SD Card disk drive for C-64?

william degnan billdegnan at
Sat Jan 23 16:07:48 CST 2016

On Sat, Jan 23, 2016 at 4:12 PM, Jim Brain <brain at> wrote:

> On 1/23/2016 2:18 PM, drlegendre . wrote:
>> First off, my bad - I thought the OP was wanting to change the device ID
>> (which is not the drive number, btw**) on a genuine 1541. I'd have no idea
>> how it's done with one of the SD-based drive emulators.
> Google is still a friend:
> There are no external switches on some of these drives.
> But, the BASIC commands used to switch device numbers on the 1541 also
> work on these units, and putting an extra char at the end of the command
> will make the changes permanent, as I recall.
> Jim

Right.  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.  Less
likely to burn traces, etc if you can avoid working on the same circuit
more than once.


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