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superdrive: One exit path for status.

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This commit is contained in:
joevt 2024-05-01 03:29:06 -07:00 committed by dingusdev
parent a62954d1a7
commit f813aed1ce
1 changed files with 31 additions and 15 deletions
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46
devices/floppy/superdrive.cpp
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@ -117,40 +117,56 @@ void MacSuperDrive::set_motor_stat(uint8_t new_motor_stat)
uint8_t MacSuperDrive::status(uint8_t addr)
{
LOG_F(9, "%s: status request, addr = 0x%X", this->get_name().c_str(), addr);
uint8_t value;
switch(addr) {
case StatusAddr::Step_Status:
return 1; // not sure what should be returned here
value = 1; // not sure what should be returned here
break;
case StatusAddr::Motor_Status:
return this->motor_stat ^ 1; // reverse logic
value = this->motor_stat ^ 1; // reverse logic
break;
case StatusAddr::Eject_Latch:
return this->eject_latch;
value = this->eject_latch;
break;
case StatusAddr::Select_Head_0:
return this->cur_head = 0;
value = this->cur_head = 0;
break;
case StatusAddr::MFM_Support:
return 1; // Superdrive does support MFM encoding scheme
value = 1; // Superdrive does support MFM encoding scheme
break;
case StatusAddr::Double_Sided:
return 1; // yes, Superdrive is double sided
value = 1; // yes, Superdrive is double sided
break;
case StatusAddr::Drive_Exists:
return 0; // tell the world I'm here
value = 0; // tell the world I'm here
break;
case StatusAddr::Disk_In_Drive:
return this->has_disk ^ 1; // reverse logic (active low)!
value = this->has_disk ^ 1; // reverse logic (active low)!
break;
case StatusAddr::Write_Protect:
return this->wr_protect ^ 1; // reverse logic
value = this->wr_protect ^ 1; // reverse logic
break;
case StatusAddr::Track_Zero:
return this->track_zero ^ 1; // reverse logic
value = this->track_zero ^ 1; // reverse logic
break;
case StatusAddr::Select_Head_1:
return this->cur_head = 1;
value = this->cur_head = 1;
break;
case StatusAddr::Drive_Mode:
return this->drive_mode;
value = this->drive_mode;
break;
case StatusAddr::Drive_Ready:
return this->is_ready ^ 1; // reverse logic
value = this->is_ready ^ 1; // reverse logic
break;
case StatusAddr::Media_Kind:
return this->media_kind ^ 1; // reverse logic!
value = this->media_kind ^ 1; // reverse logic!
break;
default:
LOG_F(WARNING, "%s: unimplemented status request, addr=0x%X", this->get_name().c_str(), addr);
return 0;
value = 0;
}
return value;
}
int MacSuperDrive::insert_disk(std::string& img_path, int write_flag = 0)