougs.wsu.edu schrieb:
>
>> I'm trying to get a 1571 drive to communicate with my PC to transfer
>> some disk images. I've tried the XE1541 and the X1541, but it
doesn't
>> seem to work.
>
> Which motherboard? With an Asus I had some problems too. The XA1571
> Cable should help in this case.
It wasn't a mb problem, it was a "user was a dumbass" error. It works
great with both PC's I've tried. Both are older vintage Dells (PIII
800 and PII 300).
Pete
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