Upgrade to a ZX-24n???

[victorf]

I have been a long time user of the zx-24a and am quite satisfied with it. However. As I am starting a new phase of my development, I would like to ask if I should move up to a -24n? I assume that I can use the code I developed on the -24a with a -24n. Is it a wise move to go to the -24n. Is the 24n a drop-in replacement for the 24a? Is there a downside? Upside?

Any enlightenment will be appreciated.

Vic

[dkinzer]

I assume that I can use the code I developed on the -24a with a -24n.

In many cases, you should be able to re-compile the code for a ZX-24n and it will work fine. In some cases, you may have to "fix" a latent timing problem that is revealed by the significantly faster speed of the ZX-24n. If you use multiple tasks, you'll probably have to increase the task stack size - the compiler will notify you if the stacks are too small.

Is the 24n a drop-in replacement for the 24a?

The two are fully pin-compatible. The ZX-24n has a second hardware UART, more RAM, more Persistent memory and more Program Memory.

Is there a downside? Upside?

In addition to the discussion above, the VM vs Native FAQ covers the high points. If you have more specific questions after reading that we can address those.

Others who have migrated from VM to Native mode devices might wish to add some comments.