usenet@cps3xx.UUCP (Usenet file owner) (09/14/89)
Someone asked about the modification for the UCI Eazy-87 board for the Z-100. I installed this board and did the modification a couple of years ago. My Z-100 is a low profile, 768K, running at 8 Mhz. The symptom is that the Z-100 locks up erratically when the Eazy-87 is installed. The cure is to install a 100 pF, 50 V Ceramic capacitor across a couple of pins where the ribbon cable connects to the Eazy-87 board. This modification was provided by one of the technicians at UCI. I've had not had any lock up problems since I installed it. See the diagram below: ----------------------------------------------------------- | . . | | .\ . | ----------| . \ . Connect the 100 pF 50V Foil side | | . )| \ . ceramic between the 1st of circuit | | . \. pin on the left row and board | | . . the 5th pin on the right row. | Ribbon | . . | cable | . . The leads can be "tacked" to the | | . . pins with a small amount of solder. | | . . | | . . | ----------| . . | | . . | | (more pins than this) | ---------------------------------------------------------- Mark Urban-Lurain urban@cpswh.cps.msu.edu Computer Science Dept. urbanluraimg@clvax1.cl.msu.edu Michigan State University A-714 Wells Hall (517) 353-0682 office East Lansing, MI 48824 (517) 355-5210 department