daven@svc.portal.com (01/13/91)
In article <24966@dime.cs.umass.edu> leban@cs.umass.edu (Bruce Leban) writes: >1. Are there any monitors which are page size, landscape orientation? > Radius makes the "Pivot" which can be rotated to that orientation, but > I'm looking for something which is always landscape (and cheaper than > the Pivot or a two page monitor). I don't know of any myself. A Radius TwoPage B&W display is essentially a large landscape orientation monitor. That might be a bit large and expensive for your needs though. >2. I have been told by a usually reliable source (MacConnection) that you > can hook a single Mac up to a single AppleTalk device (e.g, a non-SC > LaserWriter) with an ImageWriter cable, with the implication that > somehow the wires are right for a two node AppleTalk network. Is this > correct? Apple of course says to buy two AppleTalk connector kits. Hmmm. Sounds a bit fishy to me. They might have meant that you can connect to a LaserWriter's serial port using a ImageWriter cable. LaserWriter's can be operated over a serial cable in this manner. I can't imagine an ImageWriter cable would work on a Appletalk port a) becuase the connector is physically different, b) because Localtalk electrical signals are very different from RS-232 electrical signals. -- ------------------------------------------------------------------------------- Dave Newman | daven@sv.portal.com | "Hacking only works so far before Software Ventures | AOL: MicroPhone | the tree begins to fall." Berkeley, CA | AppleLink: D0025 | - Rush Drake
amichiel@rodan.acs.syr.edu (Allen J Michielsen) (01/16/91)
In article <1991Jan15.150236.20871@rodan.acs.syr.edu> isr@rodan.acs.syr.edu >In article <1991Jan12.213455.7162@svc.portal.com> daven@svc.portal.com writes: >>In article <24966@dime.cs.umass.edu> leban@cs.umass.edu (Bruce Leban) writes: >>> (it is o.k. to) hook a single Mac up to a single AppleTalk device >>> with an ImageWriter cable, with the implication (this is a) two node >>> AppleTalk network. Is this correct? >>Hmmm. Sounds a bit fishy to me. >actually, this will work, but what you do is connect the Mac's >printer port to the Laserwriter appletalk port, just as you do with >applealk boxes in place. Apple did onces recommend this (highly). The problem can be, when the mac and printer are on isolated ac supplies, damage to 1 or both ports can occur. (This is about as likely as a snow in hell, except when at research/university sites). Then apple dropped this recommendataion, but many dealer still recommend it, sell it, support it, and we use it quite a bit. (When using a outlet strip with either a surge surpressor or fuse/breaker, or a individual surge protector, be sure to have the printer and computer BOTH on the same line it's possible that a fault or poor/cheap design could duplicate the problem.) (p.s. I have yet to have 1 break, but....). When in the chooser, you will still be telling it that you are using apple talk. At this (chooser) level, you are telling it what software protocool to use, NOT what hardware you have. Of course what mike says is true, any line conversion from rs232 voltage levels is done by whatever (distance extender) boxes you generally use (farallon-phonenet or apple-localtalk or ...). al -- Al. Michielsen, Mechanical & Aerospace Engineering, Syracuse University InterNet: amichiel@rodan.acs.syr.edu amichiel@sunrise.acs.syr.edu Bitnet: AMICHIEL@SUNRISE
hamilton@kickapoo.cs.iastate.edu (Jon Hamilton) (01/16/91)
daven@svc.portal.com writes: >In article <24966@dime.cs.umass.edu> leban@cs.umass.edu (Bruce Leban) writes: [monitor stuff deleted...] >>2. I have been told by a usually reliable source (MacConnection) that you >> can hook a single Mac up to a single AppleTalk device (e.g, a non-SC >> LaserWriter) with an ImageWriter cable, with the implication that >> somehow the wires are right for a two node AppleTalk network. Is this >> correct? Apple of course says to buy two AppleTalk connector kits. >Hmmm. Sounds a bit fishy to me. They might have meant that you can connect >to a LaserWriter's serial port using a ImageWriter cable. LaserWriter's >can be operated over a serial cable in this manner. I can't imagine an >ImageWriter cable would work on a Appletalk port a) becuase the connector >is physically different, b) because Localtalk electrical signals are very >different from RS-232 electrical signals. No, you can really use an ImageWriter II cable in a two node network. I have an Imagewriter 2 and an SE/30, and have an appletalk card in the printer for reasons that I'm sure you don't care about. I use a stock IW2 cable and it works fine (and has for quite some time now). >-- >------------------------------------------------------------------------------- >Dave Newman | daven@sv.portal.com | "Hacking only works so far before >Software Ventures | AOL: MicroPhone | the tree begins to fall." >Berkeley, CA | AppleLink: D0025 | - Rush Drake -- % Internet : hamilton@kickapoo.cs.iastate.edu | Insert cute and/or % % America Online : JonHam | deeply meaningful % % Elsewhere : ThatGeek@his.little.corner | musical quote here %
leban@cs.umass.edu (Bruce Leban) (01/17/91)
A week ago I asked the following questions. Here is a summary of the answers. (Note that this is a true summary, something I wish more people did. Summarizing to the net shouldn't mean just concatenating all replies.) > Two peripherally related questions (both about peripherals, that is): > > 1. Are there any monitors which are page size, landscape orientation? > Radius makes the "Pivot" which can be rotated to that orientation, but > I'm looking for something which is always landscape (and cheaper than > the Pivot or a two page monitor). There are no landscape monochrome monitors known to the net. The best alternative seems to be a cheap two page monitor which would be wide enough even if it's taller than needed. Or 2 monitors side-by-side. :-) [francis@zaphod.uchicago.edu] E-Machines does have a landscape monitor, the T16, but it's color (8-bits deep) and it's even more expensive than the Pivot (~$2000). [cca@physics.purdue.edu] Also, Radius has a new Pivot model (the "soft" Pivot) which plugs directly into a IIci/si without an interface card, list $1295. [lemke@radius.com] > 2. I have been told by a usually reliable source (MacConnection) that you > can hook a single Mac up to a single AppleTalk device (e.g, a non-SC > LaserWriter) with an ImageWriter cable, with the implication that > somehow the wires are right for a two node AppleTalk network. Is this > correct? Apple of course says to buy two AppleTalk connector kits. A straight through (din 8 to din 8) cable (ImageWriter II) works. Yes. [cheshire@cs.stanford.edu, davisson@milton.u.washington.EDU] ...and it actually works. [rsherman@mthvax.cs.edu, edgar@shape.mps.ohio-state.EDU] In fact, this is what Apple used to recommend. A problem can arise if the Mac & printer are on different AC supplies. [amichiel@rodan.acs.syr.edu] Some of the extra wires in the AppleTalk/PhoneNet cables are to make sure that one node can't put too much power on the lines and damage everyone else. [royleban@dbase.a-t.com] Connecting both to the same surge suppressor/ power strip is a good idea. LocalTalk signals are very different from RS-232 electrical signals. [daven@sv.portal.com] ...but this is irrelevant. You connect the Mac's printer port to the printer's "AppleTalk" port. Of course this is really a serial port just like the one on the Mac. [Mike_Schechter@isr.syr.edu] You still select AppleTalk in the chooser. --- Bruce Leban@cs.umass.edu @amherst.mass.usa.earth