On Mon, 11 Sep 2000, Rhialto wrote: > 0 is 0V, 1 is 5V. I finally got around to measuring the voltages yesterday evening. When the drive was not connected to the PET, the line drivers (75160 and 75161) had 3.03 volts on the IEEE-488 side and 5 volts on the 6522 side. The 8032-SK had about 3.3 volts on its outputs. Could someone actually measure the voltages e.g. between pins 11 (ATN) and 12 (GND), so that I know if this is the problem? I guess my next step is to use a oscilloscope (2 channels, no memory) and to write a program that exercises the IEEE-488 lines on the PET side. Marko - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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