Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!asuvax!ncar!gatech!taco!hobbes.catt.ncsu.edu!kdarling From: kdarling@hobbes.catt.ncsu.edu (Kevin Darling) Newsgroups: comp.os.os9 Subject: Re: MM1 Keywords: MM/1, backplate, IMS Message-ID: <1991May9.222211.10215@ncsu.edu> Date: 9 May 91 22:22:11 GMT References: <1991May3.070946.4534@ncsu.edu> <7@emtwo.UUCP> Sender: news@ncsu.edu (USENET News System) Distribution: comp Organization: North Carolina State University Lines: 34 >The initial run of machines had two problems, that were not discovered >until the 'fest. #1, the manufactures made a chip substitution, with an >inferior part. Yah, that seems to be an industry-wide problem unless you watch over them ;-). >#2, there is some sort of soft/hardware problem that has the >MM/1 operating erractlly if it only has 1meg of memory onboard. I wonder if I found that one. People with MM/1s right now should make sure their Init module (use moded to change) has 512 instead of 256 set as the default system interrupt stack size. No wait, I think I was told last night that the problem was another wrong chip substitution. AH! It was a wrong type of resistor pack installed on the SCSI, I think. > --- Kevin, whats the backplate look like? ______________________________________________________ | _ __ __ ______ ______ ______ | | | | (__) (__) \____/ \____/ \____/ | | | | __________ ______ __ __ | | | | |__________| \____/ (__) (__) | | | | __________ ______ ______ __ | | |_| |__________| \____/ \____/ (__) | |______________________________________________________| Ext MIDI I/O RS232 RS232 RS232 SCSI/ Parallel RS232 Joystk Stereo I/O floppy Parallel Monitor RS232 Keybd The external scsi/floppy is up to you. MIDI is optional, of course. And the keyboard is usually connected internally to a header instead (inside from the front of the case), so that particular external plug isn't installed on consumer units. - Kevin