CGMiner 3.7.2 with GridSeed GC3355 support
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ADL_SDK Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
bitstreams Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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m4 Add GridSeed support. Mar 5, 2014
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INSTALL Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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Makefile.am Add GridSeed support. Mar 5, 2014
Makefile.in Add GridSeed support. Mar 5, 2014
NEWS Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
README Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
README.md Turn off per-chip stats by default. Mar 7, 2014
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api-example.c Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
api-example.php Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
api.c API modified to show hashrates in KHS Mar 26, 2014
arg-nonnull.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
bench_block.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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c++defs.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
cgminer.c fixed freq error when compiling May 8, 2014
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config.sub Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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configure.ac Add GridSeed support. Mar 5, 2014
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driver-gridseed.h GRIDSEED_MAX_CHIPS 256 Apr 17, 2014
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driver-hashfast.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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fpgautils.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
hexdump.c Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
hf_protocol.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
install-sh Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
linux-usb-cgminer Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
logging.c Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
logging.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
ltmain.sh Add GridSeed support. Mar 5, 2014
miner.h fixed freq error when compiling May 8, 2014
miner.php Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
missing Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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scrypt.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
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sha2.c Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
sha2.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
usbutils.c Lower GridSeed USB timoeut on Linux. Mar 7, 2014
usbutils.h Add GridSeed support. Mar 5, 2014
uthash.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
util.c fixed poolname error when compiling May 8, 2014
util.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
warn-on-use.h Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014
windows-build.txt Import of cgminer-3.7.2.tar.bz2. Feb 21, 2014

README.md

cgminer-gc3355

CGMiner 3.72 with GridSeed GC3355 support

./configure --enable-scrypt --enable-gridseed

GC3355-specific options can be specified via --gridseed-options or "gridseed-options" in the configuration file as a comma-separated list of sub-options:

  • baud - miner baud rate (default 115200)
  • freq - a choice of 250/400/450/500/550/600/650/700/750/800/850/900/950/1000
  • pll_r, pll_f, pll_od - fine-grained frequency tuning; see below
  • chips - number of chips per device (default 5)
  • per_chip_stats - print per-chip nonce generations and hardware failures

If pll_r/pll_f/pll_od are specified, freq is ignored, and calculated as follows:

  • Fin = 25
  • Fref = int(Fin / (pll_r + 1))
  • Fvco = int(Fref * (pll_f + 1))
  • Fout = int(Fvco / (1 << pll_od))
  • freq = Fout

This version of cgminer turns off all BTC cores so that power usage is low. On a 5-chip USB miner, power usage is around 10 W. GPUs are also supported.