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RE: [N8VEM-S100:7762] A New Single Board Z80 based S100 bus board is now available



Got it, so when I (or others) start a new tread it should begin “[s100Computers]………

 

Will do so next time.  Could others do the same.

John

 

 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Paul Birkel
Sent: Sunday, October 18, 2015 10:13 PM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:7762] A New Single Board Z80 based S100 bus board is now available

 

John:  For those of us to live most in our email clients than directly in Google Groups, it's extremely useful to see mail headers like:

 

     [N8VEM-S100:7761] A New Single Board Z80 based S100 bus board is now available

 

Which is how this message to which I am replying appears to me in my email client.  Leonard is asking (IMO!) whether it's possible to configure the new Google Group so that when it reflects group-activity there is a unique identifying string in square-brackets that prefixes the Subject line "title"?  It doesn't need to be numbered, as the example above shows.  it just needs to be uniquely identifying of the group.

 

Note that I can see that this message to which I am responding originated from "n8vem...@googlegroups.com".

 

The new group issues messages from "s100co...@googlegroups.com".

 

It would seem (by analogy) that the new group ought to be able to insert the Subject line prefix "[s100computers]"?

 

 

On Sun, Oct 18, 2015 at 11:34 PM, John Monahan <mon...@vitasoft.org> wrote:

Not quite sure what you mean Leonard. Do you mean [S100] in the title of the treads or in the name of the Group.  I’m not sure I can change the latter.

 

John

 

 

 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of lcyoung
Sent: Sunday, October 18, 2015 5:48 PM
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:7760] A New Single Board Z80 based S100 bus board is now available

 

John

 

Could you consider doing something to the new Google Group S100 email header

so we can see that it is from "S100"?

Many of us get a boatload of mail each day and no way to see what is spam.

Maybe put [S100 Google] or whatever in the subject line? Then we could

id it for sure!

Thank you

 

Leonard Young KS4RN

 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of John Monahan
Sent: Saturday, October 17, 2015 8:48 PM
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:7758] A New Single Board Z80 based S100 bus board is now available

 

Has not shown up yet Robert, others have.   Could you look into it as I would like to avoid “orders” being spread all over the place.  I have placed the notice on multiple forums.

 

John

 

 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Robert Greenstreet
Sent: Saturday, October 17, 2015 1:55 PM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:7757] A New Single Board Z80 based S100 bus board is now available

 

Hi John,

I just joined the google groups, as instructed -- and I asked to have my name placed on the list for ONE (1) Z80 based S100 Bus SBC board.

Since I have no way to knowing if that "took," and I won't have access to email for a day or so, I thought I'd also add my name that way it seems others have done.

Thank you all for all your work!

Regards,

Robert Greenstreet

 

-----Original Message-----
From: monahanz
Sent: Oct 17, 2015 1:49 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7751] A New Single Board Z80 based S100 bus board is now available

I’m glad to report that the 2nd prototype version of our Z80 based S100 Bus SBC seems to be working fine.  This S100 board has a Z80A on board with 128k of RAM, and 8K (or 4K) of EEPROM.    It is geared for first time S100 bus users to get a basic system up and running. The board has a USB socket to communicate with a laptop/PC as a serial I/O terminal.  The board has an IDE Port to use with a CF-CARD Adaptor to run an operating system such as CPM.   Because the lower 32K of RAM can be switched with another 32K of RAM the board should work well with CPM3.   There are is an onboard IOBYTE port to redirect data I/O to (for example) our S100 bus Console I/O board.  There are numerous jumpers to reconfigure the board. Things like inactivating the onboard RAM, ROM, IDE port etc. to gradually add other S100 boards to your system.    The “BASE_PORT” for a range of the boards’ eight  I/O ports is configurable (0-255).  There is a Power On Jump (POJ) circuit to the onboard EEPROM at any 4K boundary.  The Z80/S100 bus interface circuit seems to work with all (old) S100 bus RAM boards I have (~10), even DRAM boards like the IMS 64K board as well as all I/O boards I have.   This is at 4 or 5MHz (no wait states).

While the board will act as a master/slave S100 board it’s not really intended to function is a complex multiprocessor configuration. For example for debugging you cannot “see” beyond 64K of RAM in the bus.  However you can actually transfer control over to our slave 8086 CPU board. 

I have written a basic Z80 monitor with the usual Zapple/Master commands.  There is an XModem command to download files from your PC (via the USB port) and run in the boards RAM (at any defined location).   There are commands to read, display and write multiple sectors to/from the onboard IDE/CD Card.  Because of time constraints, I have NOT written a CPM/CPM3  BIOS etc. to run the operating system from the board.   Everything you need is there; hopefully somebody can do this and have it available for all.  See the S100Computers Software page to get started.    There is a basic BOM list there also.

A description of the board can be seen here:-

http://s100computers.com/My%20System%20Pages/SBC%20Z80%20Board/SBC%20Z80%20CPU%20Board.htm

I will be doing a batch of (gold plated) production boards soon. If you would like one or more boards please let me know.   To do so please go to the bottom of the above web site page and sign on to the Google Groups forum to handle this. 

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