From 54ddae2ac9869020da8c3497c044e6ec3534c75d Mon Sep 17 00:00:00 2001 From: kstailey Date: Tue, 11 Mar 1997 15:46:01 +0000 Subject: [PATCH] more about disconnect --- sys/scsi/README.ss | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/sys/scsi/README.ss b/sys/scsi/README.ss index 9634c9ae39f..6aa9902314c 100644 --- a/sys/scsi/README.ss +++ b/sys/scsi/README.ss @@ -1,4 +1,4 @@ -$OpenBSD: README.ss,v 1.5 1997/03/11 03:40:49 kstailey Exp $ +$OpenBSD: README.ss,v 1.6 1997/03/11 15:46:01 kstailey Exp $ If you think SCSI tape drives are quirky you haven't seen anything. @@ -34,7 +34,14 @@ common code for ssread() in ss.c could be used. Other Considerations SCSI disconnect is missing from many scanners. Sucks huh? A slow -peripheral that also monopolizes the bus. +peripheral that also monopolizes the bus. This means that if your +scanner does not support disconnect you need a second SCSI controller +for it since access of the controller by any other devices will be +locked out while you are scanning. Scanners that do this include +MUSTEK flatbed scanners MFS 06000CX and MFS 12000CX, UMAX UC-630 & +UG-630. Over time, as multi-tasking becomes more important to +commoners^H^H^H^H^H^H^H^H^HWindoze users, scanner vendors often supply +new ROMs that can do disconnect. The image data from the scanner driver is currently supposed to resemble headerless PBM "rawbits". Depending on this is probably a bad idea -- 2.20.1