 | | Anyone using Mac beige G3 —Kevin Hayes
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| | | Hi all, I having trouble connecting a PowerMac G3 (beige model, 233MHz) to the IR tower. I've tried NQC, MacNQC but keep getting "Error: no response from IR tower". I've also tried ZTerm to see if I can get an echo back. The Green LED in the tower (...) (24 years ago, 1-Feb-01, to lugnet.robotics.rcx.nqc)
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| | | | | Re: Anyone using Mac beige G3 —Gerhard Weiss
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| | | | | (...) I've had similar problems with a CyberMaster. It seems that CyberMaster Tower is powered by the serial interface (at least it is switched on by this power). On PC, the DTR line is switched high (12 V), and the CTS line is switched low (-12V). (...) (24 years ago, 1-Feb-01, to lugnet.robotics.rcx.nqc)
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| | | | | | | Re: Anyone using Mac beige G3 —Ray Sanders
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| | | | | | (...) One thing to keep in mind about Mac serial ports is that they are not RS-232, rather they are RS-422. IIRC, RS-232 is a singled-ended voltage standard (ref to ground only), where RS-422 is a differential standard. The 'common' method of using (...) (24 years ago, 1-Feb-01, to lugnet.robotics.rcx.nqc)
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| | | | | Re: Anyone using Mac beige G3 —Dave Baum
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| | | | (...) The serial ports weren't changed in a major way (still RS-422, etc), but there could have been subtle changes to the driver/receiver that would cause problems when hooked to marginal RS-232 devices (such as the IR tower). Fred Martin reported (...) (24 years ago, 2-Feb-01, to lugnet.robotics.rcx.nqc)
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