Any wires on the eme device? On Saturday, July 28, 2018, Andy Lawrence <[email protected]> wrote:
> Bare with me, still getting up to speed, I thought EME was a product of > some-sort that was known. > > Anyhow, chip pulled, which turns out to be a M5M5256BP, static RAM. > > > > On Fri, Jul 27, 2018 at 10:00 PM Brian White <[email protected]> wrote: > >> We can't know what it is until you dump it and upload it. Maybe then we >> still don't know, or maybe someday we eventually do even if not today, but >> absolutely not if it never gets dumped. If it's just the eme adapter with >> no label, then it could be literally anything or nothing. >> >> I don't sell REX's, I just tried to document the process of building, to >> remove all the mysteries and question marks and risk as much as possible so >> anyone could build their own, and put it where anyone else could improve >> the directions even further. >> >> On Fri, Jul 27, 2018 at 6:41 PM Andy Lawrence <[email protected]> >> wrote: >> >>> Hi Brian, maybe, do you have a spare REX? >>> >>> Either way I can dump the ROM, no problem. It's of no use right, some >>> proprietary something or other? >>> >>> On Fri, Jul 27, 2018 at 5:28 PM Brian White <[email protected]> wrote: >>> >>>> You should sell it to me :) also dump the rom, or let me dump it. >>>> >>>> On Fri, Jul 27, 2018 at 2:17 PM Andy Lawrence <[email protected]> >>>> wrote: >>>> >>>>> Ha, thanks, I now understand my mistake. >>>>> >>>>> Still locks it up, now to think how/if I'll re-purpose the ROM sleeve. >>>>> >>>>> On Fri, Jul 27, 2018 at 2:05 PM Stephen Adolph <[email protected]> >>>>> wrote: >>>>> >>>>>> Call 61167,2 >>>>>> >>>>>> ;) >>>>>> >>>>>> On Friday, July 27, 2018, Andy Lawrence <[email protected]> wrote: >>>>>> >>>>>>> After the fun with my T102 I decided to continue the fun with a >>>>>>> busted T200 off eBay. After a complete re-cap, fixing lots of keyboard >>>>>>> traces, huge mounts of cleaning I now have a nice functional T200! This >>>>>>> unit came with the RAM fully populated and an EME ROM, which doesn't >>>>>>> seem >>>>>>> to do anything, calling 63012 locks is up, and 63013 returns OK with >>>>>>> nothing else obvious. No NiCad or Y2K mods yet cause I ran out of >>>>>>> parts, >>>>>>> waiting on Digikey. >>>>>>> >>>>>>> Well I got bored waiting on Digikey and thought, how fast can this >>>>>>> thing go, so I swapped the 4.9151 crystal with a 10Mhz (all I had >>>>>>> in-stock), and it boots and runs! So I quickly threw this program >>>>>>> together, prime number example I found online modded to time the loop: >>>>>>> >>>>>>> 1 POWER CONT >>>>>>> 10 CLS >>>>>>> 20 PRINT "LIMIT"; >>>>>>> 30 INPUT L >>>>>>> 31 HH$ = LEFT$(TIME$,2) >>>>>>> 32 MM$ = MID$(TIME$,4,2) >>>>>>> 33 SS$ = RIGHT$(TIME$,2) >>>>>>> 37 SEC = VAL(SS$) + (VAL(MM$) * 60) + (VAL(HH$) * 3600) >>>>>>> 40 FOR N = 3 TO L >>>>>>> 50 FOR D = 2 TO (N-1) >>>>>>> 60 IF N/D=INT(N/D) THEN GOTO 100 >>>>>>> 70 NEXT D >>>>>>> 80 PRINT N; >>>>>>> 90 GOTO 110 >>>>>>> 100 PRINT "."; >>>>>>> 110 NEXT N >>>>>>> 111 HH$ = LEFT$(TIME$,2) >>>>>>> 112 MM$ = MID$(TIME$,4,2) >>>>>>> 113 SS$ = RIGHT$(TIME$,2) >>>>>>> 114 SECE = (VAL(SS$) + (VAL(MM$) * 60) + (VAL(HH$) * 3600) - SEC) >>>>>>> 117 PRINT "Duration = "; SECE ; " Seconds" >>>>>>> 120 END >>>>>>> >>>>>>> Duration factory = 43sec, duration overclocked = 21sec! (with an >>>>>>> input of 100) >>>>>>> >>>>>>> It isn't completely stable, sometimes I have to power it on 2-3 >>>>>>> times, but once on it doesn't seem to have any trouble, aside from the >>>>>>> clock resetting on occasion. I've not yet studied the schematic to >>>>>>> determine if it's because 10Mhz isn't a multiple of the factory 4.9152, >>>>>>> or >>>>>>> because it's simply too fast to read properly, but I'll figure it out. >>>>>>> I ran the above to 1000 a few times without issue or any lock ups. File >>>>>>> transfer even works if I set my PC to 2400bps and the T200 to 1200. >>>>>>> >>>>>>> Overclocked comes at a 20mA over stock hit. >>>>>>> >>>>>>> Fun fun, happy Friday. >>>>>>> BR, >>>>>>> Andy >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>> >>>>> -- >>>>> projecthuh.com >>>>> Never underestimate the carelessness of boredom... >>>>> Most people prefer Windows because most people are idiots... >>>>> >>>>> >>>> >>>> -- >>>> bkw >>>> >>> >>> >>> -- >>> projecthuh.com >>> Never underestimate the carelessness of boredom... >>> Most people prefer Windows because most people are idiots... >>> >>> >> >> -- >> bkw >> > > > -- > projecthuh.com > Never underestimate the carelessness of boredom... > Most people prefer Windows because most people are idiots... > >
