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Added some even more verbose logging; slightly simplified write loop logic, and decided it's definitely write_byte that's responsible for CRC generator feeding.

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This commit is contained in:
Thomas Harte 2016-12-28 21:24:19 -05:00
parent ce814c9e99
commit e4000bd060
1 changed files with 9 additions and 11 deletions
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20
Components/1770/1770.cpp
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@ -556,6 +556,7 @@ void WD1770::posit_event(Event new_event_type)
printf("Found %d/%d\n", header_[0], header_[2]);
if(crc_generator_.get_value())
{
printf("CRC error; back to searching\n");
update_status([] (Status &status) {
status.crc_error = true;
});
@ -615,6 +616,7 @@ void WD1770::posit_event(Event new_event_type)
{
if(crc_generator_.get_value())
{
printf("CRC error; terminating\n");
update_status([this] (Status &status) {
status.crc_error = true;
});
@ -684,17 +686,17 @@ void WD1770::posit_event(Event new_event_type)
natural expectations and the way that emulated machines responded, I believe that to be a
documentation error.
*/
crc_generator_.add(data_);
write_byte(data_);
distance_into_section_++;
if(distance_into_section_ < 128 << header_[3])
if(distance_into_section_ == 128 << header_[3])
{
update_status([] (Status &status) {
status.data_request = true;
});
goto type2_write_crc;
}
WAIT_FOR_EVENT(Event::DataWritten);
update_status([] (Status &status) {
status.data_request = true;
});
WAIT_FOR_EVENT(Event::DataWritten);
if(status_.data_request)
{
update_status([] (Status &status) {
@ -703,17 +705,13 @@ void WD1770::posit_event(Event new_event_type)
goto wait_for_command;
}
if(distance_into_section_ == 128 << header_[3])
{
goto type2_write_crc;
}
goto type2_write_loop;
type2_write_crc:
{
uint16_t crc = crc_generator_.get_value();
write_byte(crc >> 8);
write_byte((crc & 0xff));
write_byte(crc & 0xff);
}
write_byte(0xff);
WAIT_FOR_EVENT(Event::DataWritten);