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From: rdr@inuxh.UUCP (Robert Rindfuss)
Newsgroups: net.micro.pc,net.micro.att
Subject: Re: physical format on pc6300 hard disk
Message-ID: <405@inuxh.UUCP>
Date: Thu, 13-Mar-86 22:45:51 EST
Article-I.D.: inuxh.405
Posted: Thu Mar 13 22:45:51 1986
Date-Received: Sat, 15-Mar-86 02:31:47 EST
References: <411@mhuxi.UUCP>
Organization: AT&T Consumer Products, Indianapolis
Lines: 32
Xref: watmath net.micro.pc:7398 net.micro.att:990

> Does anyone know how to do a physical format on the AT&T PC6300 hard disk?
> I would like to use the hard disk in another pc (Leading Edge PC) but
> I have been unable to get the Leading Edge to acknowledge the existance
> of the hard disk. I thought that a physical format run on the
> Leading Edge might fix that.
> 
> Thanks in advance.
> 
>        Vern Bradner (ihnp4!mhuxi!v1b)

Brad-


Try the following BASIC program.  It stuffs the right values in the
DTC controller's registers and tells the controller to do the format.
The program inself runs in less than a second, but the drive will be
busy awhile.  The program was from a PC Tech Journal some time back,
and also works on IBMs.

						Bob Rindfuss
						AT&T Consumer Products
						ihnp4!inuxc!inuxh!rdr

70 out &h322, &h1	'get adapters attention
80 out &h320, &h4	'(B0) class = 0; opcode = fmt drv
90 out &h320, &h0	'(B1) drive 0 (c:), head 0
100			'[use &H20 for drive 1 (d:)]
110 out &h320, &h0	'(B2 & B3) start @ cylinder 0
120 out &h320, &h0	'sector 0 and format entire disk
130 out &h320, &h6	'(B4) interleave factor = 6
140 out &h320, &h0	'(B5) reread on ECC, default type
150 end