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Author Topic: eZ80 Hardware Discussion  (Read 57785 times)

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Offline Happybobjr

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Re: eZ80 Hardware Discussion
« Reply #105 on: August 11, 2010, 12:43:21 pm »
I would vote for alpha-lock combo.  It lessens the keys you have to look through .
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Re: eZ80 Hardware Discussion
« Reply #106 on: August 12, 2010, 08:58:30 am »
calc84maniac is already working on an emulator?
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Offline matthias1992

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Re: eZ80 Hardware Discussion
« Reply #107 on: August 12, 2010, 09:52:53 am »
I suggest we use the OP registers for variables? Since OTBasic vars are going to be prefix it has to be a quite a static (with that I mean that different varaibles have a fixed lenght. Especially the small ones like bool, byte, short and even int) buffer. And it has to have fast reading and writing. I think the OP's are perfect for this. Does anybody know how much memory in total the OP buffers supply?
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Offline calcdude84se

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Re: eZ80 Hardware Discussion
« Reply #108 on: August 12, 2010, 10:23:52 am »
The OP "registers" are actually six 9-byte (?) memory areas in RAM, and are specific to the TI-OS.
There will probably be an alternate strategy used ;D
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Offline matthias1992

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Re: eZ80 Hardware Discussion
« Reply #109 on: August 12, 2010, 10:55:06 am »
Quote from: calcdude84se on August 12, 2010, 10:23:52 am
The OP "registers" are actually six 9-byte (?) memory areas in RAM, and are specific to the TI-OS.
There will probably be an alternate strategy used ;D
I think it was far more then that...I recall about 2-4K in total...I might be mistaken tho. Well then I suggest adding a very small superfast ram for varaibles.
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Offline alberthrocks

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Re: eZ80 Hardware Discussion
« Reply #110 on: August 13, 2010, 01:46:05 pm »
@willrandship: NO emulators, period. We don't want to give TI a reason to sue us.

In general, it's either Alpha Lock or a separate keyboard (ABCDE on the botton, like the TouchPad in a way)

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Offline program4

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Re: eZ80 Hardware Discussion
« Reply #111 on: August 13, 2010, 04:31:09 pm »
The calculator should have more "durable" keys than the 84, because for example, the 2ND button on my calculator is already worn out and slightly pushed in, so when I push it the keypress doesn't always register.
« Last Edit: August 13, 2010, 04:33:34 pm by program4 »
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Offline tloz128

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Re: eZ80 Hardware Discussion
« Reply #112 on: August 13, 2010, 06:04:12 pm »
Here are just some final thoughts that I have:
-I would be okay with it having a backlit screen, just as long as you could turn off the light
-the 3.5 mm headphone jack shouldn't be advertised as a headphone jack, but sound should be supported by the OS and will be easy to put in programs
-it should come preloaded with a port of axe and some math programs
-I think that it should most definitely have rechargable lithium batteries charge when plugged into the computer
-do not make it seem too much like the ti-8x calcs in its appearance
-calculus support(?)
-3d graphing(?)
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Re: eZ80 Hardware Discussion
« Reply #113 on: August 13, 2010, 06:05:31 pm »
3D Graphing is almost a must (although that is more of a firmware discussion :P), and the Axe port is all Quigibo.  As for calculus support, I don't know what users will need for calculus, so I couldn't say.
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souvik1997

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Re: eZ80 Hardware Discussion
« Reply #114 on: August 13, 2010, 08:21:06 pm »
A touch pad instead of arrow keys would be nice, and also make it look better.
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Offline Happybobjr

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Re: eZ80 Hardware Discussion
« Reply #115 on: August 13, 2010, 09:08:51 pm »
i think that he was talking about an emulator for this calc. we would be making.
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Offline calcdude84se

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Re: eZ80 Hardware Discussion
« Reply #116 on: August 13, 2010, 09:10:02 pm »
That'd be useful. It could be tested out w/o ever bothering to make it yourself/buy it.
Emulators are in general a good thing ;D
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Re: eZ80 Hardware Discussion
« Reply #117 on: August 13, 2010, 09:45:55 pm »
I may have mentioned it before, but I'd like to suggest a battery indicator light.
*edit* Fixed my dyslexic sentence  :P
« Last Edit: August 14, 2010, 07:50:37 am by Art_of_camelot »
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Offline FinaleTI

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Re: eZ80 Hardware Discussion
« Reply #118 on: August 13, 2010, 10:53:55 pm »
Quote from: souvik1997 on August 13, 2010, 08:21:06 pm
A touch pad instead of arrow keys would be nice, and also make it look better.
Since this is supposed to compete with the TI-8x line, I think people might be more used to arrow keys. Or perhaps there could be different hardware versions (one with arrow keys, another with a touchpad) like the TI-Nspire.
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Offline Happybobjr

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Re: eZ80 Hardware Discussion
« Reply #119 on: August 14, 2010, 12:36:36 pm »
i like arrow keys better,  It always feels just right....
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