| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 391.1 | | LDP::WEAVER | Laboratory Data Products/Science | Wed Feb 08 1989 10:39 | 11 |
| Sometimes when building cables you need to drive pins 6 & 8 from
pin 20. The AMSTRAD may be looking for both the DSR and CD signals
to be asserted (DSR - data set ready, pin 6, CD - carrier detect,
pin 8, if memory serves me correctly).
Also, see what kind of flow control is being used, if the Atari
is setup for RTS/CTS handshaking, then it is expecting the AMSTRAD
to use pins 4 & 5 for flow control. Try disabling flow control
and see if it starts transferring data.
-Dave
|
| 391.2 | | PRNSYS::LOMICKAJ | Jeff Lomicka | Wed Feb 08 1989 11:43 | 7 |
| Without a doubt, you must cross 2 and 3
2----\ /----2
X
3----/ \-----3
if these are serial lines.
|
| 391.3 | | LDP::WEAVER | Laboratory Data Products/Science | Wed Feb 08 1989 18:54 | 8 |
| Re: .2
But he did that, he just drew it differently.
2 ----------- 3
3 ----------- 2
-Dave
|
| 391.4 | | LDP::WEAVER | Laboratory Data Products/Science | Wed Feb 08 1989 18:58 | 11 |
| If all else fails, try using KERMIT to initially send the files.
That will tell you if the communications port is working. If
you have any terminal emulators, you can try copying a file to the
V24 port on the clone, and watch with a terminal emulator on the
Atari. If that works, you could try reversing the procedure
to send a text file from the Atari to the clone, the latter approach
would require that you have some shell on the Atari that will let
you copy a file to aux:.
Hope that helps,
-Dave
|
| 391.5 | | SKITZD::MESSENGER | Dreamer Fithp | Thu Feb 09 1989 12:29 | 11 |
| re: .2,.3
[Must use a null modem cable...]
... unless the Amstrad is wired as a DCE, not a DTE. The ST is a
DTE, and you'll only need a null modem (e.g. "swap 2 and 3") if
the Amstrad is too. Try a straight-through cable. The diagnostic
mentioned in .4 is a good one -- get a terminal emulator going on
both machines, type on one, see if the data comes up on the other's
screen.
- HBM
|