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Upgrading DSLogic Basic to Plus without EEPROM modification

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DavidA:
There seems to be an issue with AliExpress supply of MT48LC16M16A2P ICs at the moment - some feedback suggests that only the 133 MHz variant is being supplied even when the -6A 166 MHz part number is requested.

Is this an issue for upgrading the DSLogic Basic? Can it make effective use of the slower 133 MHz part? It looks like obtaining confidence in getting the exact -6A part is going to cost significantly more, if it's required.

hhyytt:
I got a new DS Logic U2B, update sdram to 256Mbit, but modify the usb vid & pid to plus(u2b is 29, change to 20) in eeprom, but it can not work.
The PCB look like this.

thm_w:

--- Quote from: hhyytt on November 29, 2019, 10:38:55 am ---I got a new DS Logic U2B, update sdram to 256Mbit, but modify the usb vid & pid to plus(u2b is 29, change to 20) in eeprom, but it can not work.
The PCB look like this.

--- End quote ---

Same here but have not received SDRAM yet. It came with 64Mbit(?) ram installed, so you removed that one and soldered the new one?
You may want to check some of those solder joints on the top under a microscope if you can.

Not working, as in after you changed the VID/PID in two places it no longer works at all or it still shows as a U2B?

RoGeorge:
I have a DSlogic and didn't use it in the last few years.  This months I tried it with the latest PulseView (Sigrok) which was already installed in Ubuntu, and DSLogic was not recognized.

Does the upgraded DSlogic works with a generic PulseView, too, or is it working only with DSView (which is nothing but a PulseView by DreamSourceLab)?

thm_w:

--- Quote from: RoGeorge on November 29, 2019, 10:51:51 pm ---I have a DSlogic and didn't use it in the last few years.  This months I tried it with the latest PulseView (Sigrok) which was already installed in Ubuntu, and DSLogic was not recognized.

Does the upgraded DSlogic works with a generic PulseView, too, or is it working only with DSView (which is nothing but a PulseView by DreamSourceLab)?

--- End quote ---

Did you follow the installation procedure yet? https://sigrok.org/wiki/DreamSourceLab_DSLogic#Firmware

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