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RE: [N8VEM-S100:880] S-100 Serial I/O Board Oscillator Frequency -- Incorrect?
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- Subject: RE: [N8VEM-S100:880] S-100 Serial I/O Board Oscillator Frequency -- Incorrect?
- From: "John Monahan" <mon...@vitasoft.org>
- Date: Sun, 24 Jun 2012 14:17:11 -0700
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Yes Paul
From: John Monahan Ph.D
e-mail: mon...@vitasoft.org
Text: mon...@txt.att.net
-----Original Message-----
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On
Behalf Of Paul Birkel
Sent: Sunday, June 24, 2012 12:10 PM
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:880] S-100 Serial I/O Board Oscillator Frequency --
Incorrect?
Regarding the S-100 Serial I/O board
(http://s100computers.com/My%20System%20Pages/Serial%20IO%20Board/Serial%20I
O%20Board.htm),
why is the oscillator (P56) specified as 4.91*6*2 MHz Oscillator, full can,
rather than 4.91*5*2 MHz?
This drives the 85C30, and 4.9152 % 16 = 307.2 kHz ==> 19.2 kBaud.
I presume that this is an overlooked typo in the schematic and parts list
... right?
-----
paul