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base repository: GlasgowEmbedded/glasgow
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head repository: GlasgowEmbedded/glasgow
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compare: b645b7cd1f09
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  • 1 commit
  • 1 file changed
  • 1 contributor

Commits on Jun 15, 2020

  1. applet.memory.floppy: tune PLL parameters. 

    Seems to result in much better data recovery (better than my USB
floppy drive).
    @whitequark
    whitequark committed Jun 15, 2020
    Copy the full SHA
    b645b7c View commit details
Showing with 1 addition and 1 deletion.
  1. +1 −1 software/glasgow/applet/memory/floppy/mfm.py
2 changes: 1 addition & 1 deletion software/glasgow/applet/memory/floppy/mfm.py
View file
Original file line number Diff line number Diff line change
@@ -40,7 +40,7 @@ def domains(self, bitstream):

def lock(self, bitstream, *, debug=False,
nco_init_period=0, nco_min_period=16, nco_max_period=256,
nco_frac_bits=6, pll_kp_exp=5, pll_gph_exp=1):
nco_frac_bits=8, pll_kp_exp=2, pll_gph_exp=1):
nco_period = nco_init_period << nco_frac_bits
nco_phase = 0
nco_step = 1 << nco_frac_bits