Error divide by zero on Cyclone V Starter Board

[everestultimate]

My config.tcl
set url "http://XX.XX.XX.XX:8332"
set userpass "myuser.myworker:mypass"

I downloaded mining_proxy.exe from https://github.com/slush0/stratum-mining-proxy. then run cmd.exe
mining_proxy -o litecoinpool.org -p 3333

I get this error when i run mine.bat

[asovetov]

same error =(

[tgbilder]

Me too. This miner needs a Tcl stratum support. I think it is possible with pure Tcl.

[burntCherryCake]

This error seems like it's not heavily device dependent. I've tracked down where in the tcl script this is happening, but don't know the expected behavior of the variables. I was reconfiguring this project for a Cyclone II (just for fun) when I hit this.

The error happens when mine.tcl calls push_work_to_fpga in jtag_command.tcl. The case I hit was where the target threshold received from the mining pool (Nov 13, 2022) is

$work(target) -> 0000000000000000000000000000000000000000000000000000ffff00000000
but then the script does this to the target:
set target [string range [reverseHex $work(target)] 0 7]
which results in
$target -> 00000000
because the previous line essentially grabs the first 8 characters of the $work(target) value.

Then, in the block of code quoted at runtime, this happens
# Only write target the first time (and if it subsequently changes) if { $prevtarget != $target } { write_instance "TARG" $target set diff [expr 0x0000ffff / 0x$target ] puts "new target $target diff $diff" }

which attempts to divide 0x0000ffff by 0x00000000, which is indeed, a divide by 0.

[burntCherryCake]

By the way, getwork <-> stratum conversion seems to be doable via a proxy (https://github.com/slush0/stratum-mining-proxy).
The Proxy seems to work, I don't get errors when connecting to a pool, and mine.bat seems to be getting some non-garbage values.