Xref: utzoo comp.sys.ibm.pc.hardware:3314 comp.sys.ibm.pc.misc:3998
Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!samsung!sol.ctr.columbia.edu!cica!iuvax!bobmon
From: bobmon@iuvax.cs.indiana.edu (RAMontante)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
Subject: Re: Need info: Low level formatting
Summary: address c800
Keywords: PC harddisk
Message-ID: <73885@iuvax.cs.indiana.edu>
Date: 22 Nov 90 15:36:25 GMT
References: <11519@milton.u.washington.edu>
Organization: 'twixt Dali and Dada
Lines: 18

hklee@milton.u.washington.edu (Hyeon Kyu Lee) <11519@milton.u.washington.edu> :
| I didn't keep the manual that came with HD. As far as I remember,
| it starts with "DEBUG... something"
| 
| My hd is Seagate ST-238 RLL and controller is Western Digital
| 8-bit for XT. 

Many or most controllers include a software ROM that starts at c800 which
performs low-level formatting and testing.  Your manual probably
said something about using DEBUG and doing "G=c800" to start execution.

The starting address may not be exactly c800.  For example, my Adaptec
controller begins with some ASCII text so that the first executable
instruction is actually at c800:0ccc.  You could find the exact starting
point by using "dump" and "disassemble" functions of DEBUG to get past
copyright statements and the like.

Hope this helps.