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Took a reasonable gamble that the CHRN reported is from internal registers, not from the last-found header.

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This commit is contained in:
Thomas Harte 2017-08-06 19:57:34 -04:00
parent b5ec1f42d5
commit 01efb645cb
2 changed files with 16 additions and 6 deletions
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20
Components/8272/i8272.cpp
View File

@ -214,14 +214,18 @@ void i8272::posit_event(int event_type) {
if(!dma_mode_) main_status_ |= StatusNDM;
set_drive(drives_[command_[1]&3].drive);
set_is_double_density(command_[0] & 0x40);
cylinder_ = command_[2];
head_ = command_[3];
sector_ = command_[4];
size_ = command_[5];
index_hole_limit_ = 2;
find_next_sector:
FIND_HEADER();
if(!index_hole_limit_) goto read_data_not_found;
READ_HEADER();
printf("Comparing with %02x\n", header_[2]);
if(header_[2] != command_[4]) goto find_next_sector;
printf("Comparing with %02x\n", sector_);
if(header_[2] != sector_) goto find_next_sector;
printf("Unimplemented!!\n");
goto wait_for_command;
@ -233,10 +237,14 @@ void i8272::posit_event(int event_type) {
status_[0] = (status_[0] & ~0xc0) | 0x40;
read_data_end:
result_.push_back(header_[3]);
result_.push_back(header_[2]);
result_.push_back(header_[1]);
result_.push_back(header_[0]);
// result_.push_back(header_[3]);
// result_.push_back(header_[2]);
// result_.push_back(header_[1]);
// result_.push_back(header_[0]);
result_.push_back(size_);
result_.push_back(sector_);
result_.push_back(head_);
result_.push_back(cylinder_);
result_.push_back(status_[2]);
result_.push_back(status_[1]);

2
Components/8272/i8272.hpp
View File

@ -71,6 +71,8 @@ class i8272: public Storage::Disk::MFMController {
uint8_t header_[6];
int distance_into_header_;
int index_hole_limit_;
uint8_t cylinder_, head_, sector_, size_;
};
}