mjg@ecsvax.UUCP (Michael Gingell) (01/03/86)
While perusing the hardware manual and marvelling at the weird
things connected to pins on the Amiga Serial RS232 connector I
noticed the following:
Pin 15: Audio out of Amiga
Pin 16: Audio in to Amiga.
Question: Are these pins actually connected to anything, if so what?.
Is the Audio out the sum of the two stereo channels or
something else entirely.
As a side comment I find the Hardware manual sadly lacking in one major
respect - there are virtualy no diagrams. I got more understanding of
the structure of the Amiga and what is really going on from the Byte
article of last August. I know Commodore says they want to be open but
they have not given schematics or block diagrams. Admittedly there is
a lot in words but it is written as if they were trying to describe
the hardware to a blind man.
Mike Gingell ...decvax!mcnc!ecsvax!mjgsam@amiga.UUCP (Samuel C. Dicker) (01/07/86)
In article <1013@ecsvax.UUCP> mjg@ecsvax.UUCP (Michael Gingell) writes: >While perusing the hardware manual and marvelling at the weird >things connected to pins on the Amiga Serial RS232 connector I >noticed the following: > >Pin 15: Audio out of Amiga >Pin 16: Audio in to Amiga. > >Question: Are these pins actually connected to anything, if so what?. > Is the Audio out the sum of the two stereo channels or > something else entirely. The audio out on the serial connector has the same signal as the left stereo output jack (the sum of audio channels 0 and 3). It is on the serial port to allow a telephone answering device to speak and play music over the phone line. The audio in is mixed with the right stereo channel from the Amiga (the sum of audio channels 1 and 2) and connected to the right stereo output jack. It allows you to monitor the output of a telephone answering device on your stereo or the little speaker in your video monitor (YUK!, the Amiga should only be connected to your stereo :-) ). The audio in does no signal processing (such as analog to digital conversion) other than passing the signal through the anti-aliasing filter (don't ask me why?). I hope that no one was misled by the term 'audio in'. Sam Dicker (...!decvax!decwrl!pyramid!amiga!sam)