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This commit is contained in:
David Given
2021-01-05 01:36:10 +01:00
parent cb4ee0fd74 884edfd497
commit 41f2da71e4
5 changed files with 66 additions and 59 deletions
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11
arch/macintosh/encoder.cc
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@@ -14,7 +14,12 @@ FlagGroup macintoshEncoderFlags;
static DoubleFlag postIndexGapUs(
{ "--post-index-gap-us" },
"Post-index gap before first sector header (microseconds).",
500);
0);
static DoubleFlag clockCompensation(
{ "--clock-compensation-factor" },
"Scale the output clock by this much.",
.9724);
static bool lastBit;
@@ -211,7 +216,7 @@ std::unique_ptr<Fluxmap> MacintoshEncoder::encode(
if ((physicalTrack < 0) || (physicalTrack >= MAC_TRACKS_PER_DISK))
return std::unique_ptr<Fluxmap>();
double clockRateUs = clockRateUsForTrack(physicalTrack);
double clockRateUs = clockRateUsForTrack(physicalTrack) * clockCompensation;
int bitsPerRevolution = 200000.0 / clockRateUs;
std::vector<bool> bits(bitsPerRevolution);
unsigned cursor = 0;
@@ -228,7 +233,7 @@ std::unique_ptr<Fluxmap> MacintoshEncoder::encode(
if (cursor >= bits.size())
Error() << fmt::format("track data overrun by {} bits", cursor - bits.size());
//fillBitmapTo(bits, cursor, bits.size(), { true, false });
fillBitmapTo(bits, cursor, bits.size(), { true, false });
std::unique_ptr<Fluxmap> fluxmap(new Fluxmap);
fluxmap->appendBits(bits, clockRateUs*1e3);