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isv(4) [netbsd man page]

ISV(4)							   BSD Kernel Interfaces Manual 						    ISV(4)

isv -- IDEC Supervision/16 image capture board SYNOPSIS
isv0 at isa? port 0x2f0 isv0 at isa? port 0x2e0 isv0 at isa? port 0x3f0 isv0 at isa? port 0x3e0 DESCRIPTION
isv is a driver for the IDEC Supervision/16, an image capture board that plugs into a 16-bit ISA bus. The IDEC Supervision/16 digitizes an NTSC television signal, storing a 512 x 480-pixel, 8-bit grayscale image in its 256kB dynamic RAM array every 1/30th of a second. The host reads frames from the DRAM using 122881 16-bit I/O reads. Reading frames from the Supervision/16 is quite slow: after the host reads a 16-bit word from the DRAM, the Supervision/16 state machine takes approximately 0.5 microseconds to get ready for the next read. Theoreti- cally, a frame rate of approximately 10 frames per second is possible. isv achieves a frame rate of approximately 6 frames per second. SEE ALSO
Programming the Supervision/16 Image Capture Board, IDEC, circa 1991. HISTORY
The isv device first appeared in NetBSD 5.0. AUTHORS
The isv driver was written by David Young <>. BUGS
Synchronizing with the hardware and reading frames from it is very CPU-intensive. isv will not detect the capture board if it is not attached to an active video source. To force NetBSD to detect the capture board at any time, re-scan the ISA bus using, e.g., drvctl -r isa0. BSD
April 1, 2008 BSD

Check Out this Related Man Page

SMSH(4) 						   BSD Kernel Interfaces Manual 						   SMSH(4)

smsh -- SMSC LAN9118/LAN9218 Family Ethernet interfaces device driver SYNOPSIS
smsh0 at gxio? port 0x40000300 gpirq 99 DESCRIPTION
The smsh device driver supports SMSC LAN9118 and LAN9218 Family Ethernet interfaces. The ISA attachment of the smsh driver supports any LAN9118 Family Ethernet interface on the ISA bus, the on-board LAN9118 Family Ethernet found in many embedded PCs. However, no ISA attachment has been written yet. LAN9218 Family supports also HP Auto-MDIX. MEDIA SELECTION
Media selection done using ifconfig(8) using the standard ifmedia(4) mechanism. Refer to those manual pages for more information. SEE ALSO
ifmedia(4), intro(4), isa(4), mii(4), ifconfig(8) HISTORY
The smsh driver first appeared in NetBSD 6.0. AUTHORS
The smsh driver was written by KIYOHARA Takashi <>. BUGS
No ISA attachment yet. BSD
December 2, 2009 BSD
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