Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!psuvax1!julius.cs.uiuc.edu!apple!marc From: marc@Apple.COM (Mark Dawson) Newsgroups: comp.sys.mac.system Subject: Re: Interrupt on IIsi? Message-ID: <46484@apple.Apple.COM> Date: 11 Nov 90 21:45:32 GMT References: <46451@apple.Apple.COM> <1990Nov11.003749.7369@umiami.ir.miami.edu> Distribution: usa Organization: Apple Computer Inc., Cupertino, CA Lines: 43 In article <1990Nov11.003749.7369@umiami.ir.miami.edu> tcwan@umiami.ir.miami.edu writes: >In article <46451@apple.Apple.COM>, winders@aux.support.apple.com (Scott Winders) writes: >> References: <10864@milton.u.washington.edu> <1990Nov9.205631.29554@Neon.Stanford.EDU> >> >> The Macintosh LC and Macintosh IIsi do not have a programmer's switch. >> Here are the key combinations for the Reset and Non-maskable interrupt (NMI) >> functions: >> >> - Control-Command-Power generates a reset. >> >> - Command-Power generates an NMI. >> >> These key combinations are similar to those used in the Apple IIGS. >> >> Note: MacsBug 6.2b1 or later needs to be installed for the non-maskable >> interrupt to happen when the Command and Power keys are pressed. >> >> Scott Winders >> internet: winders@aux.support.apple.com >> AppleLink: winders.s@applelink.apple.com > >I don't have a IIsi, so I can't verify this, but there's an INIT called >Programmer's Key (I think it's available at sumex) which generates the >Interrupt and Reset sequence when you press Command-Shift-Power and >Command-Power. (I might not remember this correctly since I'm not typing >this in front of a mac). Does it still work on the new machines? > >It might save quite a lot of trouble if it works! > I believe it does work, BUT the action is taken at the next VBL task. The new system breaks immedidately (or close to). Mark -- --------------------------------- Mark Dawson Service Diagnostic Engineering AppleLink: Dawson.M Apple says what it says; I say what I say. We're different ---------------------------------