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神经网络昆斯林的新闻组分类2006

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From: [e-mail] (Richard Muratti)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Parallel port
Message-ID: <[e-mail]>
Date: Thu, 15 Apr 1993 02:32:00
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Can anybody please help me with information on the use of the bi-directional
printer port.

I have successfully used one on a Toshiba laptop by enabling bit 0 of port
0x37f and controlling bit 7 of port 0x37a for the direction of data flow (ie
"0" for output, "1" for input).

The same code does not work on my desktop machine. I have heard that i might
have to use bit 5 of port 0x37a, however this also does not work.

For a parallel port i am using one of those IDE SUPER I/O cards and have been
running a tape backup unit off it via a parallel to scsi converter so i am
pretty sure that the printer port is bi-directional.


Any information would be greatly appreasiated.

Please post a reply here or Email me on

INTERNET [e-mail]

Thanks
Richard Muratti.

 * Origin: Custom Programming BBS (3:632/341)