16F88 IRP Problem

[jerryd]

Electro Tech,

Tried this post on another forum and didn't get an answer.

When I build my 16F88 program with Mikrobasic Pro I get this
error message:

27 1519 IRP bit must be set manually for indirect access to 'bits' variable

The variable "bits' is defined as dim bits as byte[18][5]
18 * 5 = 90 so there shouldn't be a bank switching problem.

I put this at the top of my variable definitions thinking that
would put all of this array in bank0 but it didn't help.

I do have other variables defined.

Can I the IRP=X command to get around this limitation?

jerryd

 

[Pommie]

The IRP bit is in the STATUS register and is the 9th bit (bit 8) of the indirect addressing pointer FSR. I'm guessing you're accessing an array in banks 2 or 3, if so try IRP=1. If in bank 0 and 1 then do IRP=0.

Mike.

 

[jerryd]

Pommie,

Where do I put the IRP commands before the dim of the variable
or when I do the indirect addressing?

IRP=1
dim bits as byte[18][5]
IRP=0

or

IRP=1
PORTA = bits[n][x]
IRP-0


Also I read about the "absolute" directive but it didn't
seem to help much.

dim bits as byte[18][5] absolute 0x32

jerryd

 

[Pommie]

I have no idea how your compiler deals with it. Most compilers handle it automatically. Try reading the "indirect" addressing mode. Note, IRP = Indirect Address Pointer.

Mike.