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- From: Amiga-Request@cs.odu.edu (Amiga Sources/Binaries Moderator)
- Newsgroups: comp.sources.amiga
- Subject: v90i176: st - interrupt-driven serial i/o testbed, Part01/01
- Message-ID: <12705@xanth.cs.odu.edu>
- Date: 4 Jun 90 00:05:36 GMT
- Sender: tadguy@cs.odu.edu
- Reply-To: jcs@crash.uucp
- Lines: 747
- Approved: tadguy@cs.odu.edu (Tad Guy)
- X-Mail-Submissions-To: Amiga@cs.odu.edu
- X-Post-Discussions-To: comp.sys.amiga
-
- Submitted-by: jcs@crash.uucp
- Posting-number: Volume 90, Issue 176
- Archive-name: util/st/part01
-
- This code directly accesses the hardware and achieves very high
- baud rates without errors. This code should be legal if the serial
- device is first opened and exclusive access is granted. Speeds of
- over 130k baud between a stock, nofastmem 500 and a 25mhz GVP 68030
- have been achieved. The '030 Amiga can go much faster; it can read
- at least 223,720 baud. The 500 poops out at 132,575 baud. Writing
- fast is no problem, reading eats up some bandwidth, and is thus
- the bottleneck. Polled I/O (yuk) can yield faster rates. These
- baud rates were accomplished with a direct 2,3,7 wire, 50 foot
- shielded cable. Max baud rates may vary depending on cable and
- hardware configurations.
-