From owner-freebsd-hardware Tue Jan 2 15:10:50 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id PAA18442 for hardware-outgoing; Tue, 2 Jan 1996 15:10:50 -0800 (PST) Received: from hda.com (hda.com [199.232.40.182]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id PAA18435 for ; Tue, 2 Jan 1996 15:10:44 -0800 (PST) Received: (from dufault@localhost) by hda.com (8.6.11/8.6.9) id SAA01361; Tue, 2 Jan 1996 18:11:49 -0500 From: Peter Dufault Message-Id: <199601022311.SAA01361@hda.com> Subject: Re: Majordomo results To: rls@kilroy.id.net (Robert Shady) Date: Tue, 2 Jan 1996 18:11:48 -0500 (EST) Cc: rls@kilroy.id.net, gestur@islandia.is, freebsd-hardware@FreeBSD.ORG, admin@islandia.is In-Reply-To: <199601021745.MAA17691@server.id.net> from "Robert Shady" at Jan 2, 96 12:45:20 pm X-Mailer: ELM [version 2.4 PL24] Content-Type: text Sender: owner-hardware@FreeBSD.ORG Precedence: bulk > > It might emulate a 1542, but that would limit you to 16MB without > > bounce buffers or a custom driver since the 1542 programming > > interface is 3 byte addresses. > > This is true, but what's wrong with bounce buffers? I don't remember > seeing that in your original question... ;) Nothing wrong with bounce buffers (especially as a bootstrapping aid since the board will work out of the box), but it seemed like a useful thing to point out that he won't get direct transfers above 16MB. I wouldn't want him to be surprised about those wasted address lines... -- Peter Dufault Real Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267