I read this on the Heath listserver, and figured someone here would be
able to help him out :). Reply to him directly as I don't *think* he is
on this listserver.
***************
Subject: Looking for HDOS diskette layout
Date: Tue, 3 Feb 2004 10:45:01 -0700
From: "Eric J. Rothfus" <eric(a)ROTHFUS.COM>
Does anyone know or have a reference regarding the
layout of the HDOS (H8/H19) diskette and filesystem?
The generic HDOS documentation doesn't include it.
I'm looking mainly for the way that HDOS organizes
files on the diskette and the format of the
directory track.
I will be creating software that can add/remove
files from an image of an HDOS floppy.
This is in continuing development of the SVD
(www.rothfus.com/SVD). The SVD can now boot the H8
and will soon be tested on the H19 (thanks Jack!).
Thanks!
Eric
Hi Chris
The answer is absolutely maybe. It really depends
on the original cause. Try running some test with
a known good drive.
You didn't state what you were running on? Things
like Nortons disk doctor have good serface test.
Dwight
>From: chris <cb(a)mythtech.net>
>
>Will a magnetic bulk eraser restore a floppy to good status?
>
>I have some floppies that are reporting bad sectors when formatted. I've
>tried bulk erasing them, and a format afterwards reports no bad sectors.
>Is this actually working, or am I just getting lucky, and those bad
>sectors will return shortly.
>
>These are DSDD 3.5's which are getting a little harder to come by. So if
>bulk erasing works, then I'll do that and salvage them.
>
>-chris
><http://www.mythtech.net>
>
>
Hi All,
Going through some stuff picked up at the auction a while ago (but never
completely looked through) I found some interesting
Qbus stuff. I need some help with the ID though, Googling has turned up
nothing useful.
1. Qbus half-height, appears to be a memory board:
CDM 7703 R Circa 1980 Cyberchron Corporation
2.Qbus half-height, appears to be a disk controller card:
Data System Design Circa 1980 s/n 0777 #804120-01 rev A
I also found along with two Phillips RD50 cdroms, a M7552 Qbus KRP50
controller and cab kit, but no external cables. Both the RD50's and the cabkit
have db15 connectors, so I'm presuming a straight through db15 might do the
trick, or are there any special cables required? (were talking DEC here, so I
would't be surprised if it needed a special cable)
Ant help would be appreciated.
Cheers
Tom
Fred Cisin <cisin(a)xenosoft.com> wrote:
> real IBM 8 bit VGA cards are a bit scarce these days
I'm looking for one and am willing to pay fair antique value.
MS
I scavenged some old disks from someone that was cleaning up their office
after moving. Listed below is some items someone might want. Otherwise, I'll just
format and keep them for extras. They all look like new and seem to be
unused.
system disks for Dell system200 pc. DOS/gwbasic/utilities
borland turboC 1986 5disk set
Microtek USD-III 1.0 5 disk set
x6800 assembler
something called matrix desktop. 8 disk set
Turbo C++ 10 disk set
procomm plus 2 disk set
MS mouse and paintbrush, several copies of each
MSDOS 4.01 from TRC techology research. Has the old style ms logo on them. 6
disk set
MS windows 3.0 from z-nix company 5 disk set
pay for shipping and they can be yours
Quite some time ago I loaned out my 5-CD HP-UX media set (plus some 4mm DAT
tapes of layered products) to someone on the list to duplicate. I was making
room in the collection for my D220 system yesterday and went to reinstall
the OS, and can't find my media set anywhere.
I know where I can borrow a copy, but I want my originals back. Can the
listmember who borrowed them from me let me know if they still have them, or
if they sent them back to me and I just can't find them. I'd query the list
member directly but can't seem to find the emails that were exchanged in
private about it.
Thanks!
Jay West
---
[This E-mail scanned for viruses by Declude Virus]
I thought for sure I'd left my computer collecting days far behind when my interest in amateur radio re-flared a few years back. Then I came across one heck of a piece of history that I could not resist.
Specifically: An original Compaq 'Luggable.' Green-screen, 8-bit motherboard, two full-height 360K FDD's, the works. Found at a local thrift store, in pretty good shape (if a bit dirty) and still functional, for the stunning price of $18 with tax.
<sigh> I couldn't say no. The sight of the thing sitting on the floor, gathering dust and negligent kicks from other customers, was too much. God only knows what I'm going to do with it... Although I do have a nice IBM 8-bit MFM drive controller I'm going to stick in there, along with a hard drive.
BTW, the thing had a fully-loaded AST SixPack Plus board in it. If this requires any drivers to work, I would appreciate knowing about it (and knowing where to find said drivers).
Thanks much.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"
Nothing happens at all when I press CTRL-T
Up to the point where it hangs all seems to be going well. I boot with
the flags 0,20000 so I can see what is going on and there are plenty of
messages showing certain files being loaded and configured etc. All of
the %EXECINIT processes appear to load OK and then it changes to the
%SWAPPER messages and this all hangs with the second %SWAPPER message
where it checks the status of the system disk !!!
Robin
_____
<< ella for Spam Control >> has removed 1845 Spam messages and set aside
241 Newsletters for me
You can use it too - and it's FREE! www.ellaforspam.com
Folks,
I need some help.
I'm trying to bring up my LSI-11 system (KDA11, BA11-VA Cabinet, RX02,
VT100), and due to a basement flood a few years ago, all of my RX02 media
has been water damaged. This was my last 8" floppy system.
The diskettes are sticking to the jacket, and some bits of the lining are
sticking to the oxide, (or vice versa) anyways I cannot get anything to
boot. I've tried cleaning a few of the media with isopropyl alcohol, but
no success yet.
I had a complete RT-11 V4 distribution (and all the binders) but even the
DEC distribution diskettes got hit. Some of them have mold on the labels.
I'm looking for someone to help me with a copy of a known good bootable
RX02 RT-11 system diskette, and maybe even some diagnostics. There may be
something wrong with the drives, but given the unreliability of my media, I
cannot tell.
I still need to sit down and single step through the bootstrap and figure
out what is bombing, but I could use to remove some variables.
Can anyone help me? Easiest if you are in the area, I could pick up.
Thanks,
Dave. (In the northwest side of the Boston Area)
