HW9: Initial glue of 7 & 8

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diff --git a/cmpen472hw2_McDonnell/bin/Project.abs b/cmpen472hw2_McDonnell/bin/Project.abs
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diff --git a/cmpen472hw2_McDonnell/bin/Project.abs.phy b/cmpen472hw2_McDonnell/bin/Project.abs.phy
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+S9030000FC
diff --git a/cmpen472hw2_McDonnell/bin/Project.abs.s19 b/cmpen472hw2_McDonnell/bin/Project.abs.s19
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+S1073000010000BF08
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+S12331201016313B4D01804C011016313B3D4C01F016313B4D01F016313B3D35FD300216D9
+S114314031470326FA313D34FE3000A70926FC303DD0
+S9030000FC
diff --git a/cmpen472hw2_McDonnell/bin/main.dbg b/cmpen472hw2_McDonnell/bin/main.dbg
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+**************************************************************************
+*
+* Title:        LED Light Blinking
+*
+* Objective:    CMPEN 472 Homework 2 in-class-room demonstration
+*               program
+*
+* Revision:     V1.0
+*
+* Date:         Jan. 29, 2025
+*
+* Programmer:   Jacob McDonnell
+*
+* Company:      The Pennsylvania State University
+*               Department of Computer Science and Engineering
+*
+* Algorithm:    Simple Parallel I/O use and time delay-loop demo
+*
+* Register Use: A: LED Light on/off state and Switch 1 on/off state
+*               X,Y: Delay and loop counters
+*
+* Memory Use:   RAM Locations from $3000 for data,
+*               RAM Locations from $3100 for program
+*
+* Input:        Parameters hard-coded in the program - PORTB
+*               Switch 1 at PORTB bit 0
+*               Switch 2 at PORTB bit 1
+*               Switch 3 at PORTB bit 2
+*               Switch 4 at PORTB bit 3
+*
+* Output:       LED 1 at PORTB bit 4
+*               LED 2 at PORTB bit 5
+*               LED 3 at PORTB bit 6
+*               LED 4 at PORTB bit 7
+*
+* Observation:  This program that blinks LEDs and blinking period can
+*               be changed with the delay loop counter value.
+*
+* Note:         All Homework programs MUST have comments similar
+*               to this Homework 2 program. So, please use those
+*               comment format for all your subsequent CMPEN472
+*               Homework programs.
+*
+*               Adding more explanations and comments help you and
+*               others to understnad your program later.
+*
+* Comments:     This program is developed and simulated using CodeWarrior
+*               development software and targeted for Axion
+*               Manufacturing's CSM-12C128 board running at 24MHz.
+*
+**************************************************************************
+* Parameter Declearation Section
+*
+* Export Symbols
+            xdef        pgstart          ; export 'pgstart' symbol
+            absentry    pgstart          ; for assembly entry point
+
+* Symbols and Macros
+PORTA       equ         $0000           ; i/o port A addresses
+DDRA        equ         $0002           ; data direction register for PORTA
+PORTB       equ         $0001           ; i/o port B addresses
+DDRB        equ         $0003           ; data direction register for PORTB
+
+**************************************************************************
+* Data Section: address used [ $3000 to $30FF ] RAM Memory
+*
+            org         $3000           ; Reserved RAM memory starting address
+                                        ;   for Data for CMPEN 472 class
+Counter1    dc.w        $0100           ; X register count number for time Delay
+                                        ;   inner loop for msec
+Counter2    dc.w        $00BF           ; Y register count number for time delay
+                                        ;   output loop for sec
+*
+**************************************************************************
+* Program Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+            org         $3100           ; Program start address, in RAM
+pgstart     lds         #$3100          ; initialize the stack pointer
+
+            ldaa        #%11111111      ; LED 1, 2, 3, 4 at PORTB bit 4, 5, 6, 7 FOR CSM-12C128 board
+            staa        DDRB            ; set PORTB bit 4, 5, 6, 7 as Output
+            
+            ldaa        #%00000000
+            staa        PORTB           ; Turn off LED 1, 2, 3, 4 (all bits in PORTB, for simulation
+            
+mainLoop
+            ldaa        PORTB
+            anda        #%00000001      ; Read switch 1 at PORTB bit 0
+            bne         sw1pushed       ; check to see if it is pushed
+            
+sw1notpsh   jsr         alternate       ; Jump to the alternate subroutine to alternate LED 1 and 4
+            bra         mainLoop        ; loop back to the beginning to check the switch
+            
+sw1pushed   jsr         allBlink        ; Jump to the allBlink subroutine to blink all lights
+            bra         mainLoop        ; loop back to the beginning to check the switch
+
+**************************************************************************
+* Subroutine Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+alternate
+            bset        PORTB,%10000000 ; Turn ON LED 4 at PORTB bit 7
+            bclr        PORTB,%00010000 ; Turn off LED 1 at PORTB bit 4
+            jsr         delay1sec       ; Wait for 1 second
+            
+            bclr        PORTB,%10000000 ; Turn off LED 4 at PORTB bit 7
+            bset        PORTB,%00010000 ; Turn on LED 1 at PORTB bit 4
+            jsr         delay1sec       ; Wait for 1 second
+            rts                         ; Return to the caller
+
+allBlink
+            bset        PORTB,%11110000 ; Turn ON all 4 LEDs
+            jsr         delay1sec       ; Wait for 1 second
+            
+            bclr        PORTB,%11110000 ; Turn off all 4 LEDs
+            jsr         delay1sec       ; Wait for 1 second
+            rts                         ; Return to the caller
+
+;*************************************************************************
+; delay1sec subroutine 
+;
+; This subroutine will delay for 1 second
+;
+; Input: a 16 bit count number in 'Counter2'
+; Output: time delay of 1 second, cpu cycles wasted
+; Registers in use: Y register as counter
+; Memory locations in use: a 16bit input number at 'Counter2'
+;
+; Comments: This subroutine requires delayMS subroutine
+;
+
+delay1sec
+            pshy                        ; save Y to the stack
+            ldy        Counter2         ; long delay by the value of Counter2
+            
+dly1Loop    jsr        delayMS          ; total time delay = Y * delayMS
+            dey
+            bne        dly1Loop
+            
+            puly                        ; restore y from the stack
+            rts                         ; return
+    
+;*************************************************************************
+; delayMS subroutine 
+;
+; This subroutine causes a few msec. Delay
+;
+; Input:                   a 16bit count number in 'Counter1'
+; Output:                  time delay, cpu cycle wasted
+; Registers in use:        X register, as counter
+; Memory locations in use: a 16bit input number at 'Counter1'
+;    
+; Comments: one can add more NOP instructions to lengthen the delay time.
+;
+
+delayMS
+            pshx                        ; save X to the stack
+            ldx        Counter1         ; short Delay
+            
+dlyMSLoop   nop                         ; total time delay = X * NOP
+            dex
+            bne        dlyMSLoop
+            
+            pulx                        ; restore X 
+            rts                         ; return 
+            
+*
+* Add any subroutines here
+*