Nice PC-1. LCD looks in good shape. On Sun, Jul 29, 2018, 12:17 PM Andy Lawrence <[email protected]> wrote:
> Thanks to all for the info and helpful tips. > > Last work on the T200 for now, 4PPM clock crystal and 15F Supercap NiCad > swap. So far I've not experienced the power on/stuck issue that was > reported with the T200 supercap mod, and that was with it powered on all > night with a supercap voltage reaching a max of 5.2v. (Powered on brings > the highest charge voltage for me) > > Overall I'm pretty happy, no plans for the T102 aside from 3D printing a > new emblem, as for the T200, I'd like to try some BBS work with that. Also > pictured was my Dad's TRS80 Pocket, which I spent hundreds of hours poking > in basic programs in the 80s, with no tape drive for backing up. :D > > A few picts of the family: > > http://streamlinemechatronics.com/picts/t102.JPG > http://streamlinemechatronics.com/picts/t200.JPG > http://streamlinemechatronics.com/picts/t200ext.JPG > http://streamlinemechatronics.com/picts/trs80pocket.JPG > http://streamlinemechatronics.com/picts/tandyfamily.JPG > > I apologize in advance for the poor lighting in my lab. > > BR, > Andy > > > > > > On Sat, Jul 28, 2018 at 12:07 PM Bob Pigford <[email protected]> wrote: > >> EME (owner and inventor Tracey Allen) made and sold an OptROM for data >> gathering and dumping to higher computers. He named it the OWL for onsite >> weather logger. I have one along with the EME A/D board made as an >> inclined plastic stand for the M100. The board includes a gell battery so >> it will survive power dips. Quite a terrific piece at the time. But the >> A/D inputs are only 8-bit so the fidelity is somewhat limited. >> >> >> >> EME systems now makes later generations of the same concept for data >> gathering: >> >> https://www.emesystems.com/loggers.html >> >> >> >> I think that Tracey’s OWL firmware/software for the Model100 is not in >> the public domain and probably is still copyrighted. >> >> >> >> Might your OptROM be an EME Systems OWL? >> >> >> >> Bob >> >> *From:* M100 [mailto:[email protected]] *On Behalf Of *Andy >> Lawrence >> *Sent:* Saturday, July 28, 2018 9:53 AM >> *To:* [email protected] >> *Subject:* Re: [M100] T200 Restoration and Mods/Playing >> >> >> >> 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... >> > > > -- > projecthuh.com > Never underestimate the carelessness of boredom... > Most people prefer Windows because most people are idiots... > >
