> > > Converting between genuine 20mA loop and RS232 is not that hard. > > Yes, but I'm i) lazy, and ii) overwhelmed with other projects! :-)
True, but sometimes (and I have been guilty of this) it takes longer to post and moan about the problem than to dig into the junk box, grab the soldering iron, and fix it. [SACK timeout board] > Well, looking at the print (it's in the 11/34 Vol. 2 set that's online), it > looks like it should work plugged in anywhere; the circuit just seems to look > for any BGn/NPG that's been on 'too long', and when it sees one, asserts > SACK. I can't be bothered to download the prints for just that one board (see above ;-)) But if it behaves as you describe, it would appear that if placed at the remote end of the bus it could lock the bus by forcing SACK/ asserted (as the M9302 does) if a grant chain is open, whereas if it is placed at the CPU end it can't. -tony
