Re: AppleMouse firmware easter egg

[Michael J. Mahon <mjmahon@aol.com>]

<aiiadict@gmail.com> wrote:
> On Saturday, August 11, 2012 11:39:47 AM UTC-7, TomCh wrote:
>> btw, I had to look up the ctrl-e monitor cmd. For those that don't know it (to set A,X,Y):
>> 
>> CTRL-E
>> 
>> :FF C4 40<CR>
> 
> 
> That is a good command to know!  How would you be able to preserve the
> Accumulator with the value you put in it?  The monitor has to use AXY for
> cursor position, etc..
> 
> control-E
> :AA XX YY
> <return>
> 
> right back to the monitor, which will be using AXY for its own code... 
> Typing JMP XXXX or C400G would destroy the contents of the register???
> 
> 
> Rich

I imagine that it updates the save locations from which the registers are
restored prior to a Go. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon