Path: news1.icaen!news.uiowa.edu!NewsNG.Chicago.Qual.Net!nyd.news.ans.net!newsfeeds.ans.net!newspump.monmouth.com!newspeer.monmouth.com!nntp.giganews.com!cyclone.swbell.net!typhoon01.swbell.net.POSTED!not-for-mail Message-ID: <362464ED.B398F535@swbell.net> From: Rubywand Reply-To: rubywand@swbell.net X-Mailer: Mozilla 4.06 [en] (Win95; I) MIME-Version: 1.0 Newsgroups: comp.sys.apple2 Subject: Re: Need Apple II SCSI card jumper info References: <70113g$iad@sjx-ixn10.ix.netcom.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 90 Date: Wed, 14 Oct 1998 03:46:37 -0500 NNTP-Posting-Host: 207.193.8.30 X-Complaints-To: abuse@swbell.net X-Trace: typhoon01.swbell.net 908354844 207.193.8.30 (Wed, 14 Oct 1998 03:47:24 CDT) NNTP-Posting-Date: Wed, 14 Oct 1998 03:47:24 CDT Organization: SBC Internet Services Xref: news1.icaen comp.sys.apple2:140383 John Schreiber writes ... > > I purchased a Apple II SCSI controller and noticed that it has 8 pairs of jumpers at J1. Can > anyone tell me if any of these should be capped? None are currently jumpered. The function of > these jumper pins would be appreciated. I do not have the controllers manual. > > Thanks, > > John Steve Buggie suggests that you may have the CMS SCSI controller card. If you do, the following snip from the FAQs should help ... >> From: Jack Countryman IAC 013- I want to configure a CMS hard drive controller card to run a 20 meg drive for a //e. Could someone supply info on settings? According to the CMS manual, page D3, the six sets of eight pairs of jumpers (u1....u6) are for the following purpose: _______________________________________________________________ / | / u 1 u 2 u 3 u 4 j2 | / | / | | | | | | | | | | | | u 5 u 6 | |___________________________________________ j1 | | | |______________________| u 1: Boot Scan delay....manual shows no jumpers here in default configuration u 2: first (left) jumper is 'Enable I.C.P. (Yes/No)', middle 6 not used, last (right) is 'multiple initiators (Yes/No)'...manual shows no jumpers in default configuration u 3: Selection phase time out delay....I believe this sets how long the card waits for the drive to come up to speed(?)...manual shows the default as having 4, 5, and 7 with jumpers installed u 4: Arbitration phase time out delay....manual shows default as no jumpers installed u 5: Bus Free phase time out delay...manual shows default as jumper on number 1 u 6: Interrupt recovery delay....manual shows jumpers on 3, 4, and 5 J1 and J2 are single sets of pins. The manual says J2 is not used, but J1 is to be jumpered. The card I have here, came out of a IIGS where it was hooked to first a twenty meg CMS drive, and later a forty meg CMS drive. It has the following jumpers set: u1: jumper on 7 u2: no jumpers u3: jumpers on 4, 5, and 7 u4: no jumpers u5: jumper on 1 u6: jumpers on 3, 4, and 5 j2: no jumper j1: jumper As I recall, this setup yeilded a rather long pause for the hard disk to come up to speed (about 40 to 45 seconds) that we found necessary at the time to avoid boot problems. << Rubywand