Re: [nznog] MP3 streaming data usage
At 03:38 p.m. 16/04/2007 +1200, Neil Gardner wrote:
Ergh... Hate to say this, but don't you have that 10 bits to the byte thing approximately ass-backwards?
No. As I said, I come from an Ancient World (TM), where we debugged protocols like DDCMP with a Tek Logic Analayser, scope or logic probe. None of this Ethereal stuff, ethernet hadn't escaped from PARC and Vint was still drawing on envelopes. RS-232 was modern, current loop was till very active (sorry, no pun intended). (Probably Michael Newberry is the only one who will get it anyway, Andy and Sid say they're too young, and the others are looking blank) Each Byte is (or was) a START bit, 8 data bits, PARITY and a STOP or IDLE bit. So we always approximated it to 10 bits. (different devices handle parity bits different ways, it used to be that if there was no parity, no bit was used. LSI USARTS started the trend towards always having a bit used. This is a world where a serial port took up a whole UNIBUS slot (ie a card 400mm by 200mm). As I said, its an approximation for budgeting purposes and comes from an ancient era. Have you found the beer yet ? R
...and multi-drop serial was going to be the answer to all the cabling worries of the world..... ...a good BOB (Break out box) cost you $500 dollars, and probably paid for itself in a week.... Ahhhhh them was the days Ross Wakelin Consultancy and Design Manager +64 3 371 9721 (extn 33721) +64 3 379 5678 +64 27 533 4380 ross.wakelin(a)gen-i.co.nz www.gen-i.co.nz Level 1, 52 Oxford Terrace PO Box 3775, Christchurch ________________________________ "This communication, including any attachments, is confidential. If you are not the intended recipient, you should not read it - please contact me immediately, destroy it, and do not copy or use any part of this communication or disclose anything about it. Thank you. Please note that this communication does not designate an information system for the purposes of the Electronic Transactions Act 2002." -----Original Message----- From: Richard Naylor [mailto:richard.naylor(a)r2.co.nz] Sent: Monday, 16 April 2007 4:20 p.m. To: Neil Gardner; nznog(a)list.waikato.ac.nz Subject: Re: [nznog] MP3 streaming data usage At 03:38 p.m. 16/04/2007 +1200, Neil Gardner wrote:
Ergh... Hate to say this, but don't you have that 10 bits to the byte thing approximately ass-backwards?
No. As I said, I come from an Ancient World (TM), where we debugged protocols like DDCMP with a Tek Logic Analayser, scope or logic probe. None of this Ethereal stuff, ethernet hadn't escaped from PARC and Vint was still drawing on envelopes. RS-232 was modern, current loop was till very active (sorry, no pun intended). (Probably Michael Newberry is the only one who will get it anyway, Andy and Sid say they're too young, and the others are looking blank) Each Byte is (or was) a START bit, 8 data bits, PARITY and a STOP or IDLE bit. So we always approximated it to 10 bits. (different devices handle parity bits different ways, it used to be that if there was no parity, no bit was used. LSI USARTS started the trend towards always having a bit used. This is a world where a serial port took up a whole UNIBUS slot (ie a card 400mm by 200mm). As I said, its an approximation for budgeting purposes and comes from an ancient era. Have you found the beer yet ? R _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog
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Ross Wakelin