Yes, I have ask for this before.... help a lot in debugging ......
i~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~i Tom Lafleur (858) 759-9692 > On May 11, 2014, at 9:09 PM, Crusty OMO <[email protected]> wrote: > > May I add a 5th item to the list of changes? > > 5. Move the various silk screen labels of chips out from under the chip. > When the board is built, you should still be able to identify where U1 is, > etc. While your at it, add descriptions of the jumpers on the silk screen > (if possible). > > > From: [email protected] > To: [email protected] > Subject: RE: [N8VEM-S100:3635] New run of S-100 EPROM/RAM boards... > Date: Sun, 11 May 2014 18:25:38 -0400 > > > > KiCAD EDA files here > > > > http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=S-100%20EPROM > > > > Thanks and have a nice day! > > Andrew Lynch > > > > From: [email protected] [mailto:[email protected]] On > Behalf Of John Monahan > Sent: Sunday, May 11, 2014 6:14 PM > To: [email protected] > Subject: RE: [N8VEM-S100:3634] New run of S-100 EPROM/RAM boards... > > > > If Andrew puts up the board files for this RAM+ROM board on the Wiki site. > Before another run is done, could somebody volunteer making the small changes > (below) and do the board re-routing etc. It will make for a much nicer > board. > > 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). > I would do it but I’m busy finishing an 80386 board and a few other things > > > > John > > > > > > > > From: [email protected] [mailto:[email protected]] On > Behalf Of Tom Lafleur > Sent: Sunday, May 11, 2014 12:52 PM > To: [email protected] > Subject: Re: [N8VEM-S100:3631] New run of S-100 EPROM/RAM boards... > > > > 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 Guys that board has been superseded by the “RAM & ROM” board.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. > > -- > 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. > -- > 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.
