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Sought to implement the verify step of type 1 commands.

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This commit is contained in:
Thomas Harte 2016-09-25 09:54:49 -04:00
parent 67b54269c9
commit a538b45213
1 changed files with 47 additions and 23 deletions
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70
Components/1770/1770.cpp
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@ -163,6 +163,16 @@ void WD1770::process_index_hole()
#define BEGIN_SECTION() switch(resume_point_) { default:
#define END_SECTION() 0; }
#define READ_ID() \
if(new_event_type == Event::Token) \
{ \
if(!distance_into_section_ && latest_token_.type == Token::ID) distance_into_section_++; \
else if(distance_into_section_ && distance_into_section_ < 7 && latest_token_.type == Token::Byte) \
{ \
header[distance_into_section_ - 1] = latest_token_.byte_value; \
distance_into_section_++; \
} \
}
void WD1770::posit_event(Event new_event_type)
{
@ -254,7 +264,31 @@ void WD1770::posit_event(Event new_event_type)
goto wait_for_command;
}
printf("!!!TODO: verify a type 1!!!\n");
index_hole_count_ = 0;
verify_read_data:
WAIT_FOR_EVENT(Event::IndexHole | Event::Token);
READ_ID();
if(index_hole_count_ == 6)
{
set_interrupt_request(true);
status_ |= Flag::SeekError;
goto wait_for_command;
}
if(distance_into_section_ == 7)
{
// TODO: CRC check
if(header[0] == track_)
{
status_ &= ~Flag::CRCError;
set_interrupt_request(true);
goto wait_for_command;
}
distance_into_section_ = 0;
}
goto verify_read_data;
/*
@ -290,33 +324,23 @@ void WD1770::posit_event(Event new_event_type)
type2_get_header:
WAIT_FOR_EVENT(Event::IndexHole | Event::Token);
if(new_event_type == Event::Token)
{
if(!distance_into_section_ && latest_token_.type == Token::ID) distance_into_section_++;
else if(distance_into_section_ && latest_token_.type == Token::Byte)
{
header[distance_into_section_ - 1] = latest_token_.byte_value;
distance_into_section_++;
if(distance_into_section_ == 6)
{
if(header[0] == track_ && header[2] == sector_)
{
// TODO: test CRC
goto type2_read_or_write_data;
}
else
{
distance_into_section_ = 0;
}
}
}
}
else if(index_hole_count_ == 5)
READ_ID();
if(index_hole_count_ == 5)
{
set_interrupt_request(true);
status_ |= Flag::RecordNotFound;
goto wait_for_command;
}
if(distance_into_section_ == 7)
{
if(header[0] == track_ && header[2] == sector_)
{
// TODO: test CRC
goto type2_read_or_write_data;
}
distance_into_section_ = 0;
}
goto type2_get_header;