From: johana!tsw@apple.com (Tom Watson)
Subject: Re: MAC II LC ---> VGA CABLE HELP???

In article <1680E7EB2.A8637710@tscc.macarthur.uws.edu.au>, l.gudiksen@uws.edu.au (Lars Gudiksen) writes:
> In article <geb1.709026588@Isis.MsState.Edu>
> geb1@ra.msstate.edu (Granville Barker) writes:
> >I heard that a cable could be made to hook a VGA monitor to a MAC II LC, does
> >anyone have the pin -- pin listings?
> >Thanks,
> >Granville Barker
>
> As published in PC Support Advisor (update 38- File H6020.1)
> Note:- I haven't tried this yet but their information is usualy acurate.
>
>                 Mac-Lc                 VGA
>         Red       2<------------------->1
>         Green     5<------------------->2
>         Blue      9<------------------->3
>
>     Red/Ground    1<------------------->6
>     Green/Ground  6<------------------->7
>     Blue/Ground  13<------------------->8
>
>         H/Sync   15<------------------->13
>         V/Sync   12<------------------->14
>     H/Snyc Grnd  14<------------------->10
>     V/SyncGrnd   11<------------------->4
>
> Note the Mac RGB outlet uses a standard D sub 15 pin connector
>          IBM VGA outlet uses a D sub 15 high densisty connector
>
> I hope this helps.

In order for the Mac LC to correctly determint the monitor, Pins 7 & 10
on the Mac LC connector MUST be connected together.  This determines
the timing, etc. for the computer when it drives the monitor.  All the other
connections are the same.  Note that the LC needs the optional 512K V-RAM
simm to support 256 colors.

Source:  Macintosh Technical Notes:  #144:  Macintosh Color Monitor
         Connections (last updated Feb 1991).

Tom Watson
tsw@johana.com