> > If I recall correctly; weren't the "preferred" versions of the 33ASR > for use where the reader was controlled by the computer the 3-position > manual reader control models? Since the reader won't run unless the > computer is asserting the reader control lines anyway, and with such > hardware flow control XON/XOFF automatic control become redundant.
Over here most ASR33s were used as locally-connected (current loop) computer terminals. Every one I've seen has been manual control (3 position reader control) and had a reader control relay fitted. So it certainly can be done. I agree that if you have the reader relay there is no need for the XON/XOFF control too. I don't think it matters if you have it, but no worries if you don't. In any case the reader control is electrical, in fact the reader is the only part of the ASR33 not to have a mechanical connection to any other unit. Reader control means energising (or not) the trip magnet at the rear right of the typing unit. So if you have the XON/XOFF control and find it gets in the way, it should be trivial to bypass it. -tony Regards, Christian -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.
