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 Guys that board has been superseded by the “RAM & ROM” board.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.
