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-rw-r--r--cmpen472_hw8McDonnell/Full_Chip_Simulation.ini2
-rw-r--r--cmpen472_hw8McDonnell/Sources/main.asm267
-rw-r--r--cmpen472_hw8McDonnell/bin/Project.absbin7328 -> 7576 bytes
-rw-r--r--cmpen472_hw8McDonnell/bin/Project.abs.phy2
-rw-r--r--cmpen472_hw8McDonnell/bin/Project.abs.s1979
-rw-r--r--cmpen472_hw8McDonnell/bin/main.dbg267
-rw-r--r--cmpen472_hw8McDonnell/cmpen472_hw8McDonnell.mcpbin57065 -> 57065 bytes
-rw-r--r--cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.obin7328 -> 7576 bytes
-rw-r--r--cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.sx79
-rw-r--r--cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/TargetDataWindows.tdtbin64523 -> 64924 bytes
10 files changed, 372 insertions, 324 deletions
diff --git a/cmpen472_hw8McDonnell/Full_Chip_Simulation.ini b/cmpen472_hw8McDonnell/Full_Chip_Simulation.ini
index e4aeeaf..eb3f16f 100644
--- a/cmpen472_hw8McDonnell/Full_Chip_Simulation.ini
+++ b/cmpen472_hw8McDonnell/Full_Chip_Simulation.ini
@@ -10,7 +10,7 @@ Target=sim
Layout=ASM_layout.hwl
LoadDialogOptions=AUTOERASEANDFLASH NORUNAFTERLOAD
CPU=HC12
-MainFrame=0,1,-1,-1,-1,-1,312,312,2232,1335
+MainFrame=0,1,-1,-1,-1,-1,90,205,2010,1221
Configuration=Full_Chip_Simulation.hwc
Statusbar=1
ShowToolbar=1
diff --git a/cmpen472_hw8McDonnell/Sources/main.asm b/cmpen472_hw8McDonnell/Sources/main.asm
index 2f83517..6deb86c 100644
--- a/cmpen472_hw8McDonnell/Sources/main.asm
+++ b/cmpen472_hw8McDonnell/Sources/main.asm
@@ -84,9 +84,17 @@ minutes dc.w $0000 ; Buffer to hold the minutes of the time
seconds dc.w $0000 ; Buffer to hold the seconds of the time
-operator dc.b $0
+counter dc.w $0000 ; Counter for RTI ISR for 1 second
-numBuf dc.b $0
+numBuf dc.b $0000 ; Used by ReadDecimal for reading numbers
+
+operator dc.b $0000 ; Used by ReadDecimal for reading numbers
+
+inputBuffer ds.b $0010 ; Input Buffer Length
+
+lenInput dc.w $0010 ; Length of the Input Buffer
+
+outputBuf dc.b 'h' ; Used to control what to output on 7 segment display
*
* There is a section Data Section at the end of the file
@@ -119,17 +127,49 @@ pgstart lds #$3100 ; initialize the stack pointer
bset CRGINT,%10000000; enable RTI interrupt
bset CRGFLG,%10000000; clear RTI IF (Interrupt Flag)
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ ldy lenInput ; Load the length of inputBuffer into Y
+ jsr Zeros ; Zero out inputBuffer
cli ; Enable interrupts
+ jsr PrintTime ; Jump to PrintTime to write to serial console
mainLoop
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ ldy lenInput ; Load the length of inputBuffer into Y
+ jsr ReadString ; Jump to ReadString to read input
+
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ jsr ExecuteCommand ; Jump to ExecuteCommand
+
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ ldy lenInput ; Load the length of inputBuffer into Y
+ jsr Zeros ; Zero out inputBuffer
+
bra mainLoop ; Loop back to mainLoop always
+TypeWrite
+ sei ; Disable Interrupts
+ bclr CRGINT,%10000000; Disable RTI interrupt
+ ldx #twMsg ; Load the address of twMsg into X
+ jsr WriteString ; Write the string to the serial console
+twLoop jsr getchar ; Read a character from the serial console
+ tsta ; Compare A to 0
+ beq twLoop ; If A == 0, branch to twLoop
+ jsr putchar ; Write character to serial console
+ bra twLoop ; Branch always to twLoop
+
**************************************************************************
* Subroutine Section: address used [ $3100 to $3FFF ] RAM Memory
*
rtiisr bset CRGFLG,%10000000; Clear RTI Interrupt Flag
pshx ; Save X to the stack
- pshd ; Save D to the stack
+ ldx counter ; Load counter into X
+ inx ; Increment counter by 1
+ stx counter ; Save X to counter
+ cpx #9000 ; Compare counter to 9000, This is about 1 second on my computer
+ bne rtiSkip ; If counter != 400, branch to rtiSkip
+ ldx #0 ; Load 0 into X
+ stx counter ; Save X to counter
ldx seconds ; Load the seconds into X
inx ; Increment the seconds by 1
stx seconds ; Save the new seconds to the location
@@ -151,111 +191,108 @@ rtiisr bset CRGFLG,%10000000; Clear RTI Interrupt Flag
bne rtidone ; If X != 24, exit the isr
ldx #0 ; Reset the hours
stx hours ; Save the updated hours
-rtidone ldd hours ; Load the hours into D
- ldy #buffer ; Load the address of buffer into Y
+rtidone jsr PrintTime ; Jump to PrintTime
+rtiSkip pulx ; Restore X from the stack
+ RTI
+
+PrintTime pshd ; Save D to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save X to the stack
+ ldaa #CR ; Load the character CR into A
+ jsr putchar ; Write the character to the serial
+ ldaa #LF ; Load the character LF into A
+ jsr putchar ; Write the character to the serial
+ ldx #clock ; Load the address of the clock prompt into X
+ jsr WriteString ; Write the string to serial
+ ldd hours ; Load the hours into D
+ cpd #10 ; Compare D to 10
+ bhs goodHours ; If D >= goodHours
+ psha ; Save A to the stack
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print '0' to the serial
+ pula ; Restore A from the stack
+goodHours ldy #buffer ; Load the address of buffer into Y
jsr PrintDecimalWord; Print the number to the serial
ldaa #':' ; Load the character ':' into A
jsr putchar ; Write the character to the serial
ldd minutes ; Load the minutes into D
- ldy #buffer ; Load the address of buffer into Y
+ cpd #10 ; Compare D to 10
+ bhs goodMins ; If D >= goodMins
+ psha ; Save A to the stack
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print '0' to the serial
+ pula ; Restore A from the stack
+goodMins ldy #buffer ; Load the address of buffer into Y
jsr PrintDecimalWord; Print the number to the serial
ldaa #':' ; Load the character ':' into A
jsr putchar ; Write the character to the serial
ldd seconds ; Load the seconds into D
- ldy #buffer ; Load the address of buffer into Y
+ cpd #10 ; Compare D to 10
+ bhs goodSecs ; If D >= goodSecs
+ psha ; Save A to the stack
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print '0' to the serial
+ pula ; Restore A from the stack
+goodSecs ldy #buffer ; Load the address of buffer into Y
jsr PrintDecimalWord; Print the number to the serial
- ldaa #CR ; Load the character CR into A
- jsr putchar ; Write the character to the serial
- ldaa #LF ; Load the character LF into A
- jsr putchar ; Write the character to the serial
- puld ; Restore D from the stack
+ ldaa #' ' ; Load ' ' character into A
+ jsr putchar ; Write the character to the serial console
+ jsr putchar ; Write the character to the serial console
+ jsr putchar ; Write the character to the serial console
+ jsr putchar ; Write the character to the serial console
+ ldx #CMD ; Load the address of CMD into X
+ jsr WriteString ; Write the string to the serial
+ ldx #inputBuffer ; Load the address of the inputBuffer into X
+ jsr WriteString ; Write the string to the serial
pulx ; Restore X from the stack
- RTI
-
-;*************************************************************************
-; VerifyInput subroutine
-;
-; This subroutine will verify the user input is valid.
-;
-; Input: An address of a Null terminated string in register X.
-; Output: If valid Zero bit = 0 in CCR, if invalid, Zero bit = 1
-; and the string is outputed up to the error on the serial
-; console with an error message.
-; Registers in use: X for the address of the string, A for reading characters.
-; Y to count the number of digits in a number, & B to count the number of numbers
-; Memory locations in use: Memory Address for serial line, address of the string, 1 byte for operator
-;
-; Comments: This subroutine will modify the user string if invalid.
-;
-
-VerifyInput
- pshy ; Save Y to the stack
- pshd ; Save D to the stack
- pshx ; Save X to the stack
- clrb ; Set B to Zero
- stab operator ; Clear operator
- ldy #0 ; Load Zero into Y
-vNumLoop ldaa 1,x+ ; Load character from X into A
- cmpa #'9' ; Compare A to '9'
- bhi vInvalid ; If A > '9', not valid string
- cmpa #'0' ; Compare A to '0'
- blt vIsOp ; If A < '0', check if operator
- iny ; Increment Y by 1 to count numbers
- cpy #4 ; Compare Y to 4
- bhi vInvalid ; If greater than 4, invalid
- bra vNumLoop ; Loop back to check for more digits
-vIsOp cmpa #'+' ; Compare A to '+'
- beq vOp ; This is an operator
- cmpa #'-' ; Compare A to '-'
- beq vOp ; This is an operator
- cmpa #'*' ; Compare A to '*'
- beq vOp ; This is an operator
- cmpa #'/' ; Compare A to '/'
- beq vOp ; This is an operator
- cmpa #NULL ; Compare A to NULL character
- beq vEndOfLine ; Check if end of line
-vInvalid clra ; Set A to zero
- staa 0,X ; Write Null terminator to X
- pulx ; Restore X from the stack
- pshx ; Save X to the stack
- jsr WriteString ; Write invalid string to serial console
- ldaa #CR ; Load CR into A
- jsr putchar ; Jump to putchar to write the character
- ldaa #LF ; Load LF into A
- jsr putchar ; Jump to putchar to write the character
- ldx #invalidStr ; Load address of invalid string into X
- jsr WriteString ; Write invalid string to serial console
- ldaa #4 ; Load 4 into A to set zero bit
- tap ; Transfer A to CCR
- pulx ; Restore X from the stack
- puld ; Restore D from the stack
puly ; Restore Y from the stack
- rts ; Return to caller
-vOp staa operator ; Store operator in operator buffer
- ldaa -2,x ; Load previous character into A
- cmpa #'0' ; Compare A to '0'
- blt vInvalid ; Invalid string since previous is not number
- cmpa #'9' ; Compare A to '9'
- bhi vInvalid ; Invalid string since previous is not number
- addb #1 ; Increment B by 1
- cmpb #1 ; Compare B to 1
- bhi vInvalid ; Invalid string since B > 1 and we have another operator
- ldy #0 ; Set Y to 0
- bra vNumLoop ; Check for next number
-vEndOfLine ldaa -2,x ; Load previous character into A
- cmpa #'0' ; Compare A to '0'
- blt vInvalid ; Invalid string since previous is not number
- cmpa #'9' ; Compare A to '9'
- bhi vInvalid ; Invalid string since previous is not number
- ldaa operator ; Load operator character from buffer
- beq vInvalid ; If operator buffer is zero, invalid
- clra ; Set A to zero
- tap ; Transfer A to CCR
- pulx ; Restore X from the stack
puld ; Restore D from the stack
- puly ; Restore Y from the stack
rts ; Return to caller
+ExecuteCommand
+ pshd ; Save D to the stack
+ ldaa 1,x+ ; Load the character from X into A
+ beq ecDone ; If A == 0, jump to ecDone
+ cmpa #'t' ; Compare A to 't'
+ bne isH ; If A != 't', branch to isH
+ bra ecDone ; Branch to ecDone
+isH cmpa #'h' ; Compare A to 'h'
+ bne isM ; If A != 'h', branch to isM
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != CR, bad command
+ staa outputBuf ; Store A into outputBuf
+ bra ecDone ; Branch to ecDone
+isM cmpa #'m' ; Compare A to 'm'
+ bne isS ; If A != 'm', branch to isS
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != CR, bad command
+ staa outputBuf ; Store A into outputBuf
+ bra ecDone ; Branch to ecDone
+isS cmpa #'s' ; Compare A to 's'
+ bne isQ ; If A != 's', branch to isQ
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != CR, bad command
+ staa outputBuf ; Store A into outputBuf
+ bra ecDone ; Branch to ecDone
+isQ cmpa #'q' ; Compare A to 'q'
+ bne badCommand ; If A != 'q', branch to badCommand
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != NULL, branch to ecDone
+ jmp TypeWrite ; Jump to TypeWrite
+badCommand pshx ; Save X to the stack
+ ldx #error ; Load the address of the error prompt into X
+ jsr WriteString ; Jump to WriteString
+ ldx #badInput ; Load the address of badInput into X
+ jsr WriteString ; Jump to WriteString
+ pulx ; Restore X from stack
+ecDone puld ; Restore D from the stack
+ rts ; Return to caller
+
+
;*************************************************************************
; ReadDecimal subroutine
;
@@ -383,13 +420,7 @@ dDNotZero addb #'0' ; Add '0' to B to get ASCII Character
bra dPrintLoop ; Loop to hPrintLoop
dCheck cpd #0 ; Compare D to 0
bne dDNotZero ; If D != 0, branch back to hDNotZero
-dPrintDone puld ; Restore D from the stack
- pshd ; Save D to the stack
- cpd #10 ; Compare D to 10
- bge dNoZero ; If D >= 10, jump to dNoZero
- ldaa #'0' ; Load '0' character into A
- staa 1,+y ; Load the '0' character in A to Y and increment Y
-dNoZero ldaa operator ; Load operator into A to see if negative
+dPrintDone ldaa operator ; Load operator into A to see if negative
cmpa #'-' ; Compare A to '-'
bne dNotNeg ; If A != '-', jump to dNotNeg
staa 1,+y ; Save '-' into buffer
@@ -405,8 +436,6 @@ dNotNeg ldx #buffer2 ; Load the address of buffer2 in X
rts ; Return to caller
dIsZero ldaa #'0' ; Load '0' character into A
jsr putchar ; Print character to the screen
- ldaa #'0' ; Load '0' character into A
- jsr putchar ; Print character to the screen
puld ; Restore D (A:B) from the stack
puly ; Restore Y from the stack
pulx ; Restore X from the stack
@@ -554,24 +583,28 @@ getchar7 clra ; Set A to 0
* Data Section 2: address used [ $3100 to $3FFF ] RAM Memory
*
-invalidStr dc.b 'Invalid input format',CR,LF,NULL ; Invalid input error message
+invalidStr dc.b 'Invalid Input',CR,LF,NULL ; Invalid input error message
-prompt dc.b 'Ecalc> ',NULL ; Prompt string for calculator
+clock dc.b 'Clock> ',NULL ; Prompt string for clock
+
+CMD dc.b 'CMD> ',NULL ; Prompt string for CMD
+
+error dc.b 'Error> ',NULL ; Prompt string for errors
+
+badInput dc.b 'Invalid Input',CR,LF,NULL ; Invalid Input Prompt
overflow dc.b 'Overflow Error',CR,LF,NULL ; Overflow error message
+; twMsg: welcome message for typewrite
+twMsg dc.b 'Clock stopped and Typewrite program started.',CR,LF
+ dc.b 'You may type below.',CR,LF,NULL
+
; msg: this is the main option menu string
-msg dc.b 'Rules for Calculator:',CR,LF
- dc.b '1) Input positive decimal integer numbers only',CR,LF
- dc.b '2) Input and output maximum four digit numbers only',CR,LF
- dc.b '3) Valid operators are: +, -, *, and /',CR,LF
- dc.b '4) Input number with leading zero is OK',CR,LF
- dc.b '5) Input only two numbers and one operator in between, no spaces',CR,LF
- dc.b '6) Show Ecalc> prompt and echo print user keystrokes unltil Return key',CR,LF
- dc.b '7) Repeat print user input and print answer after the = sign',CR,LF
- dc.b '8) In case of an invalid input format, repeat print the user input until the error character',CR,LF
- dc.b '9) In case of an invalid input format, print error message on the next line: Invalid input format',CR,LF
- dc.b '10) Keep 16bit internal binary number format, detect and flag overflow error',CR,LF
- dc.b '11) Use integer division and truncate any fraction',CR,LF,NULL
+msg dc.b 'Commands:',CR,LF
+ dc.b 't: Set the time in format HH:MM:SS',CR,LF
+ dc.b 'h: Display the hours on the 7 segment displays',CR,LF
+ dc.b 'm: Display the minutes on the 7 segment displays',CR,LF
+ dc.b 's: Display the seconds on the 7 segment displays',CR,LF
+ dc.b 'q: Stop the clock and enter typewriter',CR,LF,NULL
end ; last line of the file
diff --git a/cmpen472_hw8McDonnell/bin/Project.abs b/cmpen472_hw8McDonnell/bin/Project.abs
index af94fce..4262f22 100644
--- a/cmpen472_hw8McDonnell/bin/Project.abs
+++ b/cmpen472_hw8McDonnell/bin/Project.abs
Binary files differ
diff --git a/cmpen472_hw8McDonnell/bin/Project.abs.phy b/cmpen472_hw8McDonnell/bin/Project.abs.phy
index 4fd2ee7..1871899 100644
--- a/cmpen472_hw8McDonnell/bin/Project.abs.phy
+++ b/cmpen472_hw8McDonnell/bin/Project.abs.phy
@@ -1,3 +1,3 @@
S0580000433A5C55736572735C4A61636F62204D63446F6E6E656C6C5C446F63756D656E74735C434D50454E2D3437322D48575C636D70656E3437325F6877384D63446F6E6E656C6C5C62696E5C50726F6A6563742E61627348
-S2060FFFF03123A7
+S2060FFFF0315D6D
S9030000FC
diff --git a/cmpen472_hw8McDonnell/bin/Project.abs.s19 b/cmpen472_hw8McDonnell/bin/Project.abs.s19
index d2070bd..049bddb 100644
--- a/cmpen472_hw8McDonnell/bin/Project.abs.s19
+++ b/cmpen472_hw8McDonnell/bin/Project.abs.s19
@@ -1,47 +1,38 @@
S0580000433A5C55736572735C4A61636F62204D63446F6E6E656C6C5C446F63756D656E74735C434D50454E2D3437322D48575C636D70656E3437325F6877384D63446F6E6E656C6C5C62696E5C50726F6A6563742E61627348
S123300000000000000000000000000000000000000010000000000000000000000000009C
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diff --git a/cmpen472_hw8McDonnell/bin/main.dbg b/cmpen472_hw8McDonnell/bin/main.dbg
index e946a3c..9467888 100644
--- a/cmpen472_hw8McDonnell/bin/main.dbg
+++ b/cmpen472_hw8McDonnell/bin/main.dbg
@@ -84,9 +84,17 @@ minutes dc.w $0000 ; Buffer to hold the minutes of the time
seconds dc.w $0000 ; Buffer to hold the seconds of the time
-operator dc.b $0
+counter dc.w $0000 ; Counter for RTI ISR for 1 second
-numBuf dc.b $0
+numBuf dc.b $0000 ; Used by ReadDecimal for reading numbers
+
+operator dc.b $0000 ; Used by ReadDecimal for reading numbers
+
+inputBuffer ds.b $0010 ; Input Buffer Length
+
+lenInput dc.w $0010 ; Length of the Input Buffer
+
+outputBuf dc.b 'h' ; Used to control what to output on 7 segment display
*
* There is a section Data Section at the end of the file
@@ -119,17 +127,49 @@ pgstart lds #$3100 ; initialize the stack pointer
bset CRGINT,%10000000; enable RTI interrupt
bset CRGFLG,%10000000; clear RTI IF (Interrupt Flag)
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ ldy lenInput ; Load the length of inputBuffer into Y
+ jsr Zeros ; Zero out inputBuffer
cli ; Enable interrupts
+ jsr PrintTime ; Jump to PrintTime to write to serial console
mainLoop
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ ldy lenInput ; Load the length of inputBuffer into Y
+ jsr ReadString ; Jump to ReadString to read input
+
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ jsr ExecuteCommand ; Jump to ExecuteCommand
+
+ ldx #inputBuffer ; Load the address of inputBuffer into X
+ ldy lenInput ; Load the length of inputBuffer into Y
+ jsr Zeros ; Zero out inputBuffer
+
bra mainLoop ; Loop back to mainLoop always
+TypeWrite
+ sei ; Disable Interrupts
+ bclr CRGINT,%10000000; Disable RTI interrupt
+ ldx #twMsg ; Load the address of twMsg into X
+ jsr WriteString ; Write the string to the serial console
+twLoop jsr getchar ; Read a character from the serial console
+ tsta ; Compare A to 0
+ beq twLoop ; If A == 0, branch to twLoop
+ jsr putchar ; Write character to serial console
+ bra twLoop ; Branch always to twLoop
+
**************************************************************************
* Subroutine Section: address used [ $3100 to $3FFF ] RAM Memory
*
rtiisr bset CRGFLG,%10000000; Clear RTI Interrupt Flag
pshx ; Save X to the stack
- pshd ; Save D to the stack
+ ldx counter ; Load counter into X
+ inx ; Increment counter by 1
+ stx counter ; Save X to counter
+ cpx #9000 ; Compare counter to 9000, This is about 1 second on my computer
+ bne rtiSkip ; If counter != 400, branch to rtiSkip
+ ldx #0 ; Load 0 into X
+ stx counter ; Save X to counter
ldx seconds ; Load the seconds into X
inx ; Increment the seconds by 1
stx seconds ; Save the new seconds to the location
@@ -151,111 +191,108 @@ rtiisr bset CRGFLG,%10000000; Clear RTI Interrupt Flag
bne rtidone ; If X != 24, exit the isr
ldx #0 ; Reset the hours
stx hours ; Save the updated hours
-rtidone ldd hours ; Load the hours into D
- ldy #buffer ; Load the address of buffer into Y
+rtidone jsr PrintTime ; Jump to PrintTime
+rtiSkip pulx ; Restore X from the stack
+ RTI
+
+PrintTime pshd ; Save D to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save X to the stack
+ ldaa #CR ; Load the character CR into A
+ jsr putchar ; Write the character to the serial
+ ldaa #LF ; Load the character LF into A
+ jsr putchar ; Write the character to the serial
+ ldx #clock ; Load the address of the clock prompt into X
+ jsr WriteString ; Write the string to serial
+ ldd hours ; Load the hours into D
+ cpd #10 ; Compare D to 10
+ bhs goodHours ; If D >= goodHours
+ psha ; Save A to the stack
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print '0' to the serial
+ pula ; Restore A from the stack
+goodHours ldy #buffer ; Load the address of buffer into Y
jsr PrintDecimalWord; Print the number to the serial
ldaa #':' ; Load the character ':' into A
jsr putchar ; Write the character to the serial
ldd minutes ; Load the minutes into D
- ldy #buffer ; Load the address of buffer into Y
+ cpd #10 ; Compare D to 10
+ bhs goodMins ; If D >= goodMins
+ psha ; Save A to the stack
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print '0' to the serial
+ pula ; Restore A from the stack
+goodMins ldy #buffer ; Load the address of buffer into Y
jsr PrintDecimalWord; Print the number to the serial
ldaa #':' ; Load the character ':' into A
jsr putchar ; Write the character to the serial
ldd seconds ; Load the seconds into D
- ldy #buffer ; Load the address of buffer into Y
+ cpd #10 ; Compare D to 10
+ bhs goodSecs ; If D >= goodSecs
+ psha ; Save A to the stack
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print '0' to the serial
+ pula ; Restore A from the stack
+goodSecs ldy #buffer ; Load the address of buffer into Y
jsr PrintDecimalWord; Print the number to the serial
- ldaa #CR ; Load the character CR into A
- jsr putchar ; Write the character to the serial
- ldaa #LF ; Load the character LF into A
- jsr putchar ; Write the character to the serial
- puld ; Restore D from the stack
+ ldaa #' ' ; Load ' ' character into A
+ jsr putchar ; Write the character to the serial console
+ jsr putchar ; Write the character to the serial console
+ jsr putchar ; Write the character to the serial console
+ jsr putchar ; Write the character to the serial console
+ ldx #CMD ; Load the address of CMD into X
+ jsr WriteString ; Write the string to the serial
+ ldx #inputBuffer ; Load the address of the inputBuffer into X
+ jsr WriteString ; Write the string to the serial
pulx ; Restore X from the stack
- RTI
-
-;*************************************************************************
-; VerifyInput subroutine
-;
-; This subroutine will verify the user input is valid.
-;
-; Input: An address of a Null terminated string in register X.
-; Output: If valid Zero bit = 0 in CCR, if invalid, Zero bit = 1
-; and the string is outputed up to the error on the serial
-; console with an error message.
-; Registers in use: X for the address of the string, A for reading characters.
-; Y to count the number of digits in a number, & B to count the number of numbers
-; Memory locations in use: Memory Address for serial line, address of the string, 1 byte for operator
-;
-; Comments: This subroutine will modify the user string if invalid.
-;
-
-VerifyInput
- pshy ; Save Y to the stack
- pshd ; Save D to the stack
- pshx ; Save X to the stack
- clrb ; Set B to Zero
- stab operator ; Clear operator
- ldy #0 ; Load Zero into Y
-vNumLoop ldaa 1,x+ ; Load character from X into A
- cmpa #'9' ; Compare A to '9'
- bhi vInvalid ; If A > '9', not valid string
- cmpa #'0' ; Compare A to '0'
- blt vIsOp ; If A < '0', check if operator
- iny ; Increment Y by 1 to count numbers
- cpy #4 ; Compare Y to 4
- bhi vInvalid ; If greater than 4, invalid
- bra vNumLoop ; Loop back to check for more digits
-vIsOp cmpa #'+' ; Compare A to '+'
- beq vOp ; This is an operator
- cmpa #'-' ; Compare A to '-'
- beq vOp ; This is an operator
- cmpa #'*' ; Compare A to '*'
- beq vOp ; This is an operator
- cmpa #'/' ; Compare A to '/'
- beq vOp ; This is an operator
- cmpa #NULL ; Compare A to NULL character
- beq vEndOfLine ; Check if end of line
-vInvalid clra ; Set A to zero
- staa 0,X ; Write Null terminator to X
- pulx ; Restore X from the stack
- pshx ; Save X to the stack
- jsr WriteString ; Write invalid string to serial console
- ldaa #CR ; Load CR into A
- jsr putchar ; Jump to putchar to write the character
- ldaa #LF ; Load LF into A
- jsr putchar ; Jump to putchar to write the character
- ldx #invalidStr ; Load address of invalid string into X
- jsr WriteString ; Write invalid string to serial console
- ldaa #4 ; Load 4 into A to set zero bit
- tap ; Transfer A to CCR
- pulx ; Restore X from the stack
- puld ; Restore D from the stack
puly ; Restore Y from the stack
- rts ; Return to caller
-vOp staa operator ; Store operator in operator buffer
- ldaa -2,x ; Load previous character into A
- cmpa #'0' ; Compare A to '0'
- blt vInvalid ; Invalid string since previous is not number
- cmpa #'9' ; Compare A to '9'
- bhi vInvalid ; Invalid string since previous is not number
- addb #1 ; Increment B by 1
- cmpb #1 ; Compare B to 1
- bhi vInvalid ; Invalid string since B > 1 and we have another operator
- ldy #0 ; Set Y to 0
- bra vNumLoop ; Check for next number
-vEndOfLine ldaa -2,x ; Load previous character into A
- cmpa #'0' ; Compare A to '0'
- blt vInvalid ; Invalid string since previous is not number
- cmpa #'9' ; Compare A to '9'
- bhi vInvalid ; Invalid string since previous is not number
- ldaa operator ; Load operator character from buffer
- beq vInvalid ; If operator buffer is zero, invalid
- clra ; Set A to zero
- tap ; Transfer A to CCR
- pulx ; Restore X from the stack
puld ; Restore D from the stack
- puly ; Restore Y from the stack
rts ; Return to caller
+ExecuteCommand
+ pshd ; Save D to the stack
+ ldaa 1,x+ ; Load the character from X into A
+ beq ecDone ; If A == 0, jump to ecDone
+ cmpa #'t' ; Compare A to 't'
+ bne isH ; If A != 't', branch to isH
+ bra ecDone ; Branch to ecDone
+isH cmpa #'h' ; Compare A to 'h'
+ bne isM ; If A != 'h', branch to isM
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != CR, bad command
+ staa outputBuf ; Store A into outputBuf
+ bra ecDone ; Branch to ecDone
+isM cmpa #'m' ; Compare A to 'm'
+ bne isS ; If A != 'm', branch to isS
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != CR, bad command
+ staa outputBuf ; Store A into outputBuf
+ bra ecDone ; Branch to ecDone
+isS cmpa #'s' ; Compare A to 's'
+ bne isQ ; If A != 's', branch to isQ
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != CR, bad command
+ staa outputBuf ; Store A into outputBuf
+ bra ecDone ; Branch to ecDone
+isQ cmpa #'q' ; Compare A to 'q'
+ bne badCommand ; If A != 'q', branch to badCommand
+ ldab 1,x+ ; Load next character into B
+ cmpb #NULL ; Compare B to NULL
+ bne badCommand ; If B != NULL, branch to ecDone
+ jmp TypeWrite ; Jump to TypeWrite
+badCommand pshx ; Save X to the stack
+ ldx #error ; Load the address of the error prompt into X
+ jsr WriteString ; Jump to WriteString
+ ldx #badInput ; Load the address of badInput into X
+ jsr WriteString ; Jump to WriteString
+ pulx ; Restore X from stack
+ecDone puld ; Restore D from the stack
+ rts ; Return to caller
+
+
;*************************************************************************
; ReadDecimal subroutine
;
@@ -383,13 +420,7 @@ dDNotZero addb #'0' ; Add '0' to B to get ASCII Character
bra dPrintLoop ; Loop to hPrintLoop
dCheck cpd #0 ; Compare D to 0
bne dDNotZero ; If D != 0, branch back to hDNotZero
-dPrintDone puld ; Restore D from the stack
- pshd ; Save D to the stack
- cpd #10 ; Compare D to 10
- bge dNoZero ; If D >= 10, jump to dNoZero
- ldaa #'0' ; Load '0' character into A
- staa 1,+y ; Load the '0' character in A to Y and increment Y
-dNoZero ldaa operator ; Load operator into A to see if negative
+dPrintDone ldaa operator ; Load operator into A to see if negative
cmpa #'-' ; Compare A to '-'
bne dNotNeg ; If A != '-', jump to dNotNeg
staa 1,+y ; Save '-' into buffer
@@ -405,8 +436,6 @@ dNotNeg ldx #buffer2 ; Load the address of buffer2 in X
rts ; Return to caller
dIsZero ldaa #'0' ; Load '0' character into A
jsr putchar ; Print character to the screen
- ldaa #'0' ; Load '0' character into A
- jsr putchar ; Print character to the screen
puld ; Restore D (A:B) from the stack
puly ; Restore Y from the stack
pulx ; Restore X from the stack
@@ -554,23 +583,27 @@ getchar7 clra ; Set A to 0
* Data Section 2: address used [ $3100 to $3FFF ] RAM Memory
*
-invalidStr dc.b 'Invalid input format',CR,LF,NULL ; Invalid input error message
+invalidStr dc.b 'Invalid Input',CR,LF,NULL ; Invalid input error message
-prompt dc.b 'Ecalc> ',NULL ; Prompt string for calculator
+clock dc.b 'Clock> ',NULL ; Prompt string for clock
+
+CMD dc.b 'CMD> ',NULL ; Prompt string for CMD
+
+error dc.b 'Error> ',NULL ; Prompt string for errors
+
+badInput dc.b 'Invalid Input',CR,LF,NULL ; Invalid Input Prompt
overflow dc.b 'Overflow Error',CR,LF,NULL ; Overflow error message
+; twMsg: welcome message for typewrite
+twMsg dc.b 'Clock stopped and Typewrite program started.',CR,LF
+ dc.b 'You may type below.',CR,LF,NULL
+
; msg: this is the main option menu string
-msg dc.b 'Rules for Calculator:',CR,LF
- dc.b '1) Input positive decimal integer numbers only',CR,LF
- dc.b '2) Input and output maximum four digit numbers only',CR,LF
- dc.b '3) Valid operators are: +, -, *, and /',CR,LF
- dc.b '4) Input number with leading zero is OK',CR,LF
- dc.b '5) Input only two numbers and one operator in between, no spaces',CR,LF
- dc.b '6) Show Ecalc> prompt and echo print user keystrokes unltil Return key',CR,LF
- dc.b '7) Repeat print user input and print answer after the = sign',CR,LF
- dc.b '8) In case of an invalid input format, repeat print the user input until the error character',CR,LF
- dc.b '9) In case of an invalid input format, print error message on the next line: Invalid input format',CR,LF
- dc.b '10) Keep 16bit internal binary number format, detect and flag overflow error',CR,LF
- dc.b '11) Use integer division and truncate any fraction',CR,LF,NULL
+msg dc.b 'Commands:',CR,LF
+ dc.b 't: Set the time in format HH:MM:SS',CR,LF
+ dc.b 'h: Display the hours on the 7 segment displays',CR,LF
+ dc.b 'm: Display the minutes on the 7 segment displays',CR,LF
+ dc.b 's: Display the seconds on the 7 segment displays',CR,LF
+ dc.b 'q: Stop the clock and enter typewriter',CR,LF,NULL
diff --git a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell.mcp b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell.mcp
index ce6cfc9..01ddcf5 100644
--- a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell.mcp
+++ b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell.mcp
Binary files differ
diff --git a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.o b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.o
index af94fce..4262f22 100644
--- a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.o
+++ b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.o
Binary files differ
diff --git a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.sx b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.sx
index 5482821..dbd40cb 100644
--- a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.sx
+++ b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/ObjectCode/main.asm.sx
@@ -1,47 +1,38 @@
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diff --git a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/TargetDataWindows.tdt b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/TargetDataWindows.tdt
index a624e60..88492b3 100644
--- a/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/TargetDataWindows.tdt
+++ b/cmpen472_hw8McDonnell/cmpen472_hw8McDonnell_Data/Standard/TargetDataWindows.tdt
Binary files differ
generated by cgit v1.2.3 (git 2.46.0) at 2026-05-15 12:25:52 +0000