Hi John. Can you please add me for 3x of each board + required mezzanines? Thanks!
Fabio B. On Aug 12, 2014 11:43 PM, "John Monahan" <[email protected]> wrote: > OK, after some minor glitches I'm now ready to send off a batch order for > our S100 bus Master/Slave 80386 CPU board and its two daughter RAM boards > 8MB and 32/64MB. These will be a "commercial quality" boards with gold > fingers (and in the case of the 80386 board) slightly thicker board traces. > This board set represents a few hundred hours of debugging and > prototypes. In fact the CPU board is the 5th prototype board Andrew & I > did. It runs on the S100 bus at 9MHz (0 -16MB addressing range) and with > the daughter boards (8, 32 or 64MB) at 36MHz in pipeline mode, no wait > states. Much of the time in the past was spend getting a good ROM based > monitor working that can switch the CPU in and out of Protected mode and > thus allowing the 4GB addressing range capability etc. The board boots up > fine (in real mode) with MSDOS V4.01. All this is described here:- > > > > > http://s100computers.com/My%20System%20Pages/80386%20Board/80386%20CPU%20Board.htm > > > http://s100computers.com/My%20System%20Pages/80386%20-%208MG%20RAM%20Board/8MG%20Static%20RAM%20Board.htm > > > http://s100computers.com/My%20System%20Pages/80386%20-%2032MG%20RAM%20Board/32MG%20Static%20RAM%20Board.htm > > > http://s100computers.com/Software%20Folder/80386%20Monitor/80386%20Monitor.htm > > > > These boards are fairly sophisticated, *I do not recommend them for S100 > bus beginners*, however in all lightly-hood, it will be quite some time > until another batch order is done, so if you think you are/will be up to > utilizing them now or in the future, let me know and I will add your name > to the batch order (see below). So far everybody is ordering all 3 > boards. The 80386 CPU board will work on its own with our other RAM boards > and in particular with the recent 16MB Static RAM board. See:- > > > http://s100computers.com/My%20System%20Pages/16M%20RAM%20Board/16MG%20RAM%20Board.htm > > With the few other RAM S100 RAM boards (Godbout etc.) I have it seems to > be fine also. > > > > The 8MB daughter board is a simpler RAM board but expensive to stock with > RAM. The 32 or 64 MB Board requires our V06c "mezzanine boards". These > were used for the above 16MB Static RAM board. The 4MBX8 static RAM chips > have only recently become available. I have not actually tested them yet on > this board. The 2MBX8 chips (3.3 & 5V types), run fine. In the 80386 > monitor I wrote an extensive RAM testing program to check them out. It > checks out bytes, words and dword read/writes to each byte or RAM checking > that all other RAM locations are not overwritten (bad addressing lines). > Takes a few hours to run BTW. > > > > So far I have the following listing of people that wanted boards:- > > > > *Brian Marstella* in 1 of the 80386 boards as well as 1 each of the 8 MB > and 32 MB boards + mezzanines. > > *Matt Turner* 2 of 80386, 2 of 8Mb Ram, 2 of 32Mb Ram & req'd > mezzanines > *Paul Birkel*, 1 of the 80386 boards as well as 1 each of the 8 MB and 32 > MB boards + mezzanines. > > *David Fry*, 1 of the 80386 boards as well as 1 each of the 8 MB and 32 > MB boards + mezzanines. > > > > If you want to be added to the list please let me know ASAP. I have not > figured out total costs yet, but it's going to be the same as for past > boards. Will have them done bt PCBCart. > > > > I'm not quite sure what to do about the mezzanine boards. Todd so far we > are looking at 5X4 = 20 mezzanine boards. Do you have 20-30 in stock? > > Finally I want to stress there is always risk in doing these boards. > Probably less than normal this time, since I only made one very minor > change to the last run I did on the RAM boards. But again this is a > system for experienced people. > > > > John > > -- > You received this message because you are subscribed to the Google Groups > "N8VEM-S100" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
