Lines Matching +full:per +full:- +full:device

35 .Cd device fdc
38 .Pa /boot/device.hints :
51 .Ss Device Usage
54 either FM (single-density) or MFM (double or high-density) recording
60 driver can currently handle up to two drives per controller (or four
73 using the per-controller flags value of
76 By default, this driver creates a single device node
80 For historical reasons, device nodes that use a trailing UFS-style
86 the main device node.
88 Accessing the main device node will attempt to autodetect the density
89 of the available medium for multi-density devices.
92 high-density 3.5 inch standard floppy drive.
96 for the device after inserting the medium.
101 this can be overridden using the per-drive device flags value of
107 When trying to use a floppy device with special-density media, other
108 device nodes can be created, of the form
114 is a number between one and four digits describing the device density.
115 Up to 15 additional subdevices per drive can be created that way.
130 Drive types are configured using the lower four bits of the per-drive
131 device flags.
133 .Bl -tag -width 2n -offset indent
135 5.25 inch double-density device with 40 cylinders (360 KB native
138 5.25 inch high-density device with 80 cylinders (1200 KB native
141 3.5 inch double-density device with 80 cylinders (720 KB native
144 3.5 inch high-density device with 80 cylinders (1440 KB native
147 3.5 inch extra-density device with 80 cylinders (2880 KB native
171 per-drive device flags value of
186 When opening the device
189 flag set, the device is opened in a normal way, which would cause the
190 main device nodes to perform automatic media density selection, and which
196 When opening the device with
198 set, automatic media density selection will be bypassed, and the device
199 remains in a half-opened state.
205 access to the device without the requirement to have an accessible
213 Operations that are not allowed on the half-opened
220 .Bl -tag -width ".Dv FD_READID"
228 Returns the current density definition record for the selected device.
232 Adjusts the density definition of the selected device.
236 For the fixed-density subdevices (1 through 15 per drive), this
239 the auto-selecting subdevice 0, the operation is temporarily allowed
243 will require to open the device using
252 .Bl -tag -width ".Dv FDOPT_NOERRLOG"
272 Device performs automatic density selection.
274 this one is read-only.
277 Set device options, see above for their meaning.
283 Clear the internal low-level error counter.
284 Normally, controller-level
311 This type is the same as being used in the per-drive configuration
315 .Bl -tag -width "debug.fdc.debugflags"
318 .Bl -tag -width "0x40"
320 Dump device registers on reset.
338 non-zero return from a thread worker operation.
352 For enhanced controllers, allows a non-default FIFO
357 Specification byte one (step-rate + head unload).
361 Specification byte two (head load time + no-dma).
362 The default head load time is 16 ms, and no-dma is 0
367 / hz seconds. The default value is set during device attach.
370 .Bl -tag -width ".Pa /dev/fd*" -compact
372 floppy disk device nodes
384 .An -nosplit