diff options
| -rw-r--r-- | sys/scsi/README.ss | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/scsi/README.ss b/sys/scsi/README.ss index c582d02799a..dc8da5bdb8b 100644 --- a/sys/scsi/README.ss +++ b/sys/scsi/README.ss @@ -1,4 +1,4 @@ -$OpenBSD: README.ss,v 1.3 1997/03/10 02:28:46 kstailey Exp $ +$OpenBSD: README.ss,v 1.4 1997/03/11 02:34:25 kstailey Exp $ If you think SCSI tape drives are quirky you haven't seen anything. @@ -42,3 +42,16 @@ to describe the kind of data that is available. Halftone control of scanners is missing, save for one pre-defined selection. This also should be in the ioctl() interface. + +Basic workflow for scanning + +1. Open driver. +2. ioctl to get parameters (this fills in default values and generally makes + step 3 easier.) +3. Modify parameters. +4. ioctl to set parameters. +5. ioctl to get data size (same as step 2, but values will be different if + the image size, resolution, or image data type was set.) +6. Read data based on size from scanner retrieved in step 5 (the driver + delivers an EOF if you overread.) +7. Close driver (or use ioctl to reset it so you can scan again.) |