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- Newsgroups: comp.protocols.tcp-ip.ibmpc
- Path: sparky!uunet!caen!spool.mu.edu!mixcom.com!Dean.Roth
- From: Dean.Roth <Dean.Roth@mixcom.mixcom.com>
- Subject: Re: SLIP Dialers
- Organization: Milwaukee Internet Xchange BBS, Milwaukee, WI U.S.A.
- Distribution: usa
- Date: Wed, 11 Nov 1992 20:20:12 GMT
- Message-ID: <1992Nov11.202012.11167@mixcom.com>
- References: <9211111630.AA00638@top.magnus.acs.ohio-state.edu>
- Sender: xeee02@mixcom.com (Dean A. Roth)
- Lines: 38
-
- In <9211111630.AA00638@top.magnus.acs.ohio-state.edu> Art Krumsee <akrumsee@magnus.acs.ohio-state.edu> writes:
-
- >I am looking for a simple SLIP dialer. Preferably one that does not require
- >device drivers loaded in CONFIG.SYS. Any suggestions?
-
-
- One can create a dialer program with little effort using a
- software library like Greenleaf Comm Lib. I did it (for my
- employer - it's not PD).
- You load the SLIP driver, start the dialer, and away you go.
-
-
- *HOWEVER*
-
- There is one problem if your machine has a 16550 UART.
-
- The SLIP packet drivers (ETHERSL and SLIP8250) enable
- a 16550 UART's FIFO. Most comm packages, like Greenleaf,
- enable the FIFO when the com port is opened, and disable
- the FIFO when the comm port is closed by the dialer program.
- (This is not a critism of comm packages.)
- If the SLIP driver is loaded before the dialer program is
- used, which is a desired procedure, the SLIP driver will now
- be screwed up and will not work because the UART FIFO has
- been turned off.
-
- Solutions:
-
- 1) Modify the SLIP driver code to not use the FIFO. This is a
- minor change to the assembler code.
-
- 2) Modify the comm software to not touch the FIFO.
-
- 3) Don't load the driver first, which was not an option for me.
-
- 4) ?
-
- Dean
-