Pieter Hoeben wrote:
Declan Moriarty wrote:
Here I am back again. It didn't communicate.
How about checking your processor or UART lines, and .....[SNIP}
Thanks for the help everybody, but reality intervened, and a new part is being ordered. Motor failure caused the damage, as I mentioned. So the machine had been out of comission for two weeks. This communication problem was only discovered when it finally came together. There was no wriggle room even to investigate the board.
And whoever mentioned that the 1488s used no negative line was bang on. The "Negative" line actually went to an o/p from a 74ls240. What were they thinking? An 'enable' of some sort?
--
With Best Regards,
Declan Moriarty -- Author: Declan Moriarty INET: [EMAIL PROTECTED]
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