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- Date: Fri, 22 Oct 93 18:07:29 MDT
- From: shenson@nyx.cs.du.edu (Stephen Henson)
- Message-Id: <9310230007.AA20436@nyx.cs.du.edu>
- X-Disclaimer: Nyx is a public access Unix system run by the University
- of Denver. The University has neither control over nor
- responsibility for the opinions or correct identity of users.
- To: itschere@techfak.uni-bielefeld.de, nox@jelal.north.de
- Subject: Re: i/o speed (was: pipes & ptys)
-
- Well unless things have changed a lot since I last looked at the bios ...
- the MFP does use the transmitter buffer empty interrupt to read from a
- circular buffer. The midi port however uses polling for transmit, but buffers
- receive (which is academic with the brain dead code which loses characters).
- MiNT as has been pointed out use the internal Bconxx garbage which is
- single character stuff. You can't really read from the buffers directly unless
- you either :
- (a) have no flow control at all.
- (b) rewrite all the interrupts and buffer code.
- (a) could be used for fast I/O as a special case and is easy to do. However
- for long term (b) is the only option.
- Steve.
- PS has anyone any idea if/how to do fast I/O on the ST from PC<->ST ? I really
- could do with something which is much quicker than MIDI/RS232.
-