fluxengine/src/formats/ibm.textpb

comment: 'Generic PC 3.5"/5.25" family'

image_reader {
	filename: "ibm.img"
	type: IMG
}

image_writer {
	filename: "ibm.img"
	type: IMG
}

decoder {
	ibm {}
}

filesystem {
	type: FATFS
}

tpi: 96

option_group {
	comment: "Format variant"

	option {
		name: "auto"
		comment: 'try to autodetect the format (unreliable)'
		set_by_default: true

		config {}
	}

	option {
		name: "160"
		comment: '160kB 5.25" 40-track 8-sector SSDD'

		config {
			layout {
				tracks: 40
				sides: 1
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 8
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 167
						target_clock_period_us: 3.333
					}
				}
			}

			tpi: 48
		}
	}

	option {
		name: "180"
		comment: '180kB 5.25" 40-track 9-sector SSDD'

		config {
			layout {
				tracks: 40
				sides: 1
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 9
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 167
						target_clock_period_us: 3.333
					}
				}
			}

			tpi: 48
		}
	}

	option {
		name: "320"
		comment: '320kB 5.25" 40-track 8-sector DSDD'

		config {
			layout {
				tracks: 40
				sides: 2
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 8
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 167
						target_clock_period_us: 3.333
					}
				}
			}

			tpi: 48
		}
	}

	option {
		name: "360"
		comment: '360kB 5.25" 40-track 9-sector DSDD'

		config {
			layout {
				tracks: 40
				sides: 2
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 9
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 167
						target_clock_period_us: 3.333
					}
				}
			}

			tpi: 48
		}
	}

	option {
		name: "720"
		comment: '720kB 5.25"/3.5" 80-track 9-sector DSDD'

		config {
			layout {
				tracks: 80
				sides: 2
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 9
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						# This also works on 166ms drives (producing a physical clock of
						# 3.33us).
						target_rotational_period_ms: 200
						target_clock_period_us: 4
					}
				}
			}
		}
	}

	option {
		name: "1200"
		comment: '1200kB 5.25" 80-track 15-sector DSHD'

		config {
			layout {
				tracks: 80
				sides: 2
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 15
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 167
						target_clock_period_us: 2
					}
				}
			}
		}
	}

	option {
		name: "1232"
		comment: '1232kB 5.25"/3.5" 77-track 8-sector DSHD'

		config {
			layout {
				tracks: 77
				sides: 2
				layoutdata {
					sector_size: 1024
					physical {
						start_sector: 1
						count: 8
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 167
						target_clock_period_us: 2
					}
				}
			}
		}
	}

	option {
		name: "1440"
		comment: '1440kB 3.5" 80-track 18-sector DSHD'

		config {
			layout {
				tracks: 80
				sides: 2
				layoutdata {
					sector_size: 512
					physical {
						start_sector: 1
						count: 18
					}
				}
			}

			encoder {
				ibm {
					trackdata {
						target_rotational_period_ms: 200
						target_clock_period_us: 2
					}
				}
			}
		}
	}
}