I'll take two also...
On Sun, May 11, 2014 at 12:18 PM, curt mayer <[email protected]> wrote: > I you're doing a run of the one with the battery backup, put me down for > two. > > > On Friday, May 9, 2014 9:44:08 AM UTC-7, Edward Snider wrote: >> >> These are tweaks for the newer "RAM & ROM" board? That's the one we are >> going with (the one with the battery). >> I didn't realize there was an improved board at first. >> >> Hopefully Andrew has time make these changes. >> >> Ed >> >> >> On Friday, May 9, 2014 11:29:34 AM UTC-5, monahanz wrote: >>> >>> Guys that board has been superseded by the “RAM & ROM” board. See here:- >>> >>> http://s100computers.com/My%20System%20Pages/RAM+ROM% >>> 20Board/RAM+PROM%20Board.htm >>> >>> >>> >>> There is nothing particularly wrong with that board (except it is >>> somewhat a bit of a pain to figure out the correct jumpers) but the newer >>> board has things much more organized *and *has onboard battery backup >>> capability for the static RAM. While it is fine as is, there are a few >>> really minor tweaks that would be nice:- >>> >>> >>> >>> 1. Connect pin 12 of U1D to pin 6 of P31 >>> >>> 2. Have ground pin option for pin 20 (CE) of U123 >>> >>> 3. Change the order of pins on K2 to avoid the need for wire-wrap >>> >>> 4. Remove bA14 label on U100 and U101 and join U100 pin 28 to >>> U101 pin 28 (both go to P14,7). >>> >>> If Andrew has time to splice these in, it might be worth waiting for. If >>> so let’s call this board “V2 “ >>> >>> >>> >>> 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. > -- ~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~ Tom Lafleur (858) 759-9692 -- 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.
