SD Card disk drive for C-64?

Eric Christopherson echristopherson at
Sat Jan 23 20:50:18 CST 2016

On Sat, Jan 23, 2016, drlegendre . wrote:
> " I am saying don't make a permanent hardware change to a 1541 that
> does not have the switches unless you really want it to be permanent
> because there is a software method of assigning drives that is good enough
> most of the time.  BUT if you must make it permanent and you don't have the
> external switches, consider adding some form of external switch so you
> don't ever have to open the case again to put it back to the default."
> Well then, we're having a major agreement. ;-)
> The device ID switch is the ultimate fix for Commodore drives, and I'm
> really not sure why CBM didn't incorporate one into the design - at least
> from the 1540 on upwards. Can't have cost much to add a discretely located
> access hole (or a knock-out) in the case, along with a 2-place DIP switch
> for controlling device ID.

I'm feeling my C128 privilege here -- the 1571 and 1581 always had DIPs
for just that purpose, and I never even realized the 1540/1 didn't.

        Eric Christopherson

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