7 Jan
2016
7 Jan
'16
2:13 p.m.
hello everyone ,
first am 1 on the correct channel??
I have several S100 boards , found 25 years ago,
kept in my cellar and forgotten....fortunately they are still in good
conditions , all circuits are standard ttl (only a few proms) ,and all
circuits are on sockets so all is easy to repair.
I cleaned and repaired the power supply (only one capacitor exploded ) ,
I have the correct voltages +-
19v ,+9V on the backplane , now the power supply works . I have very few
documentations
only a few booklets with configuration data on some of the boards , no
schematic.
The maker was a french company named ADD-X ,located near Toulouse south
west of France . Machines ran cpm/mpm .
I have boards of several configurations :
*cpu boards with Z80,64k of dynamic rams and 2708 . There are
configuration switches
around the eprom socket to use 2708 or 2716 . I wonder how it is
possible to address more than 64K (rams+eprom)with a Z80 . I need
documentation about it . On Ebay I found a Z64 board that is identical ,
I cannot contact the seller , I tried to get informations ... he does
not accept emails. Does anyone know that Z64 ?
*boards with 4 rs232+1 ppi
*boards with 2 rs232+1ppi+1 fdc configurable for 8 inches or 5 inches
floppys.
*hdc controllers with one hard disk
I also have disquettes,and backplanes .
I need informations on the S100/cpm systems , how are boards addressed ,
it is something like qbus/unibus : fixed address for each category of
board,is the console at a fixed address???etc . Since that epoch I have
all the classic books from R.Zaks
about microprocessors and cpm , there are very few informations on the
S100 bus.
I built a system with a cpu and a board with RS232 and fdc,I connected
the terminal to the port labeled 'con0'(console 0??) ,nothing happened
on the terminal.
It may be lots of thing from a dead cpu or eprom to rs232 driver . I did
not test more for today.
I want to build a small system with a monitor in rom to examine/modify
ram , registers just to learn Z80 . What monitor can be used ? I have
what is necessary to compile and burn eproms .
Thanks for your help . I have lots of questions.I can send photos
to identify boards .
Best regards Alain Nierveze
7 Jan
7 Jan
2:41 p.m.
Sujet :
Date :
De :
Pour :
hello everyone ,
first am 1 on the correct channel??
I have several S100 boards , found 25 years ago,
kept in my cellar and forgotten....fortunately they are still in good
conditions , all circuits are standard ttl (only a few proms) ,and all
circuits are on sockets so all is easy to repair.
I cleaned and repaired the power supply (only one capacitor exploded ) ,
I have the correct voltages +-
19v ,+9V on the backplane , now the power supply works . I have very few
documentations
only a few booklets with configuration data on some of the boards , no
schematic.
The maker was a french company named ADD-X ,located near Toulouse south
west of France . Machines ran cpm/mpm .
I have boards of several configurations :
*cpu boards with Z80,64k of dynamic rams and 2708 . There are
configuration switches
around the eprom socket to use 2708 or 2716 . I wonder how it is
possible to address more than 64K (rams+eprom)with a Z80 . I need
documentation about it . On Ebay I found a Z64 board that is identical ,
I cannot contact the seller , I tried to get informations ... he does
not accept emails. Does anyone know that Z64 ?
*boards with 4 rs232+1 ppi
*boards with 2 rs232+1ppi+1 fdc configurable for 8 inches or 5 inches
floppys.
*hdc controllers with one hard disk
I also have disquettes,and backplanes .
I need informations on the S100/cpm systems , how are boards addressed ,
it is something like qbus/unibus : fixed address for each category of
board,is the console at a fixed address???etc . Since that epoch I have
all the classic books from R.Zaks
about microprocessors and cpm , there are very few informations on the
S100 bus.
I built a system with a cpu and a board with RS232 and fdc,I connected
the terminal to the port labeled 'con0'(console 0??) ,nothing happened
on the terminal.
It may be lots of thing from a dead cpu or eprom to rs232 driver . I did
not test more for today.
I want to build a small system with a monitor in rom to examine/modify
ram , registers just to learn Z80 . What monitor can be used ? I have
what is necessary to compile and burn eproms .
Thanks for your help . I have lots of questions.I can send photos
to identify boards .
Best regards Alain Nierveze
5:08 p.m.
On 2016-Jan-07, at 11:13 AM, nierveze wrote:
first am 1 on the correct channel??
I have several S100 boards , found 25 years ago,
...
I wonder how it is possible to address more than 64K
(rams+eprom)with a Z80 .
S100 memory boards often incorporated a bank-switching scheme to allow for multiple 64K
banks in the system.
The convention was a dedicated I/O port number (0x40?) to which one writes a bit pattern
to select the desired bank.
Such memory boards have configuration switches to set their bank ID/number.
For a system to use this scheme, all the memory boards in the system are to be listening
on that same port, waiting to recognise their ID.
There's also the PHANTOM line on the bus, used to allow a bootstrap ROM to take
precedence over some address space at reset/power-on, thus overlaying some RAM during
boot. The ROM is switched out at some point to allow access to full RAM.
I need documentation about it .
Best sourcess for S100 board docs are:
http://www.s100computers.com/Hardware%20Index%20Page.htm
and
http://maben.homeip.net/static/S100/
Seems to be a lot of duplication between the two, I'm not sure which site the
(duplicate) material originated on (who's copying whom).
There's also this site, although I'm not as familiar with it:
http://www.hartetechnologies.com/manuals/
8 Jan
8 Jan
1:33 p.m.
On Thu, Jan 7, 2016 at 2:08 PM, Brent Hilpert <hilpert at cs.ubc.ca> wrote:
On 2016-Jan-07, at 11:13 AM, nierveze wrote:
undergraduate. (The
fact that it was for an S-100 system is sufficient
suggestion of just how long ago....) Someone was doing medical image
processing, IIRC.
--
Ian S. King, MSIS, MSCS, Ph.D. Candidate
The Information School <http://ischool.uw.edu>
Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical
Narrative Through a Design Lens
Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org>
Value Sensitive Design Research Lab <http://vsdesign.org>
University of Washington
There is an old Vulcan saying: "Only Nixon could go to China."
first am 1 on the correct channel??
I have several S100 boards , found 25 years ago,
...
I wonder how it is possible to address more than
64K (rams+eprom)with a
Z80 .
S100 memory boards often incorporated a bank-switching scheme to allow for
multiple 64K banks in the system.
The convention was a dedicated I/O port number (0x40?) to which one writes
a bit pattern to select the desired bank.
Such memory boards have configuration switches to set their bank ID/number.
For a system to use this scheme, all the memory boards in the system are
to be listening on that same port, waiting to recognise their ID.
I designed and built such a board way, way back when I was an
3118
days inactive
3119
days old
3 comments
3 participants
participants (3)
-
hilpert＠cs.ubc.ca -
isking＠uw.edu -
nierveze＠radio-astronomie.com