Topic: Coolrunner Resistor Removal And Programming... (Read 47 times)

ddsdavey · « **on:** October 06, 2011, 03:00:00 PM »

Just checking but my board requires the removal of resistor R1,can this be done PRIOR to programming or does it have to be after its programmed? Do all the necessary diodes etc also have to be applied prior to programming also?
Appreciated as always!

Dicko316 · « **Reply #1 on:** October 06, 2011, 05:54:00 PM »

As far as im aware you program then remove the resistor. Which board your using? Its normally R2 you remove isnt it though?

ericksgotxbox · « **Reply #2 on:** October 06, 2011, 08:38:00 PM »

You should program it before you remove the resistor, I removed the resistor and it isn't recognized by iMpact... anybody have the Ohms of the resistor? I want to try replacing the resistor and try programming it

ddsdavey · « **Reply #3 on:** October 07, 2011, 01:36:00 AM »

Im using Ngzangs revision b board http://imageshack.us/photo/my-images/822/f...te20110905.jpg/ which states removing r1.
Yep i get no response,what a chimp! Glad i kept the resistor now!
Edit... replaced R1,unbridged R2 and everythings rosey in the garden!

This post has been edited by ddsdavey: Oct 7 2011, 08:59 AM

Technitian3 · « **Reply #4 on:** October 07, 2011, 02:40:00 AM »

Resistor R1 is just a jumper, 0ohms. Use wire if you lose it.

derickchow · « **Reply #5 on:** October 07, 2011, 03:50:00 AM »

QUOTE(ddsdavey @ Oct 7 2011, 02:36 AM)

Im using Ngzangs revision b board http://imageshack.us/photo/my-images/822/f...te20110905.jpg/ which states removing r1.
Yep i get no response,what a chimp! Glad i kept the resistor now!
Edit... replaced R1,unbridged R2 and everythings rosey in the garden!

I have a some one. I want to work with fat. have you make it work yet?

ddsdavey · « **Reply #6 on:** October 07, 2011, 04:51:00 AM »

QUOTE(Technitian3 @ Oct 7 2011, 09:40 AM)

Resistor R1 is just a jumper, 0ohms. Use wire if you lose it.

I tried bridging it mate,made no difference.Tried a jumper also (is it not the same?) still getting "unknown device" like 13 of them in the chain!

Technitian3 · « **Reply #7 on:** October 07, 2011, 07:03:00 AM »

QUOTE(ddsdavey @ Oct 7 2011, 02:51 AM)

I tried bridging it mate,made no difference.Tried a jumper also (is it not the same?) still getting "unknown device" like 13 of them in the chain!

What are you using to program the CPLD?

ericksgotxbox · « **Reply #8 on:** October 07, 2011, 07:11:00 AM »

Are you powering the Coolrunner? I'm using a extra XBox 360 DVD cable to connect to a CK3 kit and powering it from there... still getting "Many unkown devices detected" and then it fails to see the C-Mod..(IMG:style_emoticons/default/sad.gif)

ddsdavey · « **Reply #9 on:** October 07, 2011, 07:35:00 AM »

QUOTE(Technitian3 @ Oct 7 2011, 02:03 PM)

What are you using to program the CPLD?

Parallel 3,yes i know about the power issue but apparently it should still correctly detect???
Im also using ck3 to power.
Tbh it does not even respond now so ive given up and ordered another!
Ill just program it first next time.

ddsdavey · « **Reply #10 on:** October 07, 2011, 04:19:00 PM »

All working now,i was messing for hours when the parallel 3s pinout was wrongly mapped!
Booted instantly first time not that that means anything lol!
Thanks for your priceless knowledge Technitian3 it came in extremely handy.

Author Topic: Coolrunner Resistor Removal And Programming... (Read 47 times)