Author Topic: z80e for Nspire  (Read 11016 times)

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Offline Matrefeytontias

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z80e for Nspire
« on: November 16, 2014, 04:26:44 pm »
Hey guys,

the KnightOS team having started (more than started actually) working on z80e, a z80 emulator written in C, and after me porting it to Windows (it uses SDL), I thought about porting it to the TI-Nspire. And guess what ? I did :w00t:

Be warned : the emulator itself not being finished, the Nspire version isn't either. Of course, I plan to mirror progress that's being made on the PC version to the Nspire version.

So far it doesn't actually run the TI-OS, but it does run the attached KnightOS ROM. You'll still see that some things aren't right, but that's really the emulator's fault. Also, it'll work both with Ndless 3.1 and Ndless 3.6, the PRG version being for Ndless 3.1.
I don't release the code yet because I still have a huuuuuge lot of clean-up to do, due to the Nspire not using many features that the PC version uses (like the CLI debugger).

But yeah, do check out the attachements. Please let me know about any bug that might crash or freeze your calc, and in what circumstances. Those may be known emulation problems, or not.

Share comments :)

EDIT : oops, forgot to put control scheme.

So yeah, control scheme so far :

TI-84+SE keyTI-Nspire key
F1A
F2B
F3C
F4D
F5E
Down, left, right, upDown, left, right, up (click on touchpad calcs)
2ndCtrl
AlphaShift
EnterEnter
ClearMenu
ModeEsc
DelDel
NumkeysSame numkeys
ONTab

You can exit the emulator at any time by pressing Q. If it doesn't work, then that's pretty much that the emulator itself is stuck, and not the emulation.

EDIT 2 : screenshot ! How could I have forgotten that.



EDIT 3 : dayum, forgot to compile with -Ofast. Attachment updated !
« Last Edit: November 16, 2014, 04:56:00 pm by Matrefeytontias »

Offline aeTIos

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Re: z80e for Nspire
« Reply #1 on: November 16, 2014, 04:26:58 pm »
FIRST

Woah, impressive O.O

Just tried this out and it's pretty cool. It's not that fast, though :\
« Last Edit: November 16, 2014, 04:44:45 pm by aeTIos »
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Offline Keoni29

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Re: z80e for Nspire
« Reply #2 on: November 16, 2014, 04:27:16 pm »
SecONd!
Edit: first edit!
« Last Edit: November 16, 2014, 04:34:53 pm by Keoni29 »
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Offline Matrefeytontias

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Re: z80e for Nspire
« Reply #3 on: November 16, 2014, 04:47:10 pm »
Yeah, speed is a problem. As I said, the emulator is far from finished. It might even crash without a warning.

Progress on this version will only happen when progress on the PC version happens. I want to keep both versions in phase.

Offline Ivoah

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Re: z80e for Nspire
« Reply #4 on: November 16, 2014, 05:23:02 pm »
Is this eventually going to be able to emulate TI-OS?
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Offline Matrefeytontias

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Re: z80e for Nspire
« Reply #5 on: November 16, 2014, 05:26:56 pm »
It's planned to. At the end, it's planned to be a 100% accurate emulator, not only for KnightOS.

Offline DrDnar

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Re: z80e for Nspire
« Reply #6 on: November 16, 2014, 05:36:18 pm »
You should load TI-Boy up, port the emulator to emscripten, and run the emulator in a Bochs so that you can run an emulated GameBoy in an emulated TI-83+ in an emulated in Nspire in an cross-compiled Javascript in an emulated PC.
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Offline bb010g

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Re: z80e for Nspire
« Reply #7 on: November 16, 2014, 05:43:36 pm »
Reminds me of the old TI-84 emulator. How's this one different? Could the old one not run KnightOS?
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Offline Matrefeytontias

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Re: z80e for Nspire
« Reply #8 on: November 16, 2014, 05:45:11 pm »
So far, the difference is that this one is actually being worked on, since the one you posted is dead. For now, it's less feature-fledged though, but that will come with time.

Offline Streetwalrus

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Re: z80e for Nspire
« Reply #9 on: November 16, 2014, 07:10:35 pm »
You should load TI-Boy up, port the emulator to emscripten, and run the emulator in a Bochs so that you can run an emulated GameBoy in an emulated TI-83+ in an emulated in Nspire in an cross-compiled Javascript in an emulated PC.
Fwiw, z80e does work with emscripten. Emuception isn't happening anytime soon though. :P

Offline aeTIos

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Re: z80e for Nspire
« Reply #10 on: November 16, 2014, 10:17:57 pm »
Yeah it's sad to have Jacobly gone, calcemu could have been fantastic :/
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Offline Sorunome

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Re: z80e for Nspire
« Reply #11 on: November 17, 2014, 08:55:28 am »
Don't forget to emulate the undocumented opcodes :P

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Offline aeTIos

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Re: z80e for Nspire
« Reply #12 on: November 17, 2014, 09:16:45 am »
They are being emulated. z80e aims to be 100% compatible with everything.
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Offline Streetwalrus

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Re: z80e for Nspire
« Reply #13 on: November 17, 2014, 02:40:28 pm »
Iirc the CPU core is already complete but I might be wrong.

Offline Ivoah

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Re: z80e for Nspire
« Reply #14 on: October 30, 2015, 08:04:17 pm »
Do you have any plans to push your changes back to the z80e repo?
http://codinghobbit.no-ip.org
My Calcs:
TI-86 (now broken) $2
TI SR-56 - $0
TI-Nspire CX CAS - $152
TI-84+ Silver Edition - $56
TI-84+ Silver Edition - $0
TI-85 - $0
TI-73 Explorer VS - $10
ViewScreen - $3