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Offline AssemblyBandit

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You still have time TI!
« on: August 10, 2013, 04:42:58 am »
I was watching the vid on the DJ's Tunnel game for the HP Prime. That's gangster. There is still time TI, school hasn't started yet, bump up the processor in the +C. Even just 20Mhz would be appreciated. Better yet, switch to an ARM processor. They're fast and cheap....

I'm going to make a tunnel game in assembly on the +C to compare to the Prime. Then I'm going to cry myself to sleep...

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Offline Lionel Debroux

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Re: You still have time TI!
« Reply #1 on: August 10, 2013, 05:38:27 am »
The full-screen fill rate of the 84+CSE being terrible (even though some methods for mitigating the damage when using a tilemap engine were found), you'll indeed cry yourself to sleep...

The 84+CSE is indeed a blunder from a technical point of view, but it makes perfect sense from a business point of view - due to the color screen, it looks like a worthwhile update to the TI-Z80 series at low development cost, and people are buying it.
« Last Edit: August 10, 2013, 05:39:09 am by Lionel Debroux »
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Offline TIfanx1999

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Re: You still have time TI!
« Reply #2 on: August 10, 2013, 07:39:50 am »
IIRC 20Mhz is about the max clock speed for a z80. The TI-84 +CSE is at 15. They'd have to change the processor to get more speed, and I don't see that happening anytime soon. <_< They'd also have to rework the calc if they changed processors, and that means more money, and more time spent.
« Last Edit: August 10, 2013, 07:40:02 am by Art_of_camelot »
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Offline DJ Omnimaga

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Re: You still have time TI!
« Reply #3 on: August 10, 2013, 09:47:34 am »
Indeed. That said I like the CSE how it is (although more RAM would be nice) because it makes it old school and pushing old school hardware to its limits is entertaining. :P

And yes the HP Prime rules lol. I wish I had more time because developing for both xLIB CSE and the Prime simultaneously would be epic.
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Offline Juju

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Re: You still have time TI!
« Reply #4 on: August 10, 2013, 11:25:57 am »
The HP Prime is more of a competitor to the TI-Nspire CX, they have pretty much the same specs, but why the Prime seems faster? More RAM?
The OS is less bloated? The LCD is better? With a touch screen?
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Offline Adriweb

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Re: You still have time TI!
« Reply #5 on: August 10, 2013, 11:28:02 am »
largely more of a competitor to the Nspire CX CAS than the Prizm, I'd say.
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Offline Lionel Debroux

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Re: You still have time TI!
« Reply #6 on: August 10, 2013, 11:30:15 am »
Quote
but why the Prime seems faster?
Primarily because the processor is much faster :)
Quote
More RAM?
Nope, only half of the CX.
Quote
The OS is less bloated?
Quite possibly :D
Quote
The LCD is better?
If the Prime's OS uses the 2D accelerator that the S3C2416 chip has, according to its features list, then yes, indirectly (because the processor can tell the 2D accelerator to do stuff, instead of drawing everything on its own). But there's no indication on whether the 2D accelerator is used by the OS (it would be foolish not to !).
Quote
With a touch screen?
Shouldn't be too different from the Nspire's touchpad.
« Last Edit: August 10, 2013, 11:30:36 am by Lionel Debroux »
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Offline Adriweb

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Re: You still have time TI!
« Reply #7 on: August 10, 2013, 11:32:43 am »
Quote from: Lionel Debroux on August 10, 2013, 11:30:15 am
Quote
With a touch screen?
Shouldn't be too different from the Nspire's touchpad.

I'm no expert in this, but the Nspire's touchpad is capacitive but only mono-touch ?
The Prime's screen touch layer is capacitive and multi-touch.


Edit : wait, ok, not talking about that :P
« Last Edit: August 10, 2013, 11:48:41 am by adriweb »
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Offline Lionel Debroux

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Re: You still have time TI!
« Reply #8 on: August 10, 2013, 11:34:55 am »
I mean, reading the Prime's touchscreen is IMO not much faster, or slower, than reading the Nspire's touchpad.
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Offline DJ Omnimaga

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Re: Re: Re: You still have time TI!
« Reply #9 on: August 10, 2013, 04:55:25 pm »
Quote from: Juju on August 10, 2013, 11:25:57 am
The HP Prime is more of a competitor to the TI-Nspire CX, they have pretty much the same specs, but why the Prime seems faster? More RAM?
The OS is less bloated? The LCD is better? With a touch screen?
faster CPU and 2D acceleration.
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Offline Matrefeytontias

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Re: You still have time TI!
« Reply #10 on: August 10, 2013, 04:55:47 pm »
I think both the 400 MHz processor and the 2D accelerator makes the tunnel game so fast. Maybe the calc is actually not that fast with big time-munching operations that do not involve display.
« Last Edit: August 10, 2013, 04:56:14 pm by Matrefeytontias »
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Offline DrDnar

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Re: You still have time TI!
« Reply #11 on: August 10, 2013, 06:36:26 pm »
Quote from: Art_of_camelot on August 10, 2013, 07:39:50 am
IIRC 20Mhz is about the max clock speed for a z80. The TI-84 +CSE is at 15.
Actually, according to Michael_V (who was before your time), TI's engineers believed the top speed of the TI-83+SE ASIC was about 25 MHz. You may have heard some community members throwing around 20 and 25 MHz numbers. Those numbers come from Michael_V, who had contacts in TI's engineering division. Since the TI-83+SE was basically a beta of the TI-84+/C/SE ASICs, that most likely applies to those, too.
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Offline AssemblyBandit

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Re: You still have time TI!
« Reply #12 on: August 10, 2013, 07:03:50 pm »
This is pushing it to the limit. And I can't push it anymore  :'(

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Offline Adriweb

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Re: You still have time TI!
« Reply #13 on: August 10, 2013, 07:30:56 pm »
Games at this speed look very playable for me :)


Edit : and yes, you should release (with the source :P) so people can see how you achieved "reaching the limits" :P)
« Last Edit: August 10, 2013, 07:31:38 pm by adriweb »
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Offline Lionel Debroux

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Re: You still have time TI!
« Reply #14 on: August 11, 2013, 01:45:42 am »
I'm not aware we have confirmed that the Prime uses 2D acceleration, yet.
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