Article View: comp.sys.ibm.pc
Article #43548Re: MSC, Devices, and 0x1a
From: walt dixon
Date: Tue, 06 Mar 1990 13:42
Date: Tue, 06 Mar 1990 13:42
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If one opens a device at the DOS level (using a handle), and then
does an IOCTL to place the device in raw mode, all output (including
0x1a) goes directly to the device. Raw mode also has a definte
performance advantage over text mode. DOS sends text mode writes
to the driver one character at a time but sends the entire request
with one driver call for raw mode.
Walt Dixon {arpa: dixon@crd.ge.com }
{us mail: ge crd }
{ po box 8 }
{ schenectady, ny 12301 }
{phone: 518-387-5798 }
Walt Dixon dixon@crd.ge.com
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!mcsun!sunic!uupsi!rpi!crdgw1!ra!dixon From: dixon@ra.crd.ge.com (walt dixon) Newsgroups: comp.sys.ibm.pc Subject: Re: MSC, Devices, and 0x1a Message-ID: <5803@crdgw1.crd.ge.com> Date: 6 Mar 90 13:42:38 GMT References: <10521@ttidca.TTI.COM> Sender: news@crdgw1.crd.ge.com Reply-To: dixon@ra.crd.ge.com (walt dixon) Organization: General Electric Corp. R&D, Schenectady, NY Lines: 14