Re: Limits of ADB...?

[Charles Stephens <devnull@dobbs.eng.sun.com>]

>>>>> "DA" == Dave Althoff <dalloff@freenet.columbus.oh.us> writes:

 DA> Hardware question here...

 DA> I got this brilliant idea that I could run some cable downstairs and
 DA> operate my IIgs from the living room, using the TV set there as a monitor,
 DA> or hooking up a second monitor.

 DA> The question is...How far can I go with an ADB cable?  Can I successfully
 DA> use an S-Video cable as an ADB extension?  Has anyone tried going, say,
 DA> 50' with a GS keyboard and mouse?  I'm thinking that a pair of video
 DA> cables and a long keyboard cable would do the trick...  (pair of video
 DA> cables 'cause the whole idea is to pipe the signal through my VOC...)

 DA> Any thoughts?  Yeah, I guess I could set up my other IIgs, but then I'd
 DA> have to get it a hard drive, memory, modem, etc. etc. etc.  And I figure
 DA> eventually, once I get my Macincrash, I can use the same equipment to let
 DA> be browse the Web from the living room...

First, S-Video, although sharing the same connector, is not the same
as ADB.  Signal impedance is the important difference.

Secondly, there isn't much juice in ADB.  Less than 600mA for the
whole bus.  Just enough for a keyboard, a mouse and perhaps an extra
periph.  My memory faintly recalls ADB bus extenders like they have
for USB now.

People think USB is some brand new stuff, but they don't consider
Apple had it ten years ago.  Oh well.

cfs
-- 
Charles F. Stephens               = cfs  AT  eng.sun.com
Software Psychic and Illuminary   =
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