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<mkdir>
hello
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<mkdir>
anyone able to flash icestick using iceprog
<mkdir>
on newer Macs
<mkdir>
I'm having driver issues
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<kc8apf>
I thought icestick had an FTDI. macOS has included an FTDI driver for 5+ years
<Ultrasauce>
i have an icestick that ate its ftdi firmware, could be a similar issue
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<mkdir>
whitequark wya
<mkdir>
whitequark wya
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<davidc__>
Ultrasauce: ... there isn't FTDI 'firmware' per-se
<davidc__>
(for the USB->multiprotocol chips)
<davidc__>
there is an EEPROM with VID/PID/descriptors/pin configurations
<Ultrasauce>
oh thought it was more than just a config. either way something magical happened to one of mine
<azonenberg>
Ultrasauce: either the eeprom got corrupted by accident, or the chip is a counterfeit and got bricked by the ftdi drivers
<azonenberg>
the counterfeits may also have actual firmware, IDK
<azonenberg>
But i've decapped almost all of the actual FTDI usb-whatever chips and they're just a pile of gates and a small sram IP for the fifo
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<daveshah>
Think the USB 3.0 FTDI parts (FT601Q) etc have some kind of firmware, almost certainly in mask ROM
<daveshah>
Seen some references in docs to firmware and firmware versions
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<adamgreig>
does nextpnr-ice40 route using the lut carry in/out? my critical path is entirely a long carry chain for an adder that i'd like to make faster...
<daveshah>
yes, yosys maps the carry chain
<daveshah>
(and nextpnr can pnr it)
<adamgreig>
ah, so much for that hope
<adamgreig>
iirc yosys doesn't really do retiming if i tried to pipeline the adder?
<daveshah>
No, it can't retime into carry chains
<daveshah>
at least at the moment
<adamgreig>
fe
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<azonenberg>
I havent looked at a 3.x yet
<azonenberg>
the 1.x and 2.x are all just gateware
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