Date: Sun, 30 Jun 1996 23:48:45 -0400 From: "Jacob M. Parnas" <jparnas@jparnas.cybercom.net> To: Bernard Klatt- Admin <admin@ftcnet.com> Cc: hardware@freebsd.org, bsdi-users@bsdi.com Subject: Re: Hi-speed serial input for Pagesat HS-2000? Message-ID: <199607010348.XAA15937@jparnas.cybercom.net> In-Reply-To: Your message of Sat, 29 Jun 1996 03:11:21 PDT. <Pine.BSI.3.91.960629024903.24641C-100000@alpha.ftcnet.com>
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In message <Pine.BSI.3.91.960629024903.24641C-100000@alpha.ftcnet.com>you write: >was Re: muliport boards - building a PPP dialup server >On Sat, 29 Jun 1996, Jacob M. Parnas wrote: > >> >> I'm confused. I thought the 16550 was good up to 115,200 baud, but when >> >> ISDN eventually takes over with compression, ~512kbaud will be the norm. >> >> I don't know if they can handle that... >> > >> The TI 17550 can go up to 900kbaud/second, which is a new UART. >> >> I've seen a PC Card that costs $199-$319 depending on who you are, >> and it does everything with a UART on top (the software driver for >> BSDI will be $95. > >I'm having trouble with receive overruns with the 115.2 Kb/s news >feed from the new Pagesat HS-2000. I'm using a Lava ISA 16C550- >based com port on a 486DX4-100, 64 MB RAM, BSDI V2.1 news server. >I talked to 'Mike' at Pagesat who recommended a DOS-based PC as >a dedicated input spooler which would then feed the BSDI news >server. > This seems like an extravagant 'kludge'. I checked >around a found a couple of external serial buffer boxes, but >they wouldn't work faster than 38.4 Kb/s. CyberResearch has >a hi-speed buffered serial card, but it's designed for output >spooling. > I think what I need is a hi-speed buffered input serial >card that's compatible with the Pagesat psfrx program. I think >16 or 32 bytes of FIFO is not nearly enough since the Pagesat >data receiver does no flow control. Ideas, suggestions or product >source would be welcome. > >Bernard Klatt Owner Fairview Tech Ctr Ltd. www.ftcnet.com > My advice would be to look at www.bsdi.com and see which high speed multiport cards they have and buy them on a net-30 basis from a cheap supplier. Again, make sure that BSDI supports it. Jacob
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