admin-guide/blockdev/paride.rst

5 PARIDE v1.03   (c) 1997-8  Grant Guenther <grant@torque.net>
12 to personal computers, many external devices such as portable hard-disk,
13 CD-ROM, LS-120 and tape drives use the parallel port to connect to their
14 host computer.  While some devices (notably scanners) use ad-hoc methods
16 external devices are actually identical to an internal model, but with
17 a parallel-port adapter chip added in.  Some of the original parallel port
18 adapters were little more than mechanisms for multiplexing a SCSI bus.
19 (The Iomega PPA-3 adapter used in the ZIP drives is an example of this
21 The adapter chip reproduces a small ISA or IDE bus in the external device
25 controller like an NCR 5380.  The "ditto" family of external tape
27 which is then connected to a floppy-tape mechanism.  The vast majority
28 of external parallel port devices, however, are now based on standard
30 were to open up a parallel port CD-ROM drive, for instance, one would
31 find a standard ATAPI CD-ROM drive, a power supply, and a single adapter
33 IDE cable.  It is usually possible to exchange the CD-ROM device with
41 	- MicroSolutions backpack CD-ROM
42 	- MicroSolutions backpack PD/CD
43 	- MicroSolutions backpack hard-drives
44 	- MicroSolutions backpack 8000t tape drive
45 	- SyQuest EZ-135, EZ-230 & SparQ drives
46 	- Avatar Shark
47 	- Imation Superdisk LS-120
48 	- Maxell Superdisk LS-120
49 	- FreeCom Power CD
50 	- Hewlett-Packard 5GB and 8GB tape drives
51 	- Hewlett-Packard 7100 and 7200 CD-RW drives
53 as well as most of the clone and no-name products on the market.
60 The second component is a set of low-level protocol drivers for each of the
66         aten    ATEN EH-100                            (HK)
68         comm    DataStor (old-type) "commuter" adapter (TW)
69         dstr    DataStor EP-2000                       (TW)
72 	fit2    FIT TD-2000			       (US)
73 	fit3    FIT TD-3000			       (US)
76         kbic    KingByte KBIC-951A and KBIC-971A       (TW)
100 For the "brand-name" products listed above, here are the protocol
101 and high-level drivers that you would use:
106 	MicroSolutions		CD-ROM		bpck
108 	MicroSolutions		hard-drive	bpck
114 	FreeCom			CD-ROM		frpw
115 	Hewlett-Packard		5GB Tape	epat
116 	Hewlett-Packard		7200e (CD)	epat
117 	Hewlett-Packard		7200e (CD-R)	epat
126 	# echo "port protocol mode unit delay" >/sys/bus/pata_parport/new_device
133 	mode	 mode number (protocol-specific) or -1 for probe
147 	# echo auto >/sys/bus/pata_parport/new_device
149 Probe parport0 using protocol epat and mode 4 (EPP-16)::
151 	# echo "parport0 epat 4" >/sys/bus/pata_parport/new_device
155 	# echo "parport0 auto" >/sys/bus/pata_parport/new_device
159 	# echo "auto epat" >/sys/bus/pata_parport/new_device
163 	# echo pata_parport.0 >/sys/bus/pata_parport/delete_device
170 ----------------------------
179 -------------------------
185 the default and set it to 0 - resulting in somewhat higher transfer
192 -------------------------------------
194 There appear to be a number of "noname" external drives on the market