Back again..
On the 23rd of January, during a test after the MSO modification, I blew the s3c2440 of my scope. A few days ago I managed to get the broken chip off the board. Today I had a go at soldering a new chip in place. Miracle.. It is working!!
awsome!Further testing now to find out if the LA board was damaged at the disaster of a month ago.
let's hope the best. In principle when you appy 3.3V to the LA pcb the fpga should start working, when you see
the proper ID ovr JTAG then at least this is working. The next step is lan ic, when current consumption is not more
than 100mA everything will be fine, then you can plug the LA PCB to DSO and run other tests.
In wort case the io communication between both FPGAs will not work (due the applied reversed voltage to io21 and 22),
then you will have to check which one of the FPGAs is broken (let's hope none, they much harder to solder than the SoC),
the best way is over jtag to test with boundary scan the status of FPGA pins/ports.
In best case nothing else broken, hope the best for you.
I managed to boundary scan this FPGA, the IO21 and IO22 pins are working, input and output. The FPGA of the main board I did scan as well but I am in the blind here. I don't know what to look for: the hw version 1007 is totally different from the published 1003.
There must be something wrong since the LA FPGA is not loading its program.
Just got my Hantek DSO5102B. Bought from goodluckbuy on eBay for $388.88 shipped.
Sw. version 2.06.3 (111025.0), hw.version 10070x555583e8.
The scope came with the fan installed; first impression - fan is less noisy than Tek7104 but more noisy than Tek475a. Overall - nice liitle scope.
According to what I've read so far this is 200MHz input stage, is this correct?
if someone wish to test - here another one firmware for
- Tekway DST1062B, DST1102B, DST1202B
- Hantek DSO5062B, DSO5102B, DSO5202B
- Voltcraft DSO3062C, DSO1062D
- PCE DSOs: PCE-DSO5062B, PCE-DSO5102B, PCE-DSO5202B
http://www.mikrocontroller.net/attachment/170890/dst1kb_2.06.3_15202b_fact_130221.0_.zip
There must be something wrong since the LA FPGA is not loading its program.
there is as well JTAG port on LA PCB, use it (the best would be to test while the LA PCB is NOT mounted in DSO).
I've attached small design, load it over jtag, it should produce 25MHz clock on FPGA pin1 (the clock for LAN IC)
I learned here that while pin to pin boundary scan is working the chip core is not guaranteed to be allright. The LA-FPGA was not loading the configuration file over JTAG. The shorted nCONFIG pin I found earlier made me decide to change the LA-FPGA.
Another soldering miracle was performed. With the new FPGA the start up log file shows the config file is loaded.
However I had to overcome the pinnumber issue with the cable connector for the frontpanel connection of the LA. In the schematic the odd numbered pins are GND. The connector on the board is wired even pins to GND. Looks like the pin connector was on the bottom side during the board design stage. The silkscreen marking "1" is at the position of pin 2 now.
When I sorted this out I made another adapter and now the Logic Analyzer is working, Finally!
The DM9000 chip most probably also not survived the accident because I can trace no network activity. The LnOE net is also routed to pin 1 of the DM9000 and this net was relatively negative 1.7 V. during the accident. Another soldering job; but I'll have to find a new DM9000 chip first.
i will send you new chip
Somebody have Hantek DSO1202B ?
Please read "disp" file from the root directory and place it here...