Posts by loady

sorted...i soldered in the spansion doh....anyway, put the original in this time and i got boot again and flash...i watched the lcd..it changed from boot>flsh>boot in a split nano second but i powered off and switched on with usb removed, i have the andy Mc screen logo for his image but nothing else is happeneing..the lcd still says boot and there is no waiting timer on screen or anything...getting tantalisingly close now

Well..solder back in the original windbond and got boot up straight away, switched off, got usb drive ready, plugged in, switched on and changed from boot to flash...yay i thought...it sat like this for over 15 minutes, so i powered off and on and im back to red light and blank lcd :( WTF !!

i have written the bootloader to the original chip from box and the one i intended to replace it with, i verified both as well with the same program i used to write them, i thought i would read both chips and save the files and use a comparison tool against the bootloader i wrote to them, the program comes back to say the files are different on both chips. do i have the right bootloader, i cant register on the zgemma site to get it from there

voltage is same but there are some pins with slightly different naming conventions, would you mind taking a look at the screen shot and see if you agree the purpose of the pinouts are the same just that abbreviationing is slightly different. I am erasing the chip so any space not used should be empty.

screenshot here

i have found some old spansion chips that i used to use for ambit modems back in the day, they are spansion S25FL016A and i am thinking i can possibly write the bootloader to this and solder it in, you think it will do the same job, i think its just a different brand chip as they are both serial eeprom i think the sapnsion one though is 16mb.

I have just written the z gemma bootloader to the spansion S25FL0168*SOIC8 and it has taken it ok, as i have to desolder the WINBOND chip out of the zgemma i think i might just solder in the spansion and see if it has worked, would i expect to see the LCD back up and ruinning, ie saying boot ?

Can you confirm I located the correct chip..I might take this one out and see what's on it as you said then erase it and reflash.

I had managed to get it back to boot but was still looping so I flashed the bootloader from zgemma site and after that I was left with red light and blank LCD. The wimdbond chip is very close to that heatsink which is in the way a bit, the heatsink seems to be glued on pretty hard.

Think i have identified the winbond chip 25Q32FVSIG and wonder if i can remove it and reflash it, not sure if they are erasable or write once, HERE IS THE DATA SHEET

THIS EBAY SELLER will sell the chip pre programmed if i send him the correct file, i have a good solder station for hot air rework, might be worth doing it myself and get a few of them and could offer it as a service to the forum for a small fee. Ithink if this way will work, for me it is going to be easier than all this faffing around not having a win xp machine.

HERE IS MY SOCKET ADAPTOR for my usb programmer....thinking this will do the job, does the bit where it says 200/209mil mean it will do that range ?..the winbond data sheet for the chip in STB states 208mil

Ah...found the winbond chip...looks very similar to an 8 legged SOIC chip i used to program for modems and solder in...i definatley have the skills to desolder it and replace...wonder if i can program it out of the PCB using my GQ 4X Programmer ??

just taken a look round the back of a win 7 machine i built for the dolly sometime ago, it is a 64bit o/s on it but it does have a serial port if any use..not seen guides using the serial port though.

i dont like to give up and will keep at it, im just hoping that its not beyond bricked and im wasting my time.

hmmmm..its certainly an option but might be easier to just get some old junk pc from somewhere and use that, i have a few mainboards knocking around, possibly even with serial ports, However, i am very close now and want to see if this virtualization works for this, i have been reading that i could use the ports over IP protocol with fitting software

so i got a win xp vm up and running with internet connection but i think i am scuppered by the fact i cant utilise the usb ports into the xp vm :(

well that guide to install a virtual machine was detailed and comprehensive, very pleased with it. A little problem now post installation, i need drivers for my USB on this laptop, i thought i would just copy them right out of the the host win10 laptop im using but the VM does not see the drives of the win10 laptop...scratching my head a bit, i dont think finding the drivers is going to be an issue, more so getting them into the VM

Quote from jenseneverest

Quote from loady

im trying to jtag a zgemma h2, i have been following this guide and am using it on a windows 10 laptop, i did try on another desktop pc but think that may also be 64 bit..i cant get bbs3 to connect either, i have even tried installing drivers for the cypress board which you apparently dont need to do as bbs3 carries the drivers.

wonder if i apply compatibility mode to it, run it as xp...im not holding my breath

i would try this:

http://www.download3k.com/arti…-or-8-using-Hyper-V-00770

I will never get rid of my old xp machine with its real serial port, it is still far too useful for old software that simply worked.

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That looks interesting..I will try this first

i have a serial port that I can add in into a desktop machine running win7

im trying to jtag a zgemma h2, i have been following this guide and am using it on a windows 10 laptop, i did try on another desktop pc but think that may also be 64 bit..i cant get bbs3 to connect either, i have even tried installing drivers for the cypress board which you apparently dont need to do as bbs3 carries the drivers.

wonder if i apply compatibility mode to it, run it as xp...im not holding my breath

Ok... I have everything in need to perform the jtag.



EZ-USB FX2LP CY7C68013A-56 USB2.0 Develope Board Module Logic Analyzer EEPROM



broadcom broadband studio 3 ,version 3.1.50315.13 which is essentially 3.1



Bcm97358.msi which is run to install it to broadband studio 3



WinbondW25Q32BV.bin which is put in the flashes directory of broadband studio, i did notice that this is a .bin file, all the other files inside folder are .xml files of 1Kb, im guessing this is just a kind of link to point the program where to download that file.



Now, the WinbondW25Q32BV.bin i got was originally named CFE_ZSH1_WinbondW25Q32BV.bin but i removed the front part as it wouldnt show up.



The problem i have is getting broadband studio 3 to connect to the zgemma, im told to plug the cypress board into the usb port on laptop and it should be picked up, i hear the noise windows makes when it picks up the device but it is shown as an unknown device, i did read that you dont need to install drivers for it as they are contained in broadband studio 3, not sure if that is correct or not. I then open broadband studio 3 and got to devices and select Bcm97358 and then to switch on the zgemma at which point it is supposed to change from disconnected to connected, this is where i am stumped, i cant get it to connect so i cant move forward from here.



I am using a windows 10 laptop which is 64bit and noticed that broadband studio is 32bit but that shouldnt be a probelm, i have also tried all of the above on a standard desktop pc running win7, so i am not sure what is causing the problem or what i can try, all the wires are connected properly and correctly. Im really banging my head against the wall now and wondering if the box is past bricked , like properly fekked.

so..has anybody else jtagged one of these and can point me to the correct cypress board and connectors please

i left it off for three hours.. Still no dice, I have eliminated any issues with USB stick, the box display is blank and have a red light. I think I need to move onto jtagging

ill get that done now and get back to you but im sure it was unplugged for some time but that was possibly when it was boot looping...