17 Sep
2009
17 Sep
'09
10:20 p.m.
The 8mb Primary HDD (if I am remembering correctly) has a SASI interface to
SA1000 bridge board and the HD was a SA1000 interface drive, the 4mb and 8mb
used 8" HDD's, the 5, 10 and 15 used MFM drives, with a SASI? to MFM
bridgeboard.
I used to have a model-16 with Xenix with a 4MB and 8MB HDD
On 9/15/09 8:35 AM, "dwight elvey" <dkelvey at hotmail.com> wrote:
Hi
I had a similar problem for my Olivetti M20 ( Z8000 based ).
I think it was Tony that pointed out that the TRS80 5Meg hard
disk drive contained an almost identical controller to the SA1000.
For the interface card, I wired up my own on a wire wrap board.
I removed the original drive and put in a ST251 that has a similar
sector/head to what I needed for the M20.
I did have to make minor modifications to the software to use
the auto stepping timing rather than the 10ms steps that the
original Olivetti drive expected. Other than that it worked fine.
How is the memory mapped in the S8000? The Olivetti has one 64K map
that Data and the instruction map to two different physical
memory locations. This seems to be required for the implementation
of CPM-8000 that I have running on the M20.
Dwight
----------------------------------------
Date: Tue, 15 Sep 2009 16:13:40 +0200
From: lehmann at ans-netz.de
To: classiccmp at classiccmp.org
Subject: Zilog System 8000
Hi,
its me and my S8000 again ;)
One year ago I managed to get my hands on a S8000 which was in a kinda
bad shape. I made the repairs I was able to do (fixed all 3 PSUs, build a
complete new frontpanel, fixed cut wires). But I'm still looking for
parts which are missing in that sytem:
- harddisk
- a harddisk with a SA1000 interface as well as a so called "FINCH
adapter board" used by Zilog to attach this harddisk to the WDC
controler. It was probably called "FINCH" because the shipped SA1000
harddisk was probably a CDC 9410 Finch, 8", 32MB harddisk. Some
websites lists the 9410 drive as a SMD drive so I'm not sure about
this.
- a harddisk with a SMD interface - but then I would also need the SMD
interface adaptor for the S8000
- there was also a "mini-WDC" adapter which implemented a ST506 interface
for this I would have harddisks... This was used only in later S8000
Plus models.
- tape drive
- the original one was probably a DEI drive. It should have been a
QIC-02/36 type with four tracks and a fixed head (not like the 60MB
drives).
- tape cartridges
- still looking for the diagnostic and the OS cartridges....
- any other hardware ;)
- Paxton Hoag responded 2008 on the list that he saved a whole set of
S8000 boards when the original machine went to scrap - but
unfortunally he never responded back lately :(
If someone is interested in pics of my S8000 - they can be found here:
http://pics.pofo.de/gallery/v/S8000
--
Oliver Lehmann
http://www.pofo.de/
http://wishlist.ans-netz.de/
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