] Maarten ter Huurne wrote:
]
] :A long cable is used for sending (MSX pin 6,7,3) and has a male DIN5 plug.
] :A short cable is used for receiving (MSX pin 1,2,8) and has a female DIN5
] :plug.
]
] Ah, didn't add that (about the long and the short cable) yet on my page.
]
]
] :> The maximum transfer speed is theoretically only limited by the MSX
] :>clock but the cable impedance (lenght and the existence or not of
] >shielding)
] :>may decrease the rate.
] :
] :So the standard should also include "you must use shielding" and "maximum
] :cable length is xx meters"?
]
] No man, that has no use. A cable without shielding can do as fine as a
] shielded cable, the only thing is that **theoretically**, the dropout-rate
] can be a little higher.
Too bad that things which can happen theoretically also will happen
practically. When the transfer speeds are high enough. So I do not think it
will be such a big issue with our Z80's at 3.58MHz. But then again, if
somebody wants to make a really long cable it could become a problem.
Anybody around here that knows more about physical limitiations, possible
radio interference problems (caused by higher harmonics generated by the
square wave) and other kind of to be expected problems?
Are there any good technical books about this topic? Or should we just start
experimenting ourselves? Do we have to re-invent the wheel? I mean,
datacommunication is not something new. It is just as old as computers are.
Kind regards,
Alex Wulms
--
Alex Wulms/XelaSoft - MSX of anders NIX - Linux 4 ever
See my homepage for info on the *** XSA *** format
http://www.inter.nl.net/users/A.P.Wulms
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