yah, if I got a bulk delivery of unprogrammed boards.. I could program them fast.
On Mon, May 16, 2016 at 9:10 PM, John R. Hogerhuis <[email protected]> wrote: > Or you could just program a batch of them. I imagine that's not the time > consuming part. > > > On Monday, May 16, 2016, Stephen Adolph <[email protected]> wrote: >> >> the other major challenge with REX is that you need some specific >> hardware to program the CPLD....can't forget that little nugget. >> maybe an offshore shop could do that however. >> >> >> On Mon, May 16, 2016 at 8:54 PM, Stephen Adolph <[email protected]> >> 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 >> >>>> >> >>>> >> >>
