# Include nios_macros.s to workaround a bug in the movia pseudo-instruction.
.include "nios_macros.s"

.equ RED_LEDS, 0x10000000
.equ GREEN_LEDS, ?     # (Hint: See DESL website for documentation on LEDs)

.data                  # "data" section for input and output lists

IN_LIST:               # List of 10 words starting at location IN_LIST
    .word 1
    .word -1
    .word -2
    .word 2
    .word 0
    .word -3
    .word 100
    .word 0xffffff9c
    .word 0x100
    .word 0b1111
    
OUT_NEGATIVE:
    .skip ?            # Reserve space for 10 output words
    
OUT_POSITIVE:
    .skip ?            # Reserve space for 10 output words

#-----------------------------------------

.text                  # "text" section for (read-only) code

    # Register allocation:
    #   r0 is zero, and r1 is "assembler temporary". Not used here.
    #   r2  Holds the number of negative numbers in the list
    #   r3  Holds the number of non-negative numbers in the list
    #   r_  A pointer to ___
    #   r_  loop counter for ___
    #   r16 Register for short-lived temporary values.
    #   etc...

.global _start
_start:

    # Your program here. Pseudocode and some code done for you:
    
    # Begin loop to process each number
    
        # Process a number here:
        #    if (number is negative) { 
        #        insert number in OUT_NEGATIVE list
        #        increment count of negative values (r2)
        #    } else {
        #        insert number in OUT_POSITIVE list
        #        increment count of non-negative values (r3)
        #    }
        # Done processing.
        
        # After processing each number, output current counts to LEDs.
        # (You'll learn more about I/O in Lab 4.)
        movia  r16, RED_LEDS          # r16 is a temporary value
        stwio  r2, 0(r16)             # Send r2 out to the red LEDs device
        movia  r16, GREEN_LEDS
        stwio  r3, 0(r16)             # Send r3 out to the green LEDs device
        # Finished output to LEDs.
        
    # End loop

LOOP_FOREVER:
    br LOOP_FOREVER                   # Loop forever.