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Made a first attempt to return sector contents.

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This commit is contained in:
Thomas Harte 2017-08-06 20:40:29 -04:00
parent e4b405fd3d
commit 600445d90a
2 changed files with 24 additions and 19 deletions
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41
Components/8272/i8272.cpp
View File

@ -119,13 +119,17 @@ void i8272::set_disk(std::shared_ptr<Storage::Disk::Disk> disk, int drive) {
if(index_hole_limit_) goto CONCAT(find_header, __LINE__); \
CONCAT(header_found, __LINE__): 0;\
#define FIND_DATA() \
CONCAT(find_data, __LINE__): WAIT_FOR_EVENT((int)Event::Token | (int)Event::IndexHole); \
if(event_type == (int)Event::Token && get_latest_token().type != Token::Data) goto CONCAT(find_data, __LINE__);
#define READ_HEADER() \
distance_into_header_ = 0; \
distance_into_section_ = 0; \
set_data_mode(Reading); \
CONCAT(read_header, __LINE__): WAIT_FOR_EVENT(Event::Token); \
header_[distance_into_header_] = get_latest_token().byte_value; \
distance_into_header_++; \
if(distance_into_header_ != 7) goto CONCAT(read_header, __LINE__); \
header_[distance_into_section_] = get_latest_token().byte_value; \
distance_into_section_++; \
if(distance_into_section_ != 7) goto CONCAT(read_header, __LINE__); \
set_data_mode(Scanning);
#define SET_DRIVE_HEAD_MFM() \
@ -230,26 +234,27 @@ void i8272::posit_event(int event_type) {
printf("Comparing with %02x\n", header_[2]);
if(header_[2] != sector_) goto find_next_sector;
printf("Unimplemented!!\n");
goto wait_for_command;
FIND_DATA();
distance_into_section_ = 0;
set_data_mode(Reading);
get_byte:
WAIT_FOR_EVENT(Event::Token);
result_stack_.push_back(get_latest_token().byte_value);
distance_into_section_++;
main_status_ |= StatusRQM | StatusDIO;
WAIT_FOR_EVENT(Event8272::ResultEmpty);
if(distance_into_section_ < (128 << size_)) goto get_byte;
set_data_mode(Scanning);
goto return_st012chrn;
read_data_not_found:
printf("Not found\n");
status_[1] |= 0x4;
status_[0] = 0x40; // (status_[0] & ~0xc0) |
read_data_end:
result_stack_.push_back(command_[5]);
result_stack_.push_back(command_[4]);
result_stack_.push_back(command_[3]);
result_stack_.push_back(command_[2]);
result_stack_.push_back(status_[2]);
result_stack_.push_back(status_[1]);
result_stack_.push_back(status_[0]);
goto post_result;
goto return_st012chrn;
read_deleted_data:
printf("Read deleted data unimplemented!!\n");

2
Components/8272/i8272.hpp
View File

@ -69,7 +69,7 @@ class i8272: public Storage::Disk::MFMController {
} drives_[4];
uint8_t header_[6];
int distance_into_header_;
int distance_into_section_;
int index_hole_limit_;
uint8_t cylinder_, head_, sector_, size_;