Manual = WOW :-> But you need a list of acronyms, starting with JAIR ...
On Tue, Jul 8, 2014 at 9:22 PM, Crusty OMO <[email protected]> wrote: > Hi Don & to All... > > I put together a list and included it in the Manual. The Manual also > covers the jumper settings, a block diagram, some verbage and the ECO > change. > > Please find the manual on the Wiki page > > http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=S-100%20ALTAIR-IMSAI%208080%20CPU%20Board > > I don't know about starting a "Build Page". > > Regards, > Josh Bensadon > > > > ------------------------------ > Date: Tue, 8 Jul 2014 10:17:25 -0700 > Subject: Re: [N8VEM-S100:4500] Re: ALTAIR/IMSAI 8080 CPU replacement board > -MOD > From: [email protected] > To: [email protected] > CC: [email protected] > > > Josh, > > Have you put together a bill-of-materials yet? > Is there a build page on the N8VEM wiki yet? > If not I can start one and add a BOM like I did for the backplane, > complete with part > numbers for Mouser, digi-key. > > > > > On Tue, Jul 8, 2014 at 9:48 AM, Crusty OMO <[email protected]> wrote: > > Hi Group, > > Some of you have recieved this board already. I wish to inform you that 1 > mod is required. > > I did not design the 3.3V to 5V circuit well enough and as it turns out, > it's not really even needed. > The 3.3V data output of the SD Memory Card can be tied directly into the > LS TTL input of the 74LS299 shift register. > One trace needs to be cut for this mod. > > I am working on a manual for this board, I plan to publish it later > today. But, for now, before you build, you might want to cut this trace. > > The trace is on the component side, from pin 11 of the 74LS299 chip. Just > below the silk screen text "SD LOOP BACK", there is the best place to cut > it since there is ample space on either side. See photo attached. > A jumper wire then should then be placed between the resistor lead above > the silk screen text "R7" to pin 11. > > Regards, > Josh > > > > > > > -- > 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. > > > > > -- > ------------------------------- > Don Caprio [email protected] > http://www.uxpro.com > (925) 240-UNIX > > -- > 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.
