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RE: [N8VEM-S100:347] Re: CF card images
Leon, on the CF card copying what was the problem? If you format a CF card
in drive #2 you must reset the "disk" with a ^C before doing a disk A->B
copy. Then ^C again before reading the (new) Disk for the first time. For
some reason CPM and/or the disk gets out of sync with these processes.
These cards are real sensitive about getting a reset pulse before first
being accessed. This is always sent with a CPM ^C -- to both disks, as each
is accessed for the first time. The symptoms of a "reset problem" are the
very first sector is crapped up -- and always only that one! After you do a
disk A->B copy, do a verify (at least for the first track or two).
If the problem persists please let me know. BTW, you can always correct the
above by doing a HSYSGEN on the CF card. In CPM, go to drive #2 (your
freshly copied disk) and type HSYSGEN. Follow the instructions. Remember
HSYSGEN always "does" the currently selected drive.
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On
Behalf Of Elsid
Sent: Thursday, July 14, 2011 6:49 AM
Subject: [N8VEM-S100:347] Re: CF card images
Congratulations on getting the Sol-20. Was it from EBay the other day?
I have been looking at some freeware backup programs that do sector by
sector backup to an image file.
Easeus Todo Free Version looked like it might do the trick. But I tried
doing a sector backup of an N8VEM-S100 compact flash and restore from the
backup file and found the CF didn't boot.
There may be a way to do this by using the linux utility "dd".
There is a windows version here:http://www.chrysocome.net/dd you should be
able to make a raw image of a CF on a USB cardreader
"dd if=\\?\Device\Harddisk1\Partition0 of=c:\temp\usb2.img bs=1M -- size
I have to check if this actually works. - I tried it. It seems to work but
then the imaged CF doesn't boot.
I think the problem is the usb card reader so I'll try the CF on an IDE/CF
I also tried with wxHexEditor but haven't got very far yet.
If I image a CF with CPM3 on it that you can restore to your CF you sill
won't have the correct CBIOS for the SOL-20.You will have to modify John's
CBIOS or, if you can get hold of a SOL-20 CBIOS source, add in Johns IDE
stuff to it.
You can do all that in the Altair Z80 simulator but you can only write to a
floppy disk image (.imd).
If you email me the floppy image I can load it onto a floppy with IMD, copy
it to a CF in my S-100 system, then image it up to a file (with some program
yet to be tested) and email you back the CF image file.
If anyone can think of a better way to do this please let me know.
It would be wonderfull if we had a simulated IDE drive in the Altair
simulator or were able to write directly to the compact flash from the
simulator. Maybe someone knows how to do this?
On Jul 14, 2:11 am, Nama <forum...@mac.com> wrote:
> Oops. That was supposed to say 's100computers.com', It seems I lost
> the 's100' part in the original post. Sorry about that.
> On Jul 13, 8:00 pm, Nama <forum...@mac.com> wrote:
> > Hi all,
> > I'm new to this forum and to the world of S100 and CP/M. However I
> > have just acquired a SOL-20 with the idea that I want to learn more.
> > As my SOL-20 did not come with and disk drives so I have just
> > ordered one of the John and Andrew's dual IDE boards with the
> > thought of building it up and running CP/M from a CF card. I have
> > confidence that I can build the hardware, but getting CP/M onto a CF
> > card looks to be very challenging, more so considering I presently
> > have zero knowledge of CP/M or S100 machines!!!!
> > There is a thread on computers.com's forum under the software
> > section where someone is asking if it would be possible to back up a
> > CF card containing a generic CPM3 install using some backup software
> > such as Dave Dunfields ImageDisk. That backup file could then be
> > placed on the internet so that others (and myself) could download it
> > reinstall it on on of their CF cards. This could be an easy way to
> > bootstap a system if people don't have access to a running CP/M system
> > I was wondering if someone here would be willing to do this for the
> > community. John says he can then post the file, but if not, I can
> > put it on my server for all to download.
> > Much thanks in advance
> > Phil- Hide quoted text -
> - Show quoted text -