Krzysztof Dudkiewicz (doodeck++at++uoo.univ.szczecin.pl)
Tue, 31 Jan 95 10:04:23 MET
Jim,
Thank you very much for your swift reply. I would be very grateful
if you pass to Dave these two more questions:
1. Does driver for ONYX machines support bidirectional parallel ?
Technical Report "Symmetric Multiprocessing Systems" says:
The POWERchannel-2 contains a DMA-driven parallel port capable of
operating printers or performing high-speed data transfer to or *from*
external equipment at rates up to 300 KB per second.
2. Below are fragments of manual page for scanner(1). This utility is supposed
to scan images and transfer resulting data over (among others) parallel
port. How does it work ? It seems to use parallel device driver /dev/plp.
. . . . . . . . . . .
NAME
scanner - scan color images
. . . . . . . . . . .
DESCRIPTION
scanner reads images from the Sharp FX-450 Color image scanner (and
compatible scanners) connected to the VME GPIB card from National
Instruments, the Ricoh IS-11 gray-scale and FS-1 color SCSI scanners, and
the Ricoh IS-11 scanner connected to the 4D/30, 4D/35, or 4D/RPC
*bidirectional* Centronics port.
. . . . . . . . . . .
The -t option can currently be one of gpib, scsi, or *parallel*. If none
is given, the program attempts to use the hardware inventory mechanism to
determine which type of scanner is present. The parallel type is only
valid for the IRIS 4D/30, 4D/35, and 4D/RPC, which has a *bidirectional*
Centronics interface.
The -d option specifies which device to use. If not given, it defaults
to /dev/dev7 for gpib, and to the scsi scanner with the lowest id for
scsi (typically /dev/scsi/sc0d7l0). If the system is an IRIS 4D/30,
4D/35, or 4D/RPC, the device will also default to the builtin *parallel*
interface.
. . . . . . . . . . .
/dev/plp is the *parallel* device for the IRIS 4D/30, 4D/35, and 4D/RPC.
. . . . . . . . . . .
Thanks for your time.
Chris.
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:50:54 PDT