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...
