Assembly codes for PICs - question in bank memory changes

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boncker

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Guys,
In the MPLAB software, the disassembler function (from C to assembler) you can see the own code, but instead of register names you will see the register address. If I do some code directly in assembly to use in the PIC 16F877A for example (it has 4 memory banks), I need to use the STATUS register to change the bank.
If I write the assembly code putting the register address instead of register name, will be necessary to modify STATUS's RP1/RP0 to change the memory banks?

Thanks!
 

Re: Assembly codes for PICs - question in bank memory change

Yes, it will be necesary.

Names are the same as address, they are just for human confort(if there is any)

It is all about instrucctions, they just work with the active bank. That's why mplab wanings tell you to beware of bank changes whenever it sees an register (name or adfdress) from a high bank

So if you hate so much cahngin banks you coud use indirect addressing trough FSR register.

You can also program using a C compiler and you can forget all about banks, but you will have others things to learn and worry about
 

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    boncker

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