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- Path: sparky!uunet!pipex!warwick!uknet!mcsun!sunic!seunet!kullmar!piraya!overdose!Roger_Nordin
- From: Roger_Nordin@atb.bbs.bad.se (Roger Nordin)
- Newsgroups: comp.sys.amiga.datacomm
- Subject: Re: BAUD != BPS
- Message-ID: <OD.6badnetOA92-901-302p0_5303e21b@piraya.bad.se>
- Date: 7 Nov 92 16:34:08 GMT
- References: <OA92-910-102_1581de60@piraya.bad.se>
- Sender: BadNet@piraya.bad.se
- Reply-To: Roger_Nordin@atb.bbs.bad.se (Roger Nordin)
- Organization: ANet Test Bench, Karlstad, Sweden
- Lines: 26
- OD-Comment-To: Klaus_Seistrup
-
- > | 16-Sep-92 15:09:24 Sending explodex (1065124 bytes)
- > | 16-Sep-92 15:14:44 Took 5:18, Cps: 3339, Efficiency: 231%
-
- That is how far you'll be able to go with 38400bps, using TrapDoor. In fact,
- the receiving end must have been using baudbandit.device or a special serial
- card, because this is faster than normal with a 68000@7MHz. Even my A3000 won'
- t go faster with 38400bps. In fact, you have run into the wall of the locked
- serial speed, and need to lock at 57600bps to go faster. Remember, at 3400cps
- there is only about 400cps overhead room left for the software to the
- theoretical maximum limit.
-
- > PS: And in real life - who wants to send `a file consisting of a repeated
- > single character'???
-
- Probably not so many. However, this was not the point, really. You have a)
- files that cannot be compressed at all, and b) files that can compressed "
- endlessly". A file, not pre-compressed, will fit into somewhere in between.
- Mostly you'll get a 2:1 compression ratio with V.42bis, sometimes 3:1, on
- ordinary text files. However, there is no 4:1 fixed maximum limit, and that
- was the point.
-
- _ . __
- Roger Nordin _ // /!Net /est Bench
- 2:203/602.0@fidonet \X/ Internet: Roger_Nordin@bad.se
-
- ---
-