From FLOS v568 onwards, programs (IE: files with .exe extensions) can load and run from a specific location. This is achieved by putting the following header at the start of the code (without it, programs load to $5000 as normal).

$0	$ED
$1	$00
$2	Z80 instruction: JR start_of_user_program
$4	Desired load location (of header, program follows on)
$6	Desired load bank
$7	Control byte (since FLOS v569) 1 = truncate load length using following 3 bytes
$8	Load length 0:7 (LSB)
$9	Load length 8:15
$A	Load length 16:23 (MSB)
$B	Program starts here

Source code version:

;======================================================================================
; Program Location File Header:
; FLOS v568+ will use this data to load the program to a specific location
; Earlier versions of FLOS will ignore it and load the program to $5000
;======================================================================================

my_location	equ $f000
my_bank		equ $0e


               org my_location    ; desired load address
	
load_loc     db $ed,$00     ; header ID (Invalid, harmless Z80 instruction)
             jr exec_addr   ; jump over remaining header data
             dw load_loc    ; location file should load to
             db my_bank     ; upper bank the file should load to
             db 0           ; zero = load entire file

exec_addr	

The first two bytes are the header ID (a safe non-instruction) and the following JR allows the header size to vary in future.

Main program execution begins from "exec_addr". The labels "my_location" and "my_bank" obviously should be set to suit the program. (Note: The header is loaded to "my_location" as a normal part of the file). It is advisable to add some code to check that the program has been loaded into its correct location, see the "example source" folder for a method to do this.