Path: utzoo!utgpu!cunews!bnrgate!bwdls58!mlord
From: mlord@bwdls58.bnr.ca (Mark Lord)
Newsgroups: comp.binaries.ibm.pc.d
Subject: Re: loading (IBM version) demo disk file onto a floppy
Message-ID: <5769@bwdls58.bnr.ca>
Date: 28 Feb 91 16:05:01 GMT
References: <62835@bbn.BBN.COM>
Sender: mlord@bwdls58.bnr.ca
Reply-To: mlord@bwdls58.bnr.ca (Mark Lord)
Organization: Bell-Northern Research, Ottawa, Canada
Lines: 63

I found this in comp.os.minix.. it describes a way to copy the minix demo
file onto a floppy disk.  Perhaps this will enable our gracious moderator
to finally produce a useable posting of the minix demo.. ?

In article <62835@bbn.BBN.COM> grossman@bbn.com (Martin Grossman) writes:
<
<Here's a quick and dirty way to load andy's demo disk onto a 360K floppy.
<
<1) get the demo file onto your hard disk from ftp.cs.vu.nl [192.31.231.42]
<   pub/minix/demo  (This site is in Europe so ftp after 11 AM EST)
<2) make sure their is a freshly DOS formatted 360K floppy in drive A
<3) type "debug demo-dsk.ibm"
<4) type following
<
<rip<cr>
<80<cr>
<
<rsp<cr>
<fe<cr>
<
<a80<cr>
<
<mov bx,100<cr>
<mov cx,28<cr>
<mov dx,0<cr>
<push dx<cr>
<push cx<cr>
<push bx<cr>
<mov ax,0<cr>
<mov cx,12<cr>
<int 26<cr>
<pop bx<cr>
<pop bx<cr>
<pop cx<cr>
<mov dx,ds<cr>
<add dx,240<cr>
<mov ds,dx<cr>
<pop dx<cr>
<add dx,12<cr>
<loop 89<cr>
<nop<cr>
<nop<cr>
<nop<cr>
<<cr>
<
<g,a6<cr>
<
<4) comments:
<	a) must move stack out of data area
<	b) must have plenty of free memory (360K min)
<	c) this uses the dos argument passing area for program and stack
<	d) the extra "pop bx" is needed to remove the flags push on by
<	   the int 26.
<	e) the loop instruction goes back to the "push dx" line
<	f) this program writes memory out to the floppy a track at a time.
<	g) the program stops on one of the "nop" instructions.


-- 
 ___Mark S. Lord__________________________________________
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