TI-83+ Silver Edition Shipping
Posted by Eric on 4 May 2001, 22:06 GMT
Welp, slowly but surely, the long-awaited new TI-83+ Silver Edition calculators are starting to go live. As with most everything else nowadays, your best bet (if you're *that* anxious for one) is to buy online. So far, from what I've heard, the non-profit calc.org is selling them for $127, and Global Products has them for $129.95 (note: we are not affiliated with either of these sites nor are we endorsing them in any way). Lots of other online retailers will probably offer them soon as well, and eventually maybe they'll pop into your local electronics store too. Anyone have one already? Post about it below.
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The comments below are written by ticalc.org visitors. Their views are not necessarily those of ticalc.org, and ticalc.org takes no responsibility for their content.
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Re: TI-83+ Silver Edition Shipping
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bob cow
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....http://www.schoolmart.com/ has SE for $121
dude, like its a cow
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6 May 2001, 03:30 GMT
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Re: TI-83+ Silver Edition Shipping
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jdhensh
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Mine's in the mail! :) Can't wait. Looks cool and sounds cool. Selling my old one ordinary 83+. Comes with everything. Anyone intrested?
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6 May 2001, 05:51 GMT
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SF II on an HW2 89?
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Zach Hobson
(Web Page)
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I know this is off topic, but this question still goes unanswered despite many posts on previous message boards.
"How can SFII be run on an HW2 89?"
-You cannot put AMS1.0 on an HW2
-This game needs AMS1.0 to work correctly (or so I'm told by its authors)
I have had people tell me that they have gotten it to run, but they havn't explained how.
-If you know how to get SFII to run on an HW2 89, please tell the rest of us wanting to play it how you have done so. I'm sure that the 89 crowd will glorify you (if your method works).
Zach Hobson
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7 May 2001, 04:38 GMT
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Re: Re: Re: Re: SF II on an HW2 89?
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Jon mos
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sorry, your post just makes me laugh :)
My bad, i was looking at the Streets of Rage / NonOS / Thunder / Half-life screenshots. According to altavista, the english translation says that those four programs aren't available yet due to bug issues. I assumed that you had some other link, seeing as the page itself most recently said that the program isn't available. I didn't bother to read down further, which I guess is my fault for being an imbecile. Now, as to the personal attacks, completely unneeded:
"You probably don't need to be playing games in class if you can't even find the link to the file you want."
"If that is to hard (sic), here is the direct link:
www.ti-fr.org/~prog/temp/sor3.zip"
Yeah, I admit it, i'm a frickin' moron. I really don't want to brag, but you've insulted me. I got a 1600 on my SATs, 240 on my PSATs, all 4's in the highest-level classes my school offers, GPA well over 4.2, #1 in class currently, scored high on some national math test, etc. Call me crazy, but I think i've got a pretty good idea when to be playing games, and it's only during non-classwork time.
I thank you for your help, but I find it sad that you feel insecure enough to have to personally attack someone who makes an innocent mistake.
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9 May 2001, 00:05 GMT
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Re: Re: Re: Re: Re: SF II on an HW2 89?
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Zach Hobson
(Web Page)
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I'm sorry I insulted you, I assumed that you were a middle-schooler who had glasses too thick to see the link. No personal offense intended.
As for your comments about me being insecure--I literally laughed to myself when I read that. I myself look down upon others who have the quality of being insecure with themselves. I was not trying to raise my self-esteem. I (not to brag) am a very humble person and am not afraid to be different. For instance: I wear Chuck Taylor All Stars and am an old-school Metallica, Megadeth, and even Iron Maiden fan. I realize that you were most likely retaliating for the comments I made at you. No offense taken (since I know that quality doesn't apply to me anyways). As for your perfect SAT score, congratulations (as well as your GPA, etc.). My current GPA is about a 4.3333, so please don't view my improper use of the form of "to" too badly.
I hope you feel differently about me now, and I hope you have fun with Streets Of Rage 3. Next time, just try scrolling down the page. :)
Concerning playing games in class: I havn't paid attention for over 10 seconds in my math teacher's class this semester, and I have a 97.5%. Some of us <I>can</I> play games and get good grades too (with the added help of a TI-89 [I understand the concepts we are being taught, the calculator just makes work/tests mush easier]) ;)
Zach Hobson
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9 May 2001, 04:44 GMT
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Re: Re: Re: Re: Re: Re: SF II on an HW2 89?
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Jon mos
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see, that's the problem with trying to get personal around here :) anyone that actually signs up for an account and posts on these things is obviously a closet nerd, so we're generally pretty bright, and don't have to pay too much attention (although I do sit up front in all of my calculator-equipped classes now, hmm... guess they're catching on - thank god for f5) Sorry for getting upset, today's been a bad day. Thanks for your help... too bad I can't get it to work HW2, AMS 2.05, etc. I'll wait a bit, it'll work later - i'm plenty content with this CTC2 demo.
apologies,
Jon
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9 May 2001, 05:19 GMT
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ROM Calls
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Stephen Compall
(Web Page)
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In the news at calc.org, it is mentioned that a ROM Call is used to switch the calculator from normal mode to overclocked mode. As is TI's bad habit, does this mean the ROMCALL table is somewhat rearranged? Because of the switches, features that use the extra power would change size in the ROM. This could change the entire thing--is there anything I am missing?
As for programming, it looks as if the Ion/Mirage build will have to be modified to allow for entry of this command in processor-intensive programming.
One more thing to programmers who need more FLOPs: the Z80IS has faster execution times than the 68K; also, the processor is 1.5x the 89. Unless there are other factors, like the FSB or something, the new calculator will be more powerful, speaking strictly in FLOPs, than the 89.
Leading to my final point, it is disappointing to see that TI is slacking off 89/92 series support. The superior screen and programming capability of the 89, versus the raw power if 83+SE, is too confusing to provide a true benchmark. Whatever happened to top-of-the-line?
S11001001
That's right, I don't use C :]
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7 May 2001, 19:41 GMT
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FLOPS
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Ted Burton
(Web Page)
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FLOPS (floating-point operations per second) are not purely determined by clock speed. Chip design is a significant factor in the FLOPS of a chip at a given clock speed. For example, according to GIMPS' benchmarks (link above), the AMD Athlon 900MHz and faster outperforms the Intel Pentium 4 1500MHz (Fast Fourier Transforms are essentially nontrivial floating point calculations). While both chips use superscalar architectures, the Athlon has 3 independent floating point pipelines, while, AFAIK, the P4 has only one floating point pipeline. And both of these chips are 32-bit, so the difference between the z80 and 68000, especially if they were run clock-for-clock, would be even sharper.
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7 May 2001, 22:24 GMT
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Re: Re: FLOPS
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Patrick Davidson
(Web Page)
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It is certainly not generally true that Z80 instructions are "faster" than 68K ones in actual execution, as can be seen if you look at charts of instruction times. On both processors, it is true that the simplest instructions take 4 clock cycles each. However, on the Z80 this will only work for byte-size calculations; to add two 16-bit values on a Z80 takes 11 clock cycles, while the 68000 can do the same thing in 4. The situation would be even worse if you wanted to AND, OR, or XOR two 16-bit values, as you'd need several instructions for this. Additionally, that the Z80 has fewer registers (something definitely uncharecteristic of fast RISC machines), and restricts which registers operations can be done with, greatly increasing the amount of data movement that is likely to be needed. And even though the 68000's multiply and divide instructions are slow, they are still far faster than the code needed to do the same thing on a Z80. Combine these things with the more flexible addressing modes of the 68000 which allow one instruction to do in a fairly small number of clock cycles what would take many instructions and many more clock cycles (not to mention sometimes temporary storage) on the Z80, and the Z80 no longer seems even close to matching a 68000 even if it does have 1.5 times the clock rate.
As far as "real" tests of speed, I don't know of any. I have found some results of the Dhrystone integer benchmark (not a 100% ideal measure of speed in itself, of course) on the web, and depending on which run of it you are using (with speed varying according to compiler optimization, and other things) the 68000 is between 2.44 and 5.77 times as fast as a Z80 at the same clock rate. In my brief search, though, I didn't find any Whetstone or other floating point results on both.
The speed of a basic factoring program is hardly a complete comparison of architectures, as I would expect the interpreters to work quite differently on the two calculators, and when a basic program is running the processor time is certainly not all used on calculations. On either calculator, the number of FLOPS obtained by such testing will be well under the actual number of floating point calculations the processor can do, not only because of the interpreter's overhead, but also because the calculator's use a BCD format for floating point which lowers performance compared to binary floating point.
And on a final note, it is a well-established fact that the TI-89's ROM was made using an inefficient compiler. To quote the great Zeljko Juric, "It seems that whole AMS is written using a non-optimizing compiler ... Some AMS routines are so badly written that I sometimes wonder whether any C compiler can be so non-optimal... "
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8 May 2001, 03:49 GMT
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