sure, send it over.
On Mon, May 16, 2016 at 8:56 PM, Ken Pettit <[email protected]> wrote: > Hey Steve, > > Actually I just checked my Skype contact list and my China manufacturer > contact is online right now. :) I could share that contact with you no > problem. For facts, they would need to see gerbers, BOM and assemby > diagrams of course. > > Ken > > > On 5/16/16 6:54 PM, Stephen Adolph wrote: >> >> no, i have not, mostly because I feel like they can't do the M100 >> machining. I hand grind the PCBs for M100 to expose the large vias so >> they can engage the molex. So, that's an issue. Next is just the $$ >> per hour of the offshore assembling. If you have a contact Ken, I >> could actually get *facts*. >> PC-8201 is pretty easy, but the pins needed are kinda special from >> what I can tell. I only have 50 of those carriers in my parts pile, >> and I never see them on ebay. >> steve >> >> >> On Mon, May 16, 2016 at 8:50 PM, Ken Pettit <[email protected]> wrote: >>> >>> Hey Steve, >>> >>> Did you ever look into having an assembly house build these? >>> >>> Ken >>> >>> >>> On 5/16/16 6:48 PM, Stephen Adolph wrote: >>>> >>>> ..re REX. IF I could release it to oshpark I would. In fact the >>>> boards are there. The problem is... I doubt people will be successful >>>> soldering fine pitch. Do you want to try? The chips can be purchased >>>> on ebay or digikey. >>>> If you want to try I will release the board design(s). >>>> >>>> Steve >>>> >>>> >>>> On Mon, May 16, 2016 at 8:33 PM, Brian White <[email protected]> wrote: >>>>> >>>>> The figtronix link broke because I asked him a question about his main >>>>> rom >>>>> adapter a couple weeks ago, and he updated the board, just the >>>>> silkscreen >>>>> not anything functional, and he removed the old link and made a new >>>>> one. >>>>> I >>>>> don't know if that's just the way oshpark works or if he's just doing >>>>> something wrong. >>>>> >>>>> He ended up doing a bunch of stuff that I wanted for free and without >>>>> asking, so I wasn't going to complain about a little thing like it's >>>>> annoying having to keep finding out the new link! >>>>> >>>>> We ended up trading a lot of emails and he whipped up both the option >>>>> rom >>>>> board and the programmer adapter after I showed him the club100 links >>>>> to >>>>> the >>>>> old EME option rom module. There were several rapid iterations of both >>>>> of >>>>> those and he did the same thing each time with those too, broke the >>>>> existing >>>>> link and made a new one. And it takes forever before they show up in >>>>> the >>>>> oshpark search too. >>>>> >>>>> (Oh yeah, don't trust that search. Find any working link to any board >>>>> by >>>>> that guy, then click on the guy's name, and THERE you see all his other >>>>> boards, including all 3 M100-related, even though they don't show up in >>>>> the >>>>> search.) >>>>> >>>>> Anyway there's lot's of ways to skin the same cat of course. >>>>> >>>>> I like your board too. I actually assembled one of your boards too, but >>>>> I'm >>>>> using the figtronix at the moment, because I don't want a combined >>>>> system >>>>> and option rom, I want to be able to use the external accessible option >>>>> rom >>>>> socket to swap roms and install commercial roms, and I want the system >>>>> rom >>>>> to be socketed and re-programmable or at least swappable. I actually >>>>> found >>>>> ceramic uv-erasable clcc 27C256, but even replacing OTP plcc ones is >>>>> better >>>>> than needing a test-clip. >>>>> >>>>> One thing I should verify, maybe there IS actually room to solder your >>>>> board >>>>> on the motherboard and put a dip socket on the adapter, then trim the >>>>> legs >>>>> of the eprom a little so the eprom sits lower in the socket, does the >>>>> resulting stack come out 0.55" or shorter? That would meet all my same >>>>> wishes above. Takes a standard eprom, and the eprom is removable and >>>>> reprogrammable with no special adapters. >>>>> >>>>> Ideally I'd like both the main and option roms to use the same kind of >>>>> eprom. not plcc in one and soic in the other. There is just barely >>>>> vertical >>>>> room for a low profile plcc socket in the option rom, but low profile >>>>> plcc >>>>> sockets are surface mount so soldering them at home is not simple like >>>>> the >>>>> regular socket with thru pins. I have old commercial option roms that >>>>> used a >>>>> full dip28 eprom on a board. it's a tight fit but it works. The holes >>>>> for >>>>> the eprom are actually pulled in a little closer than the proper dip28 >>>>> spacing, squished inside the half-holes on the edges which are at dip28 >>>>> spacing. No room for a socket, so a board like that you could only >>>>> re-program with either a test clip or a programming adapter, but that's >>>>> no >>>>> worse than what you already need for the soic board. But at least then >>>>> that, >>>>> along with your main rom board, means you'd have the same kind of part >>>>> on >>>>> both system and option roms. >>>>> >>>>> I mean IDEALLY of course, I'd love a REX, but I emailed the address on >>>>> club100 a couple times and never got any answer, and the plans for REX >>>>> aren't published like on oshpark, so oh well. Even if by a miracle one >>>>> REX >>>>> became available from somewhere, I still probably wouldn't want to >>>>> invest >>>>> time hacking with it if no one else could ever make use of the results. >>>>> If >>>>> the REX were reproducible at will and anyone could have one, THEN it >>>>> would >>>>> be a worthwhile target for hacking/developing. If not, then I'd rather >>>>> just >>>>> start a new public/open design even if it's cruder and reinventing the >>>>> wheel. >>>>> >>>>> (And now that I say that, I realize I sure like my MISE, and that's >>>>> basically in the same boat. The design is not public. The guy just >>>>> happens >>>>> to be actively producing and supporting it right now. So maybe I'm >>>>> being >>>>> inconsistent. At least I made my enclosure for the MISE public, >>>>> including >>>>> a >>>>> slick non-trivial arrangement to hold the cf card reader which does not >>>>> have >>>>> any nice mounting holes or anything, if I do say so myself. ;) ) >>>>> >>>>> In the 102 of course I just stuck a plain socket in and a plain dip >>>>> 27c256. >>>>> No complications there. Same goes for late m100 too apparently though >>>>> both >>>>> my m100's needed the adapter. >>>>> >>>>> -- >>>>> bkw >>>>> >>>>> On Mon, May 16, 2016 at 3:54 PM, Mike Stein <[email protected]> >>>>> wrote: >>>>>> >>>>>> Thanks for posting those links. When I mentioned the various options >>>>>> for >>>>>> adding/upgrading System and Option ROMs I wanted to include this one >>>>>> but >>>>>> at >>>>>> the time the link at Oshpark didn't seem to work; I couldn't find any >>>>>> mention on his Figtronix site either so I assumed they were no longer >>>>>> available for some reason. Glad to see they're back and he's added a >>>>>> programming adapter. >>>>>> >>>>>> One advantage of those boards over the board Bill and Steve are >>>>>> discussing >>>>>> is that in a T102 you can add an Option ROM without removing the >>>>>> System >>>>>> ROM >>>>>> chip; however, at the risk of being immodest I should point out what I >>>>>> think >>>>>> are some advantages of the 'Combo' board: >>>>>> >>>>>> Whether you want to upgrade the System ROM and/or add an Option ROM in >>>>>> either an old or a new M100/T102 you use the same board; no need for >>>>>> separate System and Option ROM adapters. >>>>>> >>>>>> To (re)program the IC in an 'old' M100 you'll need another adapter to >>>>>> convert the pinout back to standard JEDEC; no problem, just assemble >>>>>> another >>>>>> adapter 'in reverse' as it were, with a socket. >>>>>> >>>>>> So the one PCB essentially does the same job as all three different >>>>>> Figtronix ones; since you get a minimum of six boards you might save >>>>>> some >>>>>> money. >>>>>> >>>>>> Finally, since it uses a standard 28-pin socket if you want to play >>>>>> around >>>>>> with the System ROM code without burning/replacing/reprogramming the >>>>>> E(E)PROM every time, replace it with a non-volatile RAM chip like the >>>>>> Dallas >>>>>> DS1230Y or the FM1808 FRAM and a minor mod to connect R/W and you can >>>>>> POKE >>>>>> around all you want.. >>>>>> >>>>>> m >>>>>> >>>>>> ----- Original Message ----- >>>>>> From: Brian White >>>>>> To: Model 100 Discussion >>>>>> Sent: Saturday, May 14, 2016 11:42 PM >>>>>> Subject: Re: [M100] ROM burning questions >>>>>> >>>>>> ...Re-post without pic... >>>>>> >>>>>> Old m100 takes a non-standard pinout, new m100 and all t102 takes a >>>>>> standard 27C256 pinout. >>>>>> >>>>>> I just did an old m100 using this plcc adapter: >>>>>> >>>>>> https://oshpark.com/shared_projects/toQDqmVV >>>>>> >>>>>> I burned the Tandy 102 rom with y2k patches from the rex page on >>>>>> bitchin100. >>>>>> >>>>>> The board is easy to assemble except the only hitch is you have to >>>>>> find >>>>>> pin headers that have thinner round pins rather than the more common >>>>>> square. >>>>>> >>>>>> If you have a "new" m100, the chip number on the rom will not match >>>>>> the >>>>>> number silkscreened on this board. In that case you don't need any >>>>>> adapter, >>>>>> just put in a 27C256 dip28 directly, same as for T102. >>>>>> >>>>>> https://goo.gl/photos/GUKXgxxVGaUVt57k9 >>>>>> >>>>>> -- >>>>>> bkw >>>>> >>>>> >
