Various programs written in ARM These programs can be tested in an online simulator found here: https://cpulator.01xz.net/?sys=arm-de1soc or using a DE1-SoC FPGA board

• Finds the largest number from a list of numbers

• Calculates the number of consecutive ones in from a list of numbers in a subroutine

• Longest string of 1's in a word of data - result into R5
• Longest string of 0's in a word of data - result into R6
• Longest string of alternating 1's and 0's in a word of data — result into R7

• Displays a decimal digit on the seven-segment display HEX0
• If KEY0 is pressed the number displayed on HEX0 is 0
• If KEY1 is pressed increment the displayed number
• If KEY2 is pressed then decrement the number
• If KEY3 is pressed the display goes blank
• Any other KEY after that returns the display to 0

• Displays a two-digit decimal counter on the seven-segment displays HEX1-0
• Counter increments approximately every 0.25 seconds
• Uses the edge capture register to avoid missed presses during delay loop

• Similar to Delay.s but the A9 private timer is used to achieve an accurate 0.25 second delay

• Uses HEX3-0 to display a timer in the format 00:00

• Shows number 0 to 3 on HEX0 to HEX3 respectively when the corresponding KEY is pushed
• Uses processor interrupts and GIC (Generic Interrupt Controller)

• Uses the interrupt service routine for the Interval Timer
• Counts up, shown on LEDR, and can be stopped/started with any KEY

• Similar to LightTimer.s but KEY0 toggles RUN, KEY1 doubles the increase rate, KEY2 halves the increase rate

• Animates a line down and up on the screen
• Incorporates the VGA addresses and waits for V-sync

• Lights up the corresponding numbers on HEX to the total binary number indicated by the switches

• Flashes LEDR0 every 0.5 seconds using the A9 Private Timer

• A combination of LightBinaryAdd.s and FlashLED.s but the number will stay on after done flashing

Various programs written in C for an ARM processor These programs can be tested in an online simulator found here: https://cpulator.01xz.net/?sys=arm-de1soc using the C option, or using a DE1-SoC FPGA board

• Implements Bresenham’s line-drawing algorithm to draw a few lines on the screen

• Moves a line down and up a screen and uses V-sync
• A pixel buffer "swap" is used as a way of synchronizing with the VGA controller via the S bit in the Status register

• Creates an animation of eight small rectangles that "bounce" around on screen
• Each is connected by a line

• Flashed characters displayed on the HEX, written in C, using correct addresses of each
• Does not use hardware timer

• Turns on one light at a time across all LEDRs
• Clicking any button will change the direction

• Displays a scrolling message across the HEX displays
• Pressing any KEY will toggle the scrolling animation

• Similar to MovingCharacters.c but KEY0 Starts/Stops animation, KEY1 doubles the increase rate, KEY2 halves the increase rate, KEY3 reverses the direction