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Added read/write escape clauses if faced with a read-only disk.
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@ -302,8 +302,6 @@ void i8272::posit_event(int event_type) {
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read_write_find_header:
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read_write_find_header:
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// Establishes the drive and head being addressed, and whether in double density mode; populates the internal
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// Establishes the drive and head being addressed, and whether in double density mode; populates the internal
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// cylinder, head, sector and size registers from the command stream.
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// cylinder, head, sector and size registers from the command stream.
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if(!dma_mode_) SetNonDMAExecution();
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SET_DRIVE_HEAD_MFM();
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LOAD_HEAD();
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LOAD_HEAD();
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cylinder_ = command_[2];
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cylinder_ = command_[2];
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head_ = command_[3];
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head_ = command_[3];
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@ -347,6 +345,8 @@ void i8272::posit_event(int event_type) {
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// Performs the read data or read deleted data command.
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// Performs the read data or read deleted data command.
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read_data:
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read_data:
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printf("Read data [%02x %02x %02x %02x ... %02x]\n", command_[2], command_[3], command_[4], command_[5], command_[8]);
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printf("Read data [%02x %02x %02x %02x ... %02x]\n", command_[2], command_[3], command_[4], command_[5], command_[8]);
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if(!dma_mode_) SetNonDMAExecution();
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SET_DRIVE_HEAD_MFM();
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read_next_data:
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read_next_data:
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goto read_write_find_header;
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goto read_write_find_header;
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@ -413,6 +413,13 @@ void i8272::posit_event(int event_type) {
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write_data:
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write_data:
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printf("Write [deleted] data\n");
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printf("Write [deleted] data\n");
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if(!dma_mode_) SetNonDMAExecution();
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SET_DRIVE_HEAD_MFM();
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if(drives_[active_drive_].drive->get_is_read_only()) {
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SetNotWriteable();
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goto abort_read_write;
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}
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write_next_data:
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write_next_data:
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goto read_write_find_header;
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goto read_write_find_header;
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@ -512,6 +519,11 @@ void i8272::posit_event(int event_type) {
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printf("Format track\n");
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printf("Format track\n");
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if(!dma_mode_) SetNonDMAExecution();
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if(!dma_mode_) SetNonDMAExecution();
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SET_DRIVE_HEAD_MFM();
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SET_DRIVE_HEAD_MFM();
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if(drives_[active_drive_].drive->get_is_read_only()) {
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SetNotWriteable();
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goto abort_read_write;
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}
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LOAD_HEAD();
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LOAD_HEAD();
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// Wait for the index hole.
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// Wait for the index hole.
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