diff --git a/src/raspberrypi/rascsi.1 b/src/raspberrypi/rascsi.1
index b29a702..13f20f8 100644
--- a/src/raspberrypi/rascsi.1
+++ b/src/raspberrypi/rascsi.1
@@ -3,12 +3,60 @@
 rascsi \- Emulates SCSI devices using the Raspberry Pi GPIO pins
 .SH SYNOPSIS
 .B rascsi
+[\fB\-IDn\fR \fIfile\fR]...
 [\fB\-HDn\fR \fIfile\fR]...
 .SH DESCRIPTION
 .B rascsi
 Emulates SCSI devices using the Raspberry Pi GPIO pins.
+.PP
+In the arguments to RaSCSI, one or more SCSI (-IDn) or SASI (-HDn) devices can be specified.
+The number (n) after the ID or HD idnetifier specifies the ID number for that device.
+For SCSI: The ID is limited from 0-7. However, typically SCSI ID 7 is reserved for the "initiator" (the host computer).Note that SASI is considered rare and only used on very early Sharp X68000 computers.
+.PP
+RaSCSI will determin the type of device based upon the file extension of the FILE argument.
+    hdf: SASI Hard Disk image (XM6 SASI HD image - typically only used with X68000)
+    hds: SCSI Hard Disk image (XM6 SCSI HD image - typically only used with X68000)
+    hdn: SCSI Hard Disk image (NEC GENUINE)
+    hdi: SCSI Hard Disk image (Anex86 HD image)
+    nhd: SCSI Hard Disk image (T98Next HD image)
+    hda: SCSI Hard Disk image (APPLE GENUINE - typically used with Mac SCSI emulation)
+    mos: SCSI Magneto-optical image (XM6 SCSI MO image - typically only used with X68000)
+    iso: SCSI CD-ROM image (ISO 9660 image)
+  
+For example, if you want to specify an Apple-compatible HD image on ID 0, you can use the following command:
+    sudo rascsi -ID0 /path/to/drive/hdimage.hda
+
+Once RaSCSI starts, it will open a socket (port 6868) to allow external management commands.
+If another process is using port 6868, RaSCSI will terminate, since it is likely another instance of RaSCSI.
+Once RaSCSI has initialized, the rasctl utility can be used to send commands.
+
+To quit RaSCSI, press Control + C. If it is running in the background, you can kill it using an INT signal.
+
 .SH OPTIONS
 .TP
-.BR \-n ", " \-\-bits = \fIBITS\R
-Default is one bit.
+.BR\-\-ID\fIn " " \fIFILE
+n is the SCSI ID number (0-7)\n
+.IP
+FILE is the name of the image file to attach to that ID.
+.TP 
+.BR\-\-HD\fIn " " \fIFILE
+n is the SASI ID number (0-15)\n
+.IP
+FILE is the name of the image file to attach to that ID.
+.IP
+Note: SASI usage is rare, and is typically limited to early Sharp X68000 systems.
 
+.SH EXAMPLES
+Launch RaSCSI with no emulated drives attached:
+   rascsi
+
+Launch RaSCSI with an Apple hard drive image as ID0 and a CD-ROM as ID 2
+   rascsi -ID0 /path/to/harddrive.hda -ID2 /path/to/cdimage.iso
+
+To create an empty, 100MB HD image, use the following command:
+   dd if=/dev/zero of=/path/to/newimage.hda bs=512 count=204800
+
+.SH SEE ALSO
+rasctl(1), scsidump(1)
+
+Full documentation is available at: <https://www.github.com/akuker/RASCSI/wiki/ls>