Forgot the date code of 1988, 9. On Mon, Jul 4, 2016 at 8:03 PM, Josh Malone <[email protected]> wrote:
> > 20160704_192827.jpg > <https://drive.google.com/file/d/0BwcKlz5N5PLcVXkyenAxR3ZEcENHVjRSMTdsNmQ1RVlzMXZV/view?usp=drive_web> > > 20160704_193204.jpg > <https://drive.google.com/file/d/0BwcKlz5N5PLcR1FpUkw1Mlg3ejRzQzY3cEVkaEpLQThJNmlF/view?usp=drive_web> > > 20160703_204651.jpg > <https://drive.google.com/file/d/0BwcKlz5N5PLcd0xRczZJSjBySERSTmVRTWRiNlAta0tQd3lN/view?usp=drive_web> > Well - on closer inspection, they are *all* soldered, but I'm not sure > that they were soldered at the factory. The left-most chip was clearly done > by hand -- although I suppose it might still have come from the store that > way. > > The left-most chip (M9) is different from the rest - it's an NEC D4464 vs > the other 8464 ICs. > > Model is 26-3803, Serial 809001955. I'm guessing it's a later "revision" > where they added the final 8k once RAM prices dropped enough to sell it > fully-loaded. The uncleaned flux on the top of the board clearly looks > hand-soldered to me. Do you figure this is the most likely place to start > looking for a bad chip? Any reason to suspect the NEC over the other 3 > chips. I don't recognize the logo (serif capital F with horizontal bars > above and below). > > Hope the large pictures go through. :-/ > > -Josh > > On Mon, Jul 4, 2016 at 6:44 PM, Mike Stein <[email protected]> wrote: > >> *All* of them? Are you sure? Even the left-most one? >> >> I always believed that there were only two models (in NA): >> >> 26-3801, an 8K base memory version with three expansion sockets, and >> 26-3802, a 24K base memory version with only one expansion socket. >> >> What's your model (and serial) number? >> >> m >> >> ----- Original Message ----- >> *From:* Josh Malone <[email protected]> >> *To:* Model 100 Discussion <[email protected]> >> *Sent:* Monday, July 04, 2016 5:38 PM >> *Subject:* Re: [M100] 32k M102 suddenly showing 24k >> >> No, they're all soldered. I was hoping a reseat would be warranted, but >> alas. >> >> On Jul 4, 2016 3:39 PM, "John R. Hogerhuis" <[email protected]> wrote: >> >>> If you have socketed ram chips you may need to reseat then. >>> >>> -- John. >>> >>> On Monday, July 4, 2016, Josh Malone <[email protected]> wrote: >>> >>>> Thanks. For some reason, finding the 100 cold-start procedure via >>>> Google wasn't working for me. >>>> >>>> However, the free memory hasn't changed. It's still stuck at 24k. I >>>> guess it's time to get out the scope/meter/etc. and see what's going on. >>>> Not looking forward to this and not exactly sure what to try next. >>>> >>>> BTW - shouldn't your sig take the Model 100 into account? :) >>>> >>>> -Josh >>>> >>>> On Mon, Jul 4, 2016 at 8:04 AM, Ron Lauzon <[email protected]> wrote: >>>> >>>>> Hold the reset button on the back, then press Control-Break. >>>>> >>>>> >>>>> On Mon, Jul 4, 2016 at 7:07 AM, Josh Malone <[email protected]> >>>>> wrote: >>>>> > What procedure should I use for a cold start? I figured the memory >>>>> power >>>>> > should do it. >>>>> > >>>>> > >>>>> > On Jul 3, 2016 10:52 PM, "John R. Hogerhuis" <[email protected]> >>>>> wrote: >>>>> >> >>>>> >> Sounds like it is crashed. Try cold starting it and see if memory >>>>> is back >>>>> >> to normal. The typical ways this happens is running an ML program >>>>> with a bug >>>>> >> or attempting to load a untokenized basic program with a BA >>>>> extension. >>>>> >> >>>>> >> Logical operators can be used for masking and whatnot. But to shift >>>>> in >>>>> >> BASIC you need multiplication and division by powers of two. >>>>> >> >>>>> >> -- John. >>>>> >> >>>>> >> On Sunday, July 3, 2016, Josh Malone <[email protected]> wrote: >>>>> >>> >>>>> >>> So, >>>>> >>> >>>>> >>> I was sitting down to hack on some basic code >>>>> >>> ( >>>>> https://www.reddit.com/r/retrobattlestations/comments/4qs0f3/july_is_basic_month_the_challenge_turtle_graphics/ >>>>> ) >>>>> >>> and typed in a quick basic statement to verify that Tandy 102 >>>>> basic has >>>>> >>> bitwise operators (it seems to). The command was something like >>>>> "print c and >>>>> >>> 2" or something stupid like that. To my surprise, my 102 reset >>>>> itself. All >>>>> >>> my files were gone (backed up, so no real loss) but now the menu >>>>> is showing >>>>> >>> 21446 bytes free. Some gremlin has stolen 8k of my RAM! >>>>> >>> >>>>> >>> I'm so perplexed by this, I just opened up my 102 to visually >>>>> verify is >>>>> >>> has 32k (indeed, all 4 RAM chips installed - although 1 is a >>>>> different chip >>>>> >>> than the other 3). I've let the system sit for >1 hour with memory >>>>> switch >>>>> >>> off and power removed. No change. >>>>> >>> >>>>> >>> What on earth could have happened? >>>>> >>> >>>>> >>> Last clue I have is that I re-loaded FILSIZ.BA and when I run it, >>>>> I get >>>>> >>> OV error on line 9. >>>>> >>> >>>>> >>> Thanks for any help anyone can provide. >>>>> >>> >>>>> >>> -Josh >>>>> >>>>> >>>>> >>>>> -- >>>>> Ron Lauzon - rlauzon at acm dot org >>>>> Homepage: http://webpages.charter.net/rlauzon/ >>>>> Weblog: http://ronsapartment.blogspot.com/ >>>>> >>>>> DNRC: Lord of All Things That Are Fattening >>>>> >>>>> "To be sure, conservative radio talk show hosts have a built-in >>>>> audience unavailable to liberals: People driving cars to some >>>>> sort of job." - Ann Coulter >>>>> >>>>> Microsoft Free since July 06, 2001 >>>>> Running Ubuntu 16.04 >>>>> >>>> >>>> >
