Yay!
Now all I need is $135 extra dollars...

I think I will get it because I don't have an 89 yet and I was waiting for this to come out.

Same here. Although I'm waiting for Target to stock it so that I can use my gift card and get it for $114.

At the site describing the new ti-89t, where it describes "product details" at bullet 21 it says it graphs "recursively-defined sequences". Does that mean it graphs fractals?
Also, what is the frequency of the ti-89t's cpu.

<< Also, what is the frequency of the ti-89t's cpu. >>

Same as the regular 89's I'm guessing, 12MHz.

Don't HW2s have a 15 MHz processor?

No.

Also, the 89Ti is a HW3.

It's funny, you ti folks probably never visit comp.sys.hp48:
Ve've run perfectly our g+'s at 203mhz!!! At this speed the (arm9 assembly written) factorial routine takes about 1 min to display 9999!.
Also, should I mention that the lcd controller integrated in the processor is used; Movies (stored in huge sd card) display beatifully in hardware 16 level grayscale.

The only thing that the g+ lack is manufacturing quality; but doesn't everything today?

Anyways, drop all these titanic (whatever) and switch to hp.

Cheers

I'm not sure hps have 203 mhz

"recursively defined sequences"

That is a sequence where the value of the current term is dependent on values of the previous term. Put another way, it means that there is a "memory" in the sequence, such that past values will impact current values.

Example:
a1 = 1
a2 = 2
an = a(n-1) - 0.5 * a(n-2)

so that a3 = 2 - 0.5(1) = 1.5
a4 = 1.5 - 0.5(2) = 0.5
a5 = 0.5 - 0.5(1.5) = -0.25
a6 = -0.25 - 0.5(0.5) = -0.5
a7 = -0.5 - 0.5(-0.5) = -0.25
etc...

theres a mistake in a7, but you get the picture.

In reality, this is nothing new, since even the TI-82 can do this. It has a sequential function mode, though you can only do U[n-1], and not U[n-2] and so forth.

I'm getting one of these babies. Oh yeah! :)

BTW, check out my new website and tell me what you think: pingpongboss@yahoo.com. I just started it a week ago so any help would be appreciated.

The site is www.markalicia.com

Get a V200 instead...

Sure, let's all flamebate.
That web site is ugly. Try my link instead. My latest one (a few hours ago), f4l.sf.net, is ugly cause it's someone else's code, mostly.

Uh, no. V200 are a little bulky, slow, graph functions far too slowly compared to the 83+SE. I pressume the 89Ti graphs faster and fits quite easily in your pocket; also has a faster CPU and more memory plus new LCD tech. and usb link, yay. I'm a little dissapointed that they didn't include backlighting though. All it takes is a bit of EL and a switch/button to turn it on and off when you can't see the screen due to... *lack of light. =P

You assume much.

>> "V200 are a little bulky, slow, graph functions far too slowly compared to the 83+SE."

So are the TI-89 and Titanum (minus the "bulky").

>> "I pressume the 89Ti graphs faster and fits quite easily in your pocket;"

I _presume_ that the 89Ti has a 12MHz processor like the V200, although it is much smaller, just like the V200 is much smaller than the 92+. And the slight increase in size for the V200 is a minor consequence of an extended QWERTY keyboard and higher resolution. I liked the positioning of HAND and the F# keys on the 92+ better, though.

>> "also has a faster CPU and more memory plus new LCD tech."

Hm... V200: 12MHz M68KSE, 89Ti: 12MHz M68KSE, V200: 180KB RAM, 89Ti: 180KB RAM, V200: 2.7MB Flash, 89Ti: 2.7MB Flash. So where's the faster CPU and more memory? And the V200 has 128x240 pixels, while the 89Ti has a lower res (I can't remember off the top of my head, but it's around 99x176). And the 89Ti uses same LCD tech as the V200, 89, 92+, 92, 84+SE, 84+, 83+SE, 83+, 83, 86, 85, 82, 81, 80, 73... There's been no major LCD upgrade in TI's LCD screens beyond screen res for a long time...

>> "and usb link, yay. "

Wow. A USB link. Like my V200 can't use the Silver USB Link cable? The 89Ti just has it built in, all the better without that kind of stuff clogging the hardware in a V200.

>> "I'm a little dissapointed that they didn't include backlighting though. All it takes is a bit of EL and a switch/button to turn it on and off when you can't see the screen due to... *lack of light. =P"

Yeh, backlighting wastes a ton of electricity, it's no wonder they didn't include it.

Now, learn something: Don't assume things. As my Health teacher says, assuming makes an @$$ out of U and ME (@$$ U ME).

The main reason for my getting a 89Ti as opposed to a V200 is that the V200 is forbidden on most standardized tests because of the QWERTY keyboard

My mom says that. And then she tells me not to swear.

When comparing the 89Ti and V200 you will find they are almost the same except that the 89Ti has a slightly smaller LCD at 100x160 res but has additional contrasting technology, usb link cable support + i/o, more presinstalled Apps.

Personally I find the 89Ti style keylayout easier to use than the V200 as it's far simpler to learn than the QWERTY touch typing where you may be wary of pressing two keys as they're small. The bulkiness* of the V200 is that it's too wide and I find it's quite easy to drop(lol). Any ALPHA+Key haters? *not me!* 2nd is useful.

Uh, the button? EL backlighting, I must say, would be idiotic to have on a calculator as it would consume far too much power but this can be solved with a button (programmed in the OS) to turn the EL on and off.

I may be wrong but I find the new Z80 CPUs much more faster than the Motorola CPUs...to the point, very disappointed in using a slow CPU in yet another CAS* calculator. Graphing with these calculators can be so annoying in maths as it takes half the time with an 83+SE.

The Z80 processors might seem faster, but that doesn't mean that they are. This false impression probably comes from these facts:

1) The TI-83+ SE has a much smaller screen, so it takes much less work to draw a graph (or anything else) all the way across the screen. This applies to all programs, whether not they were made by TI.
2) The system software of the 68K calculators is not nearly as efficiently programmed as the software for the Z80 calculators. This problem usually doesn't apply to software not made by TI.

A Z80 processor is usually much less powerful than a 68K at the same clock rate. Here are some of the reasons:

1) If using 16-bit calculations, operations take far more clock cycles. For example, a 16-bit addition between two registers takes only 4 clock cycles with a 68K, but 11 clock cycles with the Z80.
2) Many operations that can be done in one instruction on the 68K take many on the Z80. For example, adding 8 to a 16-bit register can be done on the 68K with one instruction in 4 clock cycles, but on the Z80 it takes 2 instructions and 21 clock cycles (and worse if you need to preserve all other register).
3) The Z80 has fewer registers, and many instructions have only one possible destination register, so extra time may be needed to move values around.
4) The Z80 doesn't even have multiply or divide instructions; if you need to do these operations, you must write entire functions to perform these operations which are (except in some special cases) several times slower than the 68K instructions.

Heh, point being: slow CPU used yet again in another TI product. No offense TI but takes some pointers from HP. =P Like with the App integration (Aplet).

I believe the point of his post was to show you that the 68k calculators are not slower than the z80 ones.

I say, don't incurage him by giving him reasons to spout more garbage. Let this die here.

-W-

Just to clear things up: I wasn't quoting "Patrick"

Don't diss the z80-it has its own little niche in the calculating industry

And to be perefectly honest
Strangley, I _REALLY_ enjoy programming this 8-bit microprocessor for some reason

I've opened a tasm80.tab file and found these
the only thing i could think was MLT means multiply, but by what?
[this is ripped right from the tasm80.tab file of tasm3.2 final if ur wondering]

INSTR ARGS   OP  BYTES RULE CLASS SHIFT OR
 MLT   BC 4CED   2    NOP  2
 MLT   DE 5CED   2    NOP  2
 MLT   HL 6CED   2    NOP  2
 MLT   SP 7CED   2    NOP  2

Anyone know about these?

also bit-shifting one to the right is a division by two

The "MLT" is a multiply instruction, but is not available on the Z80. Look in the fifth column (which indicates class). Unlike the normal Z80 instructions, this one has a "2" here. Now look at the top of the file to see what this means; having bit 1 set (giving a number of 2) means the instruction is not for the Z80, but rather only for the HD64180.

Bit-shifting is nice, but what if you want to divide by 3? Or 5? Or maybe even a variable number? I referred to special cases in my last post, and this is what I meant.

There is a small mistake in my previous post; "class" is actually the sixth column.

I see now, I never knew that this .tab file was for more than one processor, I thought it only covered the z80. Do you know what this instruction does btw(like if u had to rewrite in satandard z80 asm code, cuz now im kinda curious about how it works, what its outputs are, etc.)

It does appear to be a multiply instruction; where MLT HL multiplies H and L and puts the result in HL. I didn't find out if it is signed or unsigned. There are probably some source files in the source directories of ticalc.org that have routines doing this sort of thing.

nvm then im fine with " b_call(_HTimesL)"
its esentially H*L->HL

Only problem with b_call(_HTimesL) is that it destroys some registers and is a lot slower than if you made your own routine or ripped somebody else's. If you want a good one or to learn how to make one, check out Sean McLaughlin's "Learn TI83+ Assembly in 28 days". It's good.

I've read that guide and IT IS AWXSOME!!
I know how to do multiplying like that but I like, saving space however possible(unless I'm _THAT_ desperate for a fast prog)

- Nick_S
"Mmm...byte-sized programs..."

Good Idea! It really is the better calculator!

There's another screw loose in my V200, and it finally died. I wouldn't trust the QC on them.