Re: Senior PROM uploaded

[jonnosan <jonnosan@gmail.com>]

On Dec 4, 5:37 am, "William Garber" <willy4...@garberstreet.com>
wrote:
> "William Garber" <willy4...@garberstreet.com> wrote in messageV_Gdnes4-I2828nanZ2dnUVZ_hGdnZ2d@comcast.com">news:V_Gdnes4-I2828nanZ2dnUVZ_hGdnZ2d@comcast.com...
>
> :
> : Ok, I ripped the code from the eproms, and
> : uploaded them along with documentation that
> : was provided and discovered online in the
> : 'Senior_PROM' folder on my site.
> :
> : I'm still looking at the board to see how
> : it is set up and I think that you can get
> : the 4 halves to work in any combo of 1st
> : half of one with second half of the other.
> :
> : IE; CD1-EF1, CD1-EF2, CD2-EF1, CD2-EF2.
>
> After reading page 11 in the file:
>
> "Senior_PROM_V3.pdf"
>
> I realize that only the 2 lower halves, or
> the 2 upper halves are active at one time.
>
> One is the standard IIe ROM (lower), and
> the other (upper), the Senior PROM.
>
> While the switch changes between the two,
> the NMI button automatically will activate
> the Senior PROM.
>
> Now to get permission from the owner to
> disassemble the board for the schematic.
>
> William Garber
> Email Address - willy4...@garberstreet.com
> Alt. Email - willy4...@comcast.net
> Web address -http://www.garberstreet.com

Bill

Thanks for the upload. I've grabbed a copy, looking forward to playing
with it this weekend.

Cheers
Jonno