Thread View: comp.sys.transputer
1 messages
1 total messages
Started by MJP
Tue, 29 Aug 1989 12:52
Strange goings-on
Author: MJP
Date: Tue, 29 Aug 1989 12:52
Date: Tue, 29 Aug 1989 12:52
41 lines
2316 bytes
2316 bytes
Testing a parallel interface today, I managed to type in some incorrect
code which, on first appearance, shouldn't work BUT DID! The details of
the interface are irrelevant, but include a C011. Spot the deliberate
mistake in the following code precis:
PROC interface()
VAL link2.in IS 6 :
CHAN OF [2048]INT16 from.c011 :
PLACE from.c011 AT link2.in :
[2048]INT16 data :
BOOL running :
SEQ
running := TRUE
WHILE running
from.c011 ! data
:
Prodding around in the interface with an oscilloscope, I found that, lo
and behold, the c011 was getting an acknowledgement for the data I was
feeding into it, despite the fact that I didn't have a Transputer
reading data at the other end of the link. Yes, it should be
"from.c011 ? data" in there. Has anyone else come across this rather
bizarre behaviour? Have I made a new discovery? Should I publish? Am
I going to be shot down in flames? All and any thoughts on the subject
would be much appreciated.
Cheers, ***************************************************
Magnus Paterson, * janet - mjp@uk.ac.roe.vaxb *
Royal Observatory, * cbsmail - cbs%uk.ac.roe.vaxb::mjp *
Edinburgh * earn - mjp@vaxb.roe.ac.uk *
Scotland * arpa - mjp%vaxb.roe.ac.uk@nss.cs.ucl.ac.uk *
* arpa - mjp%vaxb.roe.ac.uk@ukacrl.bitnet *
If all else fails, * span - 19463::revad::mjp *
ph. 031-668-8406 * starlink - revad::mjp *
fax 031-668-8264 * psimail - psi%000007002002::mjp *
* janet - mjp@uk.ac.roe.star *
***************************************************
Thread Navigation
This is a paginated view of messages in the thread with full content displayed inline.
Messages are displayed in chronological order, with the original post highlighted in green.
Use pagination controls to navigate through all messages in large threads.
Back to All Threads