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Date: Mon, 16 Jun 1997 07:10:47 -0700<br />
<strong>From</strong>: Ted Dudziak<br />
Organization: Home Copy<br />
MIME-Version: 1.0<br />
To: Tom Howe <br />
Subject: Re: <strong>CED</strong> Digest Vol. 2 No. 24<br />
> Date: Sun, 8 Jun 1997 21:24:35 -0500 (CDT)<br />
> <strong>From</strong>: Geoff Oltmans<br />
> To: Tom Howe <br />
> Subject: Re: <strong>CED</strong> Digest Vol. 2 No. 23<br />
> MIME-Version: 1.0<br />
><br />
> Ted:<br />
><br />
> ><br />
> > At the same time that videodic was in development, the IBM-PC was<br />
> > introduced and the Apple II was going full guns. We decided to<br />
> > implement an RS-232 interface on the MAV port. Basically, the videodisc<br />
> > player "woke up" in the MAV mode. However, if the device connected to<br />
> > the videodisc asserted a "break" or an extended space on the line, then<br />
> > the unit would switch to the RS-232 mode. The commands were ASCII<br />
> > equivalents for FF, REV, etc. One should be able to communicate with<br />
> > the port using a PC and the terminal program in Windows or Procomm or<br />
> > some other communications program. The command sent by the PC will<br />
> > cause a response by the player. I left RCA before J line was released<br />
> > or I might have the command set. The commands were one or two letters<br />
> > and were the obvious combinations for the function that you want. FF for<br />
> > fast forward, etc. Give it a try but the interface needs to be 0 to 5v<br />
> > unless the boys put the clamp diode in the input circuit.<br />
><br />
> As I recall for the Colecovision system there were several proposed "Super<br />
> Game Modules" (the final product being the ADAM computer) one of which<br />
> used a videodisc player to do games like Dragon's Lair and Space Ace<br />
> through the RS-232 serial port which you suggest here. RCA and Coleco were<br />
> supposed to have collaborated on this if I remember correctly.<br />
><br />
> *Geoff!*<br />
><br />
Tom,<br />
It looks like I DO have the specification for the serial port as well as<br />
the on-screen display IC used in the J and K line players. I also have<br />
other documents such as the notes that were used for the technical
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