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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!wupost!gumby!news.cs.andrews.edu!zds-oem!easton
- From: easton@zds-oem.zds.com (Jeff Easton)
- Subject: Re: C=2232 multiser @ >>19.2Kbps??!!
- Organization: Zenith Data Systems, OEM Systems Engineering
- Date: Thu, 07 Jan 1993 01:20:42 GMT
- Message-ID: <1993Jan07.012042.1279@zds-oem.zds.com>
- References: <rlcarr.09ec@animato.network23.com> <gGcfs*Hm1@kink.PhaedraV.On.Ca> <1993Jan6.014732.981@miavx3.mid.muohio.edu>
- Lines: 27
-
- In article <1993Jan6.014732.981@miavx3.mid.muohio.edu> mchandy@miavx3.mid.muohio.edu writes:
- >In article <gGcfs*Hm1@kink.PhaedraV.On.Ca>, hugh@kink.PhaedraV.On.Ca (Hugh D. Gamble) writes:
- >
- >> If anyone has data on CPU load at high serial in/out speeds for
- >> different boards, I'd love to see it. Especially a comparison of the
- >> A2232 running one port at 115.2k with its on board CPU vs. one of the
- >> other boards using the Amigas main CPU (but with a larger buffer than
- >> the 1 byte motherboard CIA chips). I find that running the motherboard
- >> serial port at 38.4k (uucp using ser_f_radboogie) puts the CPU load of
- >> an A2500/20 at about 50%.
- >>
- >
- >Does anyone know if there is a replacement for the CIA chips that has a
- >input buffer >> 1K? I'd like to see one with 16K or so...
-
- Since the CIA is really a parallel port I doubt you'll ever see this
- happen. If I remember my Amiga trivia correctly the Paula chip has
- the shift registers for the TxD and RxD lines and hence could use
- the double buffering or FIFO. Various lines on the CIA's are pressed
- into service for the control lines like CTS, DTR, etc.
-
- --
- ___ ___ Jeff Easton easton@zds-oem.zds.com
- (__ (__ Zenith Data Systems j.easton@mi04.zds.com
- ___) ___) Saint Joseph, Mich. easton@andrews.edu
- Monte Carlo Z-LS/20 - Choice of a quiet generation
-
-