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...
