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Article #179Re: q:RS232 on a CBM64
From: Chris Blum
Date: Tue, 14 Mar 1995 00:10
Date: Tue, 14 Mar 1995 00:10
18 lines
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2229 bytes
On 13 Mar 1995 12:08:59 GMT, ktra93@control.auc.dk wrote in <3k1ckr$si4@news.iesd.auc.dk>: > I would like to connect my PC to my Commodore 64 through a RS232-link. > Has anybody tried this before? Is there anything weird I should > know about doing this? For instance, what voltage levels does the > PC's serial port use (CBM64 uses TTL) ? You'll need two inverters and can't go faster than 1200bps. The PC uses V.28 levels, which is +-3V to +-24V (or about +-11V in the PC), but the 1489 chip used in the PC as input driver can happily accept +5V and 0V as well (or else most mice wouldn't work). Chris -- Chris Blum <chris@phil.uni-sb.de> http://www.phil.uni-sb.de/~chris/
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10d683,efeb94067a7f2c8a X-Google-Attributes: gid10d683,public X-Google-Thread: f53ba,efeb94067a7f2c8a X-Google-Attributes: gidf53ba,public X-Google-Thread: 10265e,efeb94067a7f2c8a X-Google-Attributes: gid10265e,public X-Google-Thread: 105ed0,efeb94067a7f2c8a X-Google-Attributes: gid105ed0,public X-Google-Thread: f70d1,efeb94067a7f2c8a X-Google-Attributes: gidf70d1,public X-Google-Thread: 102bfa,efeb94067a7f2c8a X-Google-Attributes: gid102bfa,public X-Google-Thread: 103cf4,efeb94067a7f2c8a X-Google-Attributes: gid103cf4,public X-Google-ArrivalTime: 1995-03-13 16:40:52 PST Path: arc1-ca.pugleaf.net!bga.com!news.sprintlink.net!howland.reston.ans.net!math.ohio-state.edu!jussieu.fr!univ-lyon1.fr!swidir.switch.ch!scsing.switch.ch!news.dfn.de!news.coli.uni-sb.de!pf2.phil.uni-sb.de!chris.telip.uni-sb.de!not-for-mail From: chris@chris.telip.uni-sb.de (Chris Blum) Newsgroups: comp.sys.ibm.pc.hardware.comm,alt.comp.hardware.homebuilt,alt.msdos.programmer,aus.computers.ibm-pc,comp.ibm.pc.hardware,comp.ibm.pc.misc,comp.sys.ibm.pc.misc Subject: Re: q:RS232 on a CBM64 Followup-To: comp.sys.ibm.pc.hardware.comm,alt.comp.hardware.homebuilt,aus.computers.ibm-pc,comp.sys.ibm.pc.misc Date: 14 Mar 1995 01:10:48 +0100 Organization: The Outside of the Asylum Lines: 18 Distribution: world Message-ID: <3k2mu8$6df@chris.telip.uni-sb.de> References: <3k1ckr$si4@news.iesd.auc.dk> Reply-To: chris@phil.uni-sb.de (Chris Blum) NNTP-Posting-Host: chris.telip.uni-sb.de