[Coco] Help with dumping various EPROMS

Arthur Flexser flexser at fiu.edu
Sun May 10 22:00:08 EDT 2015


They all start with $C000.  An 8K EPROM, which I believe CDOS is, will end
at $DFFF.  A 16K EPROM should be saved up to $FEFF (Extended ADOS3).  I
think RGBDOS is 8K, not sure there.  If it is in a 2764 EPROM, it is 8K, if
it is in a 27128 EPROM, it may be 16K.

In all cases, if you're saving from a CoCo 3, you must do a POKE &HFFDE,0
prior to the SAVEM, from a WIDTH 32 screen, to put the CoCo 3 into ROM mode.

Art

On Sun, May 10, 2015 at 9:52 PM, Ron <ron at kdomain.org> wrote:

> Hello all,
>
> New to the list and recently getting back to using my CoCo after more
> years than I'd like to count...  :)
>
> I opened up one of my Distro Super Controllers and noticed I populated 3
> of the 4 available banks with various EPROMS I had burned a while back.
> These include Extended ADOS3, RGB-DOS & CDOS.  I'd like to dump all of
> these to diskette for backups just in case I would ever want to burn
> additional copies or use them in an emulator (if possible).
>
> I'm still trying to remember how to do this - I know I can do it with a
> SAVEM command, but need to know the address ranges.  These are all 28 pin
> EPROMS.
>
> Can anyone assist?
>
> Thanks!
>
> -Ron
>
>
>
>
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