Okay!
Should I grab the iron and change pin 1 to 7?
Signal ground is currently floating
Sent from my iPhone
On Feb 12, 2015, at 13:59, Peter Lothberg <roll at Stupi.SE> wrote:
Cory,
When you have sorted out the console thing, do:
NSP>show cpu assIGNMENT
CPU0 has the following channels assigned:
No IU channels
RH channels:
LOGICAL ACTUAL TYPE MISCELLANEOUS
5 CHN1 EI
0 CHN0 SI MASK=0x03
1 CHN2 SI MASK=0x03
7 CHN3 CI PORT#=0x3
DTEs:
LOGICAL ACTUAL TYPE MISCELLANEOUS
0 FE PRIVILEGED
and
NSP>dir
-P
Cory,
When you have sorted out the console thing, do:
NSP>show cpu assIGNMENT
CPU0 has the following channels assigned:
No IU channels
RH channels:
LOGICAL ACTUAL TYPE MISCELLANEOUS
5 CHN1 EI
0 CHN0 SI MASK=0x03
1 CHN2 SI MASK=0x03
7 CHN3 CI PORT#=0x3
DTEs:
LOGICAL ACTUAL TYPE MISCELLANEOUS
0 FE PRIVILEGED
and
NSP>dir
-P
Twisted cable...sorry. Pin far left with cable mated, looking at the mate is ground.
Sent from my iPhone
On Feb 12, 2015, at 13:23, Cory Smelosky <b4 at gewt.net> wrote:
None of the pins on the connector are ground. That'd explain some things.
Sent from my iPhone
On Feb 12, 2015, at 13:22, Peter Lothberg <roll at Stupi.SE> wrote:
Straight gives me gibberish, null gives me output. I'll find my straight.
FWIW, if the SC40 is wired like a "real" DEC computer, then a null modem
cable would be required between the console DB25 and a VTxxx.
If the wiring (ground) was even close to correct, either crossed or non
crossed should give NO characters. -:)
--P
Straight gives me gibberish, null gives me output. I'll find my straight.
FWIW, if the SC40 is wired like a "real" DEC computer, then a null modem
cable would be required between the console DB25 and a VTxxx.
If the wiring (ground) was even close to correct, either crossed or non
crossed should give NO characters. -:)
None of the pins on the connector are ground. That'd explain some things.
Two options:
- A cable is loose/bad
- In it's previus life someone had a ground loop, eg, like if
you plug the SC40 in to a non-grounded plug and the terminal is
grounded.
Suggest you solve this problem, trace pin 7 back to the sparc board.
---P
None of the pins on the connector are ground. That'd explain some things.
Sent from my iPhone
On Feb 12, 2015, at 13:22, Peter Lothberg <roll at Stupi.SE> wrote:
Straight gives me gibberish, null gives me output. I'll find my straight.
FWIW, if the SC40 is wired like a "real" DEC computer, then a null modem
cable would be required between the console DB25 and a VTxxx.
If the wiring (ground) was even close to correct, either crossed or non
crossed should give NO characters. -:)
--P
Straight gives me gibberish, null gives me output. I'll find my straight.
FWIW, if the SC40 is wired like a "real" DEC computer, then a null modem
cable would be required between the console DB25 and a VTxxx.
If the wiring (ground) was even close to correct, either crossed or non
crossed should give NO characters. -:)
--P
On Feb 12, 2015 12:44 PM, "Cory Smelosky" <b4 at gewt.net> wrote: > On Feb 12, 2015, at 12:42, Peter Lothberg <roll at Stupi.SE> wrote: > > >> What kind of console terminal plug is on the SC40? > > > > SC30 a DB25 hanging in twisted pair wire_wrap cables..... > > SC40 a DB25 on the panel, wired perfetly normal, a stright > > male-female cable would plug a vt100 right in. > > Straight gives me gibberish, null gives me output. I'll find my straight. >
You've got cabling issues. Using a straight cable when you actually need a "null modem" cable should result in nothing, not gibberish.
I'm betting Bob Armstrong is correct.
Jim
Straight gives me gibberish, null gives me output. I'll find my straight.
FWIW, if the SC40 is wired like a "real" DEC computer, then a null modem
cable would be required between the console DB25 and a VTxxx.
Bob
Sent from my iPhone
On Feb 12, 2015, at 12:42, Peter Lothberg <roll at Stupi.SE> wrote:
What kind of console terminal plug is on the SC40?
SC30 a DB25 hanging in twisted pair wire_wrap cables.....
SC40 a DB25 on the panel, wired perfetly normal, a stright
male-female cable would plug a vt100 right in.
Straight gives me gibberish, null gives me output. I'll find my straight.
On 2015-02-12 18:29, Dave McGuire wrote:
On 02/12/2015 12:23 PM, Johnny Billquist wrote:
Console TRANSMIT is fine...but RECEIVE is receiving gibberish from my
end...can't figure out why. ? works, every other symbol is either | } or
w or y.
Makes it a liiiiiittle hard to boot.
Sigh... I suspect the standard problems. Check your character length,
parity, stop bits...
Have people totally forgotten how to use a serial line???
Please give Cory a bit more credit than that, man. Seriously. This
guy has gotten some truly outlandish systems up and running in no time
with almost no assistance. He wrangles serial lines with the best of 'em.
Sorry. It's just that sometimes my patience runs thin. And the video just shows someone who is trying totally random things without giving me any impression he knows at all what he is doing.
I'm probably just expecting things at a level you don't see anymore.
Johnny
