defBYTE Directive
The defBYTE
directive directs SPLat/PC to create a byte variable and reserve a nominated amount of RAM to hold its data. The variable will be initialised to 0 at power on. The location of the variable is allocated automatically by SPLat/PC and might move the next time you build the code. Thus, you should always refer to the variable by its label.
Syntax:
Label defBYTE {NumberOfBytes}
Where:
- Label is the name of the variable
- NumberOfBytes is optional and may be used to specify how many bytes should be reserved for the variable. It defaults to 1. Reserving more than one is useful for making a buffer or an array of bytes.
Example:
Label defBYTE Value
This will automatically allocate Value
bytes of RAM and assign the address of the first byte to Label
.
An error will be raised if SPLat/PC is unable to find enough free RAM.