Patches and discussion for Ensoniq VFX family

How do you tell if your sequencer memory has been expanded?  I am in the process of doing/having some work done to my Ensoniq SD-1.  
 
1) The Data slider broke during a move and needs to be replaced :-( 
 
2) The battery has lasted a lot longer than I am sure it was ever intended to last (I looked last weekend... no corrosion... whew...
 
3) I currently have version 3.0 of the OS and I am contemplating an upgrade to OS 4.10... Need to get the OS chips for that (have the disc already)
 
        a)  Does anyone know what added features/benefits 4.10 offers over 3.0?
  


On Thursday, August 14, 2014 9:24 AM, "sonofspy777@... [Ensoniq-VFX-SD]" <Ensoniq-VFX-SD@yahoogroups.com> wrote:
  


  
$50 bucks for 2Mb of memory = Highway Robbery2 chips withidentical specs @$2.05 each = $4.10 from Mouser Electronics...Any questions?-Alan