π
<-
Chat plein-écran
[^]

Project Release: FPGA as TI Link cable. (Verilog)

Nouveautés, projets, mises à jour.

Project Release: FPGA as TI Link cable. (Verilog)

Unread postby nyancat » 13 Oct 2020, 09:35

Use an FPGA to link your computer with your TI calculator. Faster than TI cables, MIT license.

It is written in verilog and does not use vendor libraries, therefore it should work on pretty much any dev board that can do 3.3v. I've developed this with an iCEstick and a TinyFPGA BX using the yosys+nextpnr stack.

It's been tested on ti89 and v200 as they're the ones I have. It seems no less reliable than the grey and silver cables I have, and dramatically faster.

https://github.com/rvalles/dbus_ti_link_uart_verilog

Please give it a try if you're able.
User avatar
nyancatProgrammeur
Niveau 2: MI2 (Membre Initié)
Niveau 2: MI2 (Membre Initié)
Level up: 0%
 
Posts: 3
Joined: 13 Oct 2020, 09:20
Gender: Not specified
Calculator(s):

Re: Project Release: FPGA as TI Link cable. (Verilog)

Unread postby Wistaro » 13 Oct 2020, 11:16

Very interesting! Thanks for sharing :)

I'm wondering if it would be possible to do the same for the TI-8X serie, that uses the TI-GraphLink.
Nouveau sur le site,
Anonymous
? Avant de poster sur le chat et sur le forum, n'oublie pas de . En cas de problème, tu peux m'envoyer un message, je réponds rapidement.

Liens utiles:

Image
Découvre mes programmes et mon site!
User avatar
WistaroSuper Modo
Niveau 15: CC (Chevalier des Calculatrices)
Niveau 15: CC (Chevalier des Calculatrices)
Level up: 71.6%
 
Posts: 3050
Images: 37
Joined: 25 Feb 2013, 16:21
Location: Toulouse
Gender: Male
Calculator(s):
Class: Etudiant ingénieur (dernière année)
YouTube: Wistaro
Twitter: Wistaro
GitHub: Wistaro

Re: Project Release: FPGA as TI Link cable. (Verilog)

Unread postby nyancat » 13 Oct 2020, 12:08

Wistaro wrote:Very interesting! Thanks for sharing :)


Thank you.

I'm wondering if it would be possible to do the same for the TI-8X serie, that uses the TI-GraphLink.


It should. While I don't own one (yet), they likely maintain the bus with 3.3v pullups too. I'd suggest to check with a multimeter before you plug anything, as 5v would fry your average FPGA 3.3v i/o pin.

If you're in a position where you can try this (that is, if you've got a FPGA devboard and understand it), it'd be very nice if you could. If anything, I'm quite curious about what transfer speeds these calculators would achieve with this.

I suspect that, at worst, you'd have to lower the dbus clock, which is a parameter in the Makefile, to something more reasonable.
User avatar
nyancatProgrammeur
Niveau 2: MI2 (Membre Initié)
Niveau 2: MI2 (Membre Initié)
Level up: 0%
 
Posts: 3
Joined: 13 Oct 2020, 09:20
Gender: Not specified
Calculator(s):

Re: Project Release: FPGA as TI Link cable. (Verilog)

Unread postby Lionel Debroux » 07 Nov 2020, 10:04

I missed this board's instance of that topic :)

TI-Z80 calculators do indeed use 5V on the legacy I/O port, and TI-68k calculators using 3.3V tolerate (and interoperate with) 5V calculators.
Membre de la TI-Chess Team.
Co-mainteneur de GCC4TI (documentation en ligne de GCC4TI), TIEmu et TILP.
User avatar
Lionel DebrouxSuper Modo
Niveau 14: CI (Calculateur de l'Infini)
Niveau 14: CI (Calculateur de l'Infini)
Level up: 7.9%
 
Posts: 6591
Joined: 23 Dec 2009, 00:00
Location: France
Gender: Male
Calculator(s):
Class: -
GitHub: debrouxl


Return to Actualités

Who is online

Users browsing this forum: No registered users and 1 guest

-
Search
-
Featured topics
Comparaisons des meilleurs prix pour acheter sa calculatrice !
Découvre les nouvelles fonctionnalités en Python de l'OS 5.2 pour les Nspire CX II
Découvre les nouvelles fonctionnalités en Python de l'OS 5.5 pour la 83PCE/84+C-T Python Edition
Omega, le fork étendant les capacités de ta NumWorks, même en mode examen !
1234
-
Donations / Premium
For more contests, prizes, reviews, helping us pay the server and domains...

Discover the the advantages of a donor account !
JoinRejoignez the donors and/or premium!les donateurs et/ou premium !


Partner and ad
Notre partenaire Jarrety Calculatrices à acheter chez Calcuso
-
Stats.
592 utilisateurs:
>570 invités
>15 membres
>7 robots
Record simultané (sur 6 mois):
6892 utilisateurs (le 07/06/2017)

-
Other interesting websites
Texas Instruments Education
Global | France
 (English / Français)
Banque de programmes TI
ticalc.org
 (English)
La communauté TI-82
tout82.free.fr
 (Français)