huw@extro.ucc.su.oz.au (Huw Price) (06/04/90)
Does anyone know of a PD or shareware communications program for
the ST that supports a 1200/75 split baud rate?
Thanks,
--
Huw Price ........... huw@extro.ucc.su.oz.au
........... Traditional and Modern Philosophy
........... University of Sydney
........... Australia 2006hase@netmbx.UUCP (Hartmut Semken) (06/11/90)
In article <1990Jun4.115808.25576@metro.ucc.su.OZ.AU> huw@extro.ucc.su.oz.au (Huw Price) writes: >Does anyone know of a PD or shareware communications program for >the ST that supports a 1200/75 split baud rate? I think, it is impossible: the baud rate is generated by the timer D in the MFP 68901 chip. The generated clock is fed into the RCV_CLK and TR_CLK inputs of the same chip (the 901 is used for the serial interface). Without hacking the hardware (inside the ST or outside), it's impossible. But most modems and acoustic couplers will accept send data with 1200 baud and lower CTS (meaning "not-clear-to-send") when their buffer has filled up. hase -- Hartmut Semken, Lupsteiner Weg 67, 1000 Berlin 37 hase@netmbx.UUCP Hi! (Zaphod Beeblebrox)
jens@jeyhh.UUCP (Jens Ey) (06/12/90)
In article <784@netmbx.UUCP> hase@netmbx.UUCP (Hartmut Semken) writes: > In article <1990Jun4.115808.25576@metro.ucc.su.OZ.AU> huw@extro.ucc.su.oz.au (Huw Price) writes: > >Does anyone know of a PD or shareware communications program for > >the ST that supports a 1200/75 split baud rate? > > Without hacking the hardware (inside the ST or outside), it's > impossible. > It IS possible! Once upon a time there was a lovely little ACC on my disc wich changed a few bits to run 1200/75 or 75/1200. I think it was PD but I'm not sure. With this ACC it's possible to run these speeds with nearly all com-programs. I'm sorry but I trashed it a year ago 'cause I didn't need it. -- ----- Realitaet ist die Illusion, die durch Mangel an Alkohol entsteht jens@mcshh.UUCP jens@jeyhh galax_map: jens@jeyhh.earth.sol.milkyway.UUCP
ngse18@castle.ed.ac.uk (J R Evans) (06/12/90)
In article <1990Jun4...> huw@extro.ucc.su.oz.au (Huw Price) asked: >Does anyone know of a PD or shareware communications program for >the ST that supports a 1200/75 split baud rate? To which Hartmut Semken responded with good reasons why > ... >Without hacking the hardware (inside the ST or outside), it's >impossible. > ... However, Hartmut may not have the complete story. One David Jones here in the UK has distributed a shareware program which he claims provides the conversion from V22 (1200/1200) to V23 (i.e. 1200/75). I came across a copy whilst tidying my disks recently, and could probably post if prompted (it was less than 2K). A disclaimer - my modem can generate split rates internally, so I've never had cause to try it out myself. I recall reading a description of the kludge by which this was done, I think written by David Jones himself in the very early days of the ST. It may be in the 'Best of Bix' section which Byte published at one time. I think David has some connection with the CIX system here in Britain. Russ
grahamt@syma.sussex.ac.uk (Graham Thomas) (06/14/90)
From article <784@netmbx.UUCP>, by hase@netmbx.UUCP (Hartmut Semken): > In article <1990Jun4.115808.25576@metro.ucc.su.OZ.AU> huw@extro.ucc.su.oz.au (Huw Price) writes: >>Does anyone know of a PD or shareware communications program for >>the ST that supports a 1200/75 split baud rate? > > I think, it is impossible: the baud rate is generated by the timer D in > the MFP 68901 chip. > The generated clock is fed into the RCV_CLK and TR_CLK inputs of the > same chip (the 901 is used for the serial interface). > > Without hacking the hardware (inside the ST or outside), it's > impossible. > There are several commercial programs which allow you to call up services transmitting at 1200/75 bits per second (V23). Two of them are Fastcom (the ST version of Vicom for the PC) and K-Comm. They also support viewdata services (videotex services operating to the Prestel standard). However, they are not PD/Shareware, and are not particularly wonderful programs either. Uniterm can be made to work with a 1200/75 service by using a PD program called V23EMU. It was written by David Jones in 1986 and is certainly available on several UK bulletin boards. I can mail a copy to anyone who's interested. I had some problems with some characters I typed not being echoed to the screen, but I was never sure whether this was the fault of the program or that of the complicated host I was accessing. Graham -- Graham Thomas, SPRU, Mantell Building, U of Sussex, Brighton, BN1 9RF, UK JANET: grahamt@uk.ac.sussex.syma BITNET: grahamt%syma.sussex.ac.uk@UKACRL INTERNET: grahamt%syma.sussex.ac.uk@nsfnet-relay.ac.uk UUCP: grahamt%syma.sussex@ukc.uucp PHONE: +44 273 686758 FAX: [..] 685865
huw@extro.ucc.su.OZ.AU (Huw Price) (06/14/90)
From article <7501336@jeyhh.UUCP>, by jens@jeyhh.UUCP (Jens Ey): > In article <784@netmbx.UUCP> hase@netmbx.UUCP (Hartmut Semken) writes: >> In article <1990Jun4.115808.25576@metro.ucc.su.OZ.AU> huw@extro.ucc.su.oz.au (Huw Price) writes: >> >Does anyone know of a PD or shareware communications program for >> >the ST that supports a 1200/75 split baud rate? >> >> Without hacking the hardware (inside the ST or outside), it's >> impossible. >> > It IS possible! Once upon a time there was a lovely little ACC on my disc > wich changed a few bits to run 1200/75 or 75/1200. I think it was PD but > I'm not sure. > With this ACC it's possible to run these speeds with nearly all com-programs. > I'm sorry but I trashed it a year ago 'cause I didn't need it. > If anyone has a copy of this lovely little ACC, could they email it to me? Thanks. -- Huw Price ........... huw@extro.ucc.su.oz.au ........... Traditional and Modern Philosophy ........... University of Sydney ........... Australia 2006
ralph@laas.fr (Ralph P. Sobek) (07/02/90)
In France there are a lot of BBS programs which suppose that you have a 1200/75 modem behing your Atari. This is because the Frecn PTT authority gave out thousands of such modems under the name Minitel. -- Ralph P. Sobek Disclaimer: The above ruminations are my own. ralph@laas.fr Addresses are ordered by importance. ralph@laas.uucp, or ...!uunet!laas!ralph If all else fails, try: sobek@eclair.Berkeley.EDU =============================================================================== Reliable software should kill people reliably! -Andy Mickel, Pascal News #13,78