Use the A version of the include file. A means it's a silicon revision, but it's the same chip. So the software should still work (like you said the pinouts are the same). But the internal memory mapping might be different from the silicon revision, so use the A version of the include file.
Use the A version of the include file. A means it's a silicon revision, but it's the same chip. So the software should still work (like you said the pinouts are the same). But the internal memory mapping might be different from the silicon revision, so use the A version of the include file.
From MicroChip.
They are on your computer if you installed MPLAB in the default config:
C:\Program Files\Microchip\MPASM Suite
You can also read the migration DOC from Microchip do find out all the differences between the A and non-A versions: https://www.electro-tech-online.com/custompdfs/2008/05/40048a.pdf