From owner-freebsd-chat Mon Sep 8 20:57:52 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id UAA29909 for chat-outgoing; Mon, 8 Sep 1997 20:57:52 -0700 (PDT) Received: from freebie.lemis.com (gregl1.lnk.telstra.net [139.130.136.133]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id UAA29904 for ; Mon, 8 Sep 1997 20:57:48 -0700 (PDT) Received: (from grog@localhost) by freebie.lemis.com (8.8.7/8.8.5) id NAA06344; Tue, 9 Sep 1997 13:27:36 +0930 (CST) Message-ID: <19970909132735.60877@lemis.com> Date: Tue, 9 Sep 1997 13:27:35 +0930 From: Greg Lehey To: Wes Peters Cc: chat@freebsd.org Subject: Re: lousy disk perf. under cpu load (was IDE vs SCSI) References: <19970909082656.57842@lemis.com> <19970909095701.10527@lemis.com> <199709090353.VAA22280@obie.softweyr.ml.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.81e In-Reply-To: <199709090353.VAA22280@obie.softweyr.ml.org>; from Wes Peters on Mon, Sep 08, 1997 at 09:53:37PM -0600 Organisation: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8250 Fax: +61-8-8388-8250 Mobile: +61-41-739-7062 WWW-Home-Page: http://www.lemis.com/~grog Fight-Spam-Now: http://www.cauce.org Sender: owner-freebsd-chat@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Mon, Sep 08, 1997 at 09:53:37PM -0600, Wes Peters wrote: > Greg Lehey writes: >>> I do not remember. We used it in several Z-80 MP machines we built. >>> That was way before 8" drives, before any PC. The machine was an S-100 >>> multi-processor. Maybe the fact that we used the first US shipment of >>> 64kbit DRAM on that machine will give you a clue. >>> Micropolis was experimenting with 8" drives about a year later. >> >> Sounds like about 1980. > > Yeah. I remember getting 8K SRAMS for my H-8, and sellcing rows of 16K > DRAMs for Apple ][s. 64K DRAMs? This guy was *spoiled*! ;^) Oh, we're me-tooing, are we? I just found my first computer out in the shed while I was looking for something useful. 20 years and a couple of months old, Z-80 with 2 2112 static RAM chips. Remember them? 4x256 bits. The whole machine had 256 bytes, so I wire-wrapped a 4K board, but could only afford 8 2102s. Then I moved to S-100, because Bill Godbout was offering 8 K memory boards at prices I could only dream about in Germany. Greg