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Attempted to give the PLL a litte extra leeway, and fixed PCMTrack length test.

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This commit is contained in:
Thomas Harte 2016-07-29 18:52:50 -04:00
parent 8f62211f5e
commit fead524eb5
2 changed files with 7 additions and 4 deletions
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7
Storage/Disk/DiskDrive.cpp
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@ -11,11 +11,11 @@
using namespace Storage;
DiskDrive::DiskDrive(unsigned int clock_rate, unsigned int revolutions_per_minute) :
_clock_rate(clock_rate),
_clock_rate(clock_rate * 16),
_revolutions_per_minute(revolutions_per_minute),
_head_position(0),
TimedEventLoop(clock_rate)
TimedEventLoop(clock_rate * 16)
{}
void DiskDrive::set_expected_bit_length(Time bit_length)
@ -63,6 +63,8 @@ void DiskDrive::run_for_cycles(int number_of_cycles)
if(has_disk())
{
_cycles_since_index_hole += (unsigned int)number_of_cycles;
number_of_cycles *= 16;
_pll->run_for_cycles(number_of_cycles);
TimedEventLoop::run_for_cycles(number_of_cycles);
}
@ -100,6 +102,7 @@ void DiskDrive::process_next_event()
case Track::Event::IndexHole:
_cycles_since_index_hole = 0;
process_index_hole();
printf("\n");
break;
}
get_next_event();

4
Storage/Disk/PCMTrack.cpp
View File

@ -33,7 +33,7 @@ PCMTrack::Event PCMTrack::get_next_event()
{
unsigned int clock_multiplier = _track_clock_rate / _segments[_segment_pointer].length_of_a_bit.clock_rate;
const uint8_t *segment_data = _segments[_segment_pointer].data.get();
while(_bit_pointer < _segments[_segment_pointer].length_of_a_bit.length)
while(_bit_pointer < _segments[_segment_pointer].number_of_bits)
{
// for timing simplicity, bits are modelled as happening at the end of their window
// TODO: should I account for the converse bit ordering? Or can I assume MSB first?
@ -66,7 +66,7 @@ void PCMTrack::fix_length()
_track_clock_rate = NumberTheory::least_common_multiple(_track_clock_rate, _segments[c].length_of_a_bit.clock_rate);
}
// therby determine the total length, storing it to next_event as the track-total divisor
// thereby determine the total length, storing it to next_event as the track-total divisor
_next_event.length.clock_rate = 0;
for(size_t c = 0; c < _segments.size(); c++)
{