Article View: comp.sys.amiga.tech
Article #13612Re: A Cost Effective MULTI-SERIAL Device Proposition
From: David C. Albrecht
Date: Fri, 09 Feb 1990 07:51
Date: Fri, 09 Feb 1990 07:51
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In article <90037.161429NETOPRBH@NCSUVM.BITNET>, NETOPRBH@ncsuvm.ncsu.edu (Brandon Hill) writes: > First, the game port cannot alone drive a serial connection, as it is not > set up to sink or source the currents required for a serial connection. > > Second, you can't directly receive RS-232 standard signals, because they > can be anywhere between -12 and +12 volts (way out of line with what you > can expect to apply directly to the game port) Check out the MC1488 & MC1489 ICs (I think Radio Shack still carries them as 276-2520 & 276-2521). These chips are quad line drivers and receivers respectively. Their intention is DTL/TTL to RS232 conversion (or vice versa). David Albrecht
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!haven!uvaarpa!murdoch!toylnd!dcaReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!haven!uvaarpa!murdoch!toylnd!dca From: dca@toylnd.UUCP (David C. Albrecht) Newsgroups: comp.sys.amiga.tech Subject: Re: A Cost Effective MULTI-SERIAL Device Proposition Message-ID: <307@toylnd.UUCP> Date: 9 Feb 90 07:51:29 GMT References: <76649@tut.cis.ohio-state.edu> <90037.161429NETOPRBH@NCSUVM.BITNET> Distribution: usa, world Lines: 16