From owner-freebsd-emulation Mon Jan 19 02:24:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA14395 for freebsd-emulation-outgoing; Mon, 19 Jan 1998 02:24:15 -0800 (PST) (envelope-from owner-freebsd-emulation@FreeBSD.ORG) Received: from hydrogen.nike.efn.org (d182-89.uoregon.edu [128.223.182.89]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA14391 for ; Mon, 19 Jan 1998 02:24:10 -0800 (PST) (envelope-from gurney_j@efn.org) Received: (from jmg@localhost) by hydrogen.nike.efn.org (8.8.7/8.8.7) id CAA24053; Mon, 19 Jan 1998 02:23:49 -0800 (PST) Message-ID: <19980119022348.44312@hydrogen.nike.efn.org> Date: Mon, 19 Jan 1998 02:23:48 -0800 From: John-Mark Gurney To: shmit@erols.com Cc: Mike Smith , Randall Hopper , emulation@FreeBSD.ORG Subject: Re: DOSCMD: Problems w/ Quicken References: <19980118192319.02894@ct.picker.com> <199801190321.NAA00804@word.smith.net.au> <19980119051304.06795@erols.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.69 In-Reply-To: <19980119051304.06795@erols.com>; from Brian Cully on Mon, Jan 19, 1998 at 05:13:04AM -0500 Reply-To: John-Mark Gurney Organization: Cu Networking X-Operating-System: FreeBSD 2.2.1-RELEASE i386 X-PGP-Fingerprint: B7 EC EF F8 AE ED A7 31 96 7A 22 B3 D8 56 36 F4 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ Sender: owner-freebsd-emulation@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Brian Cully scribbled this message on Jan 19: > On %M %N, Mike Smith wrote: > > Yecch. If it's actually trying to do what the above claims, it's > > making quite a mess. (0040:0000 is in seriously low memory, but > > 0040:ffff doesn't make any sense at all). > > Hrm... now it's been a while since I've done DOS assembler, so this > maybe incorrect, but IIRC, 0x40 is the keyboard segment. the 0x40 is the bios segment.. it really looks like a miscalculation of some sort... > 0x40:0x0 is the head of the keyboard buffer nope, this is com1's base address... > 0x40:0x2 is the tail this is com2's base address... 0x40:1a is the head pointer, and 0x40:1c is the tail pointer for the keyboard... > and the next 16 bytes is the ring-buffer. actually 0x40:0x1e through 0x40:0x3d is the keyboard buffer (32bytes total) > So I have no idea what 0xffff would be, except perhaps a miscalculation. > Although, you may be able to expand the size of the keyboard buffer, and > the tail could have ended up there... P.S. Information from The Programmer's PC Source Book (second edition).. pretty much a printed Ralph Brown's Interrupt list, but from 1991... (it also lacks a lot of the detail Brown's list has, but still useful) -- John-Mark Gurney Modem/FAX: +1 541 683 6954 Cu Networking P.O. Box 5693, 97405 Live in Peace, destroy Micro$oft, support free software, run FreeBSD