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Hardware > Problem about PIC16F84 version multiboot Cable.

#9354 - ws_d1 - Sat Aug 02, 2003 4:35 pm

hello everybody!
i have made a multiboot cable which uses a PIC16F84 mcu.

(you can find the source code and sch on Http://ajo.thinknerd.com/gba/ )
it also provide compiled windows exe which is working perfectly on my pc.

recently,I want to make a more powerful cable use 51mcu.So I modified main.c a little and compiled. it's Communicatin is smoth but the last CRC check can never pass.

i wonder if there is something wrong in the source code in CRC part.

can anybody provide me some information about the CRC protocol used in GBA?or provide some source code about this?
or Some other ideas?

#9416 - ws_d1 - Mon Aug 04, 2003 11:55 am

Forgive my poor english.

#9428 - Lord Graga - Mon Aug 04, 2003 4:44 pm

You *could* make a cable without a chip :)

http://www.work.de/nocash/gba-xboo.htm

#9502 - ws_d1 - Wed Aug 06, 2003 3:53 pm

thank you for your warm heart,but I must to know every thing in my project.I don't like a blackbox in my work.and use a chip can make something sometimes simple,I can make my GBA to control hardware directly.


is it ture that nobody can help me? sighing

#9504 - Wanderer - Wed Aug 06, 2003 5:03 pm

Hi,

sorry I can't really help you either but, these links might be of some use

The GBATek spec goes into some detail on the communications protocol used by the GBA and can be found at:

http://www.work.de/nocash/gbatek.htm

You could also take a look at:

http://www.ziegler.desaign.de/GBA/gba.htm

This page contains some information about hardware you can get/make for the GBA and contains links to some other pages that might be useful to you

good luck,


Wanderer.

#9624 - ws_d1 - Mon Aug 11, 2003 5:13 pm

thank you very much.
It's very kind of you.