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-rw-r--r--cmpen472hw12_McDonnell/Full_Chip_Simulation.ini2
-rw-r--r--cmpen472hw12_McDonnell/Sources/main.asm119
-rw-r--r--cmpen472hw12_McDonnell/bin/Project.absbin9806 -> 9930 bytes
-rw-r--r--cmpen472hw12_McDonnell/bin/Project.abs.s19107
-rw-r--r--cmpen472hw12_McDonnell/bin/main.dbg119
-rw-r--r--cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.obin9806 -> 9930 bytes
-rw-r--r--cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.sx107
-rw-r--r--cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/TargetDataWindows.tdtbin66972 -> 67011 bytes
8 files changed, 335 insertions, 119 deletions
diff --git a/cmpen472hw12_McDonnell/Full_Chip_Simulation.ini b/cmpen472hw12_McDonnell/Full_Chip_Simulation.ini
index bac998b..1cc384b 100644
--- a/cmpen472hw12_McDonnell/Full_Chip_Simulation.ini
+++ b/cmpen472hw12_McDonnell/Full_Chip_Simulation.ini
@@ -10,7 +10,7 @@ Target=sim
Layout=ASM_layout.hwl
LoadDialogOptions=AUTOERASEANDFLASH NORUNAFTERLOAD
CPU=HC12
-MainFrame=2,3,-1,-1,-1,-1,14,61,1834,1050
+MainFrame=0,1,-1,-1,-1,-1,14,61,1834,1050
Configuration=Full_Chip_Simulation.hwc
Statusbar=1
ShowToolbar=1
diff --git a/cmpen472hw12_McDonnell/Sources/main.asm b/cmpen472hw12_McDonnell/Sources/main.asm
index b2b5d0d..2e2b5e6 100644
--- a/cmpen472hw12_McDonnell/Sources/main.asm
+++ b/cmpen472hw12_McDonnell/Sources/main.asm
@@ -2,11 +2,11 @@
*
* Title: Memory Monitor
*
-* Objective: CMPEN 472 Homework 6
+* Objective: CMPEN 472 Homework 12
*
* Revision: V1.0
*
-* Date: Feb. 28, 2025
+* Date: APR. 25, 2025
*
* Programmer: Jacob McDonnell
*
@@ -29,8 +29,10 @@
*
* Observation: This program will prompt the user to print the contents of a
* memory location and to modify the location with hexadecimal or
-* decimal data. If the user wishes, they can type 'QUIT' to exit
-* the memory monitor and enter the type writer program.
+* decimal data. The user can also load in chunks of data and
+* print chunks of memory. If the user wishes, they can type
+* 'QUIT' to exit the memory monitor and enter the type writer
+* program.
*
* Note: ON CSM-12C128 board,
*
@@ -61,6 +63,7 @@ CR equ $0d ; carriage return, ASCII 'Return' key
LF equ $0a ; line feed, ASCII 'next line' character
NULL equ $00 ; NULL Terminator character
+*
**************************************************************************
* Data Section: address used [ $3000 to $30FF ] RAM Memory
*
@@ -77,6 +80,8 @@ buffer2 ds.b $0010 ; Array of 16 bytes for reading and reve
dc.b NULL ; NULL terminated
lenBuf2 dc.w $0010 ; length of buffer2
+charCount dc.b $00 ; Number of characters read by ReadHex
+
*
* There is a section Data Section at the end of the file
**************************************************************************
@@ -311,9 +316,15 @@ ReadHex
pshd ; Save D to the stack
ldy #0 ; Clear Y register
ldab 1,x+ ; Read character from X into B, add 1 to X
+ clra ; clear A accumulator
+ staa charCount ; Clear charCount
cmpb #'$' ; Compare B to '$'
bne rHError ; If B != '$', jump to error, not hex data
-rHLoop ldab 1,x+ ; Read Next character from X
+rHLoop inc charCount ; Increment charCount by 1
+ ldab charCount ; Load charCount into B
+ cmpb #5 ; At most 4 hex digits to read
+ bhi rHError ; If charCount > 5, error
+ ldab 1,x+ ; Read Next character from X
beq rHDone ; If B == 0, exit loop
cmpb #' ' ; Compare B to space character
beq rHDone ; If B == ' ', exit loop
@@ -343,6 +354,7 @@ rHAlpha cmpb #'A' ; Compare B to 'A' character
aby ; Add B to Y
bra rHLoop ; Branch always to rHLoop
rHDone clra ; clear A accumulator
+ staa charCount ; Clear charCount
tap ; Transfer A into CCR to clear zero bit
puld ; Restore D from the stack
rts ; Return to caller
@@ -351,6 +363,23 @@ rHError ldaa #4 ; Load 4 into A to set zero bit in CCR
puld ; Restore D from the stack
rts ; Return to caller
+;*************************************************************************
+; MDCommand subroutine
+;
+; This subroutine is the MD command for the user. This subroutine will take in
+; a memory address and a length of bytes, and will print the bytes starting at
+; that memory location in 16 byte line segments.
+;
+; Input: A memory address in register X & a length of bytes in Y
+; Output: The data in memory starting at the address in X in 16
+; byte line segments on the serial console.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine Requires PrintHexWord & PrintHexByte.
+;
+
MDCommand
pshx ; Save X to the stack
pshy ; Save Y to the stack
@@ -407,6 +436,25 @@ MDDone ldaa #CR ; Load CR into A
pulx ; Restore X from the stack
rts ; Return
+;*************************************************************************
+; LDCommand subroutine
+;
+; This subroutine is the LD command for the user. This subroutine will take in
+; a memory address and a length of bytes, and will take bytes entered by the
+; user and write them to memory.
+;
+; Input: A memory address in register X & a length of bytes in Y
+; Bytes of data entered by the user on the serial console.
+; Output: The data inputted into memory starting at the address in X.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine Requires PrintHexWord, ReadHexByte, & PrintHexByte.
+; This subroutine will stop reading once the inputted number of bytes
+; is read.
+;
+
LDCommand
pshx ; Save X to the stack
pshy ; Save Y to the stack
@@ -467,11 +515,38 @@ LDInvalid ldaa #CR ; Load CR into A
pulx ; Restore X from the stack
rts ; Return
+;*************************************************************************
+; GetCharLoop subroutine
+;
+; This subroutine will read a byte from input and will block until there is data
+; to read.
+;
+; Input: A byte entered on the serial console.
+; Output: That byte in register A.
+; Registers in use: A for the byte inputted by the user.
+; Memory locations in use: Memory Address for serial line
+;
+; Comments: This subroutine will block until the user inputs data.
+;
+
GetCharLoop
jsr getchar ; Read character from serial
beq GetCharLoop ; If 0, loop
rts ; Return
+;*************************************************************************
+; IsValidHex subroutine
+;
+; This subroutine set the zero bit if the given character is not valid hex.
+;
+; Input: An ASCII character in register A.
+; Output: Zero bit set if invalid hex. (Valid if '0' <= A <= '9' or 'A' <= A <= 'F')
+; Registers in use: A for the given character, CCR for output.
+; Memory locations in use: No memory locations used.
+;
+; Comments: This subroutine only validates upper case hex.
+;
+
IsValidHex
cmpa #'0' ; Compare A to '0'
blo InvalidHex ; A < '0', invalid
@@ -506,7 +581,13 @@ InvalidHex orcc #%00000100 ; Set the Zero Bit
ReadDecimal
pshd ; Save D to the stack
ldy #0 ; Clear Y register
-dHLoop ldab 1,x+ ; Read Next character from X
+ clrb ; Clear B
+ stab charCount ; Clear charCount
+dHLoop inc charCount ; Increment charCount by 1
+ ldab charCount ; Load charCount into B
+ cmpb #6 ; Compare to B to 6
+ bhi dHError ; B > 6, bad too many characters.
+ ldab 1,x+ ; Read Next character from X
beq dHDone ; If B == 0, exit loop
cmpb #' ' ; Compare B to space character
beq dHDone ; If B == ' ', exit loop
@@ -655,6 +736,19 @@ bPrintDone puld ; Restore D (A:B) from the stack
pulx ; Restore X from the stack
rts ; Return to caller
+;*************************************************************************
+; PrintHexByte subroutine
+;
+; This subroutine will print a given byte to serial in Hex format.
+;
+; Input: 1 byte of data in B
+; Output: Hex representation in ASCII on serial console
+; Registers in use: X for division, A and B for characters.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
PrintHexByte
pshd ; Save D to the stack
pshy ; Save Y to the stack
@@ -685,6 +779,19 @@ PrintDone jsr putchar ; Print character to serial
puld ; Restore D from the stack
rts ; Return
+;*************************************************************************
+; ReadHexByte subroutine
+;
+; This subroutine will read a hex byte from serial console into A.
+;
+; Input: 2 ASCII characters of Hex format on serial console.
+; Output: The data in register A.
+; Registers in use: A for characters and B for multiplication.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
ReadHexByte
cmpa #'A' ; Compare A to 'A'
blo RHBNotHex ; If A < 'A', decimal number
diff --git a/cmpen472hw12_McDonnell/bin/Project.abs b/cmpen472hw12_McDonnell/bin/Project.abs
index 38ecb85..3945048 100644
--- a/cmpen472hw12_McDonnell/bin/Project.abs
+++ b/cmpen472hw12_McDonnell/bin/Project.abs
Binary files differ
diff --git a/cmpen472hw12_McDonnell/bin/Project.abs.s19 b/cmpen472hw12_McDonnell/bin/Project.abs.s19
index 9e8e6c0..4b837f4 100644
--- a/cmpen472hw12_McDonnell/bin/Project.abs.s19
+++ b/cmpen472hw12_McDonnell/bin/Project.abs.s19
@@ -1,60 +1,61 @@
S0590000433A5C55736572735C4A61636F62204D63446F6E6E656C6C5C446F63756D656E74735C434D50454E2D3437322D48575C636D70656E343732687731325F4D63446F6E6E656C6C5C62696E5C50726F6A6563742E6162731C
S1233000000500000000000000000000000000000000000010000000000000000000000097
-S10B3020000000000000001094
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-S12331401635FB27FB1635F45A0120F4343BA6308157182700D181511827011A814D274DBA
+S10C302000000000000000100093
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+S12331203E1636138620163613CE3002FD30131635F0CE300216314C20DCCE366B1635E441
+S123314016361A27FB1636135A0120F4343BA6308157182700D181511827011A814D274D7A
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-S1233180E534CE3002FD30131635B630182000C4A630814F182600D5A6008124182600CD96
+S1233180E534CE3002FD30131635D530182000C4A630814F182600D5A6008124182600CD77
S12331A016328F182700B31540182000AAA6308144182600B8A6008124182600B016328F6A
S12331C018270096B7E43BA6301827009681201827FFF481241826008A0916328F18270036
-S12331E0823AB7C53B8D000225793A1632DA18200065A63081442675A6008124266F1632D4
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S9030000FC
diff --git a/cmpen472hw12_McDonnell/bin/main.dbg b/cmpen472hw12_McDonnell/bin/main.dbg
index 612030a..c62f7ac 100644
--- a/cmpen472hw12_McDonnell/bin/main.dbg
+++ b/cmpen472hw12_McDonnell/bin/main.dbg
@@ -2,11 +2,11 @@
*
* Title: Memory Monitor
*
-* Objective: CMPEN 472 Homework 6
+* Objective: CMPEN 472 Homework 12
*
* Revision: V1.0
*
-* Date: Feb. 28, 2025
+* Date: APR. 25, 2025
*
* Programmer: Jacob McDonnell
*
@@ -29,8 +29,10 @@
*
* Observation: This program will prompt the user to print the contents of a
* memory location and to modify the location with hexadecimal or
-* decimal data. If the user wishes, they can type 'QUIT' to exit
-* the memory monitor and enter the type writer program.
+* decimal data. The user can also load in chunks of data and
+* print chunks of memory. If the user wishes, they can type
+* 'QUIT' to exit the memory monitor and enter the type writer
+* program.
*
* Note: ON CSM-12C128 board,
*
@@ -61,6 +63,7 @@ CR equ $0d ; carriage return, ASCII 'Return' key
LF equ $0a ; line feed, ASCII 'next line' character
NULL equ $00 ; NULL Terminator character
+*
**************************************************************************
* Data Section: address used [ $3000 to $30FF ] RAM Memory
*
@@ -77,6 +80,8 @@ buffer2 ds.b $0010 ; Array of 16 bytes for reading and reve
dc.b NULL ; NULL terminated
lenBuf2 dc.w $0010 ; length of buffer2
+charCount dc.b $00 ; Number of characters read by ReadHex
+
*
* There is a section Data Section at the end of the file
**************************************************************************
@@ -311,9 +316,15 @@ ReadHex
pshd ; Save D to the stack
ldy #0 ; Clear Y register
ldab 1,x+ ; Read character from X into B, add 1 to X
+ clra ; clear A accumulator
+ staa charCount ; Clear charCount
cmpb #'$' ; Compare B to '$'
bne rHError ; If B != '$', jump to error, not hex data
-rHLoop ldab 1,x+ ; Read Next character from X
+rHLoop inc charCount ; Increment charCount by 1
+ ldab charCount ; Load charCount into B
+ cmpb #5 ; At most 4 hex digits to read
+ bhi rHError ; If charCount > 5, error
+ ldab 1,x+ ; Read Next character from X
beq rHDone ; If B == 0, exit loop
cmpb #' ' ; Compare B to space character
beq rHDone ; If B == ' ', exit loop
@@ -343,6 +354,7 @@ rHAlpha cmpb #'A' ; Compare B to 'A' character
aby ; Add B to Y
bra rHLoop ; Branch always to rHLoop
rHDone clra ; clear A accumulator
+ staa charCount ; Clear charCount
tap ; Transfer A into CCR to clear zero bit
puld ; Restore D from the stack
rts ; Return to caller
@@ -351,6 +363,23 @@ rHError ldaa #4 ; Load 4 into A to set zero bit in CCR
puld ; Restore D from the stack
rts ; Return to caller
+;*************************************************************************
+; MDCommand subroutine
+;
+; This subroutine is the MD command for the user. This subroutine will take in
+; a memory address and a length of bytes, and will print the bytes starting at
+; that memory location in 16 byte line segments.
+;
+; Input: A memory address in register X & a length of bytes in Y
+; Output: The data in memory starting at the address in X in 16
+; byte line segments on the serial console.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine Requires PrintHexWord & PrintHexByte.
+;
+
MDCommand
pshx ; Save X to the stack
pshy ; Save Y to the stack
@@ -407,6 +436,25 @@ MDDone ldaa #CR ; Load CR into A
pulx ; Restore X from the stack
rts ; Return
+;*************************************************************************
+; LDCommand subroutine
+;
+; This subroutine is the LD command for the user. This subroutine will take in
+; a memory address and a length of bytes, and will take bytes entered by the
+; user and write them to memory.
+;
+; Input: A memory address in register X & a length of bytes in Y
+; Bytes of data entered by the user on the serial console.
+; Output: The data inputted into memory starting at the address in X.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine Requires PrintHexWord, ReadHexByte, & PrintHexByte.
+; This subroutine will stop reading once the inputted number of bytes
+; is read.
+;
+
LDCommand
pshx ; Save X to the stack
pshy ; Save Y to the stack
@@ -467,11 +515,38 @@ LDInvalid ldaa #CR ; Load CR into A
pulx ; Restore X from the stack
rts ; Return
+;*************************************************************************
+; GetCharLoop subroutine
+;
+; This subroutine will read a byte from input and will block until there is data
+; to read.
+;
+; Input: A byte entered on the serial console.
+; Output: That byte in register A.
+; Registers in use: A for the byte inputted by the user.
+; Memory locations in use: Memory Address for serial line
+;
+; Comments: This subroutine will block until the user inputs data.
+;
+
GetCharLoop
jsr getchar ; Read character from serial
beq GetCharLoop ; If 0, loop
rts ; Return
+;*************************************************************************
+; IsValidHex subroutine
+;
+; This subroutine set the zero bit if the given character is not valid hex.
+;
+; Input: An ASCII character in register A.
+; Output: Zero bit set if invalid hex. (Valid if '0' <= A <= '9' or 'A' <= A <= 'F')
+; Registers in use: A for the given character, CCR for output.
+; Memory locations in use: No memory locations used.
+;
+; Comments: This subroutine only validates upper case hex.
+;
+
IsValidHex
cmpa #'0' ; Compare A to '0'
blo InvalidHex ; A < '0', invalid
@@ -506,7 +581,13 @@ InvalidHex orcc #%00000100 ; Set the Zero Bit
ReadDecimal
pshd ; Save D to the stack
ldy #0 ; Clear Y register
-dHLoop ldab 1,x+ ; Read Next character from X
+ clrb ; Clear B
+ stab charCount ; Clear charCount
+dHLoop inc charCount ; Increment charCount by 1
+ ldab charCount ; Load charCount into B
+ cmpb #6 ; Compare to B to 6
+ bhi dHError ; B > 6, bad too many characters.
+ ldab 1,x+ ; Read Next character from X
beq dHDone ; If B == 0, exit loop
cmpb #' ' ; Compare B to space character
beq dHDone ; If B == ' ', exit loop
@@ -655,6 +736,19 @@ bPrintDone puld ; Restore D (A:B) from the stack
pulx ; Restore X from the stack
rts ; Return to caller
+;*************************************************************************
+; PrintHexByte subroutine
+;
+; This subroutine will print a given byte to serial in Hex format.
+;
+; Input: 1 byte of data in B
+; Output: Hex representation in ASCII on serial console
+; Registers in use: X for division, A and B for characters.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
PrintHexByte
pshd ; Save D to the stack
pshy ; Save Y to the stack
@@ -685,6 +779,19 @@ PrintDone jsr putchar ; Print character to serial
puld ; Restore D from the stack
rts ; Return
+;*************************************************************************
+; ReadHexByte subroutine
+;
+; This subroutine will read a hex byte from serial console into A.
+;
+; Input: 2 ASCII characters of Hex format on serial console.
+; Output: The data in register A.
+; Registers in use: A for characters and B for multiplication.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
ReadHexByte
cmpa #'A' ; Compare A to 'A'
blo RHBNotHex ; If A < 'A', decimal number
diff --git a/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.o b/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.o
index 38ecb85..3945048 100644
--- a/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.o
+++ b/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.o
Binary files differ
diff --git a/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.sx b/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.sx
index da89c39..e53f5b0 100644
--- a/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.sx
+++ b/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/ObjectCode/main.asm.sx
@@ -1,60 +1,61 @@
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diff --git a/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/TargetDataWindows.tdt b/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/TargetDataWindows.tdt
index 966f494..21bc32d 100644
--- a/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/TargetDataWindows.tdt
+++ b/cmpen472hw12_McDonnell/cmpen472hw12_McDonnell_Data/Standard/TargetDataWindows.tdt
Binary files differ
generated by cgit v1.2.3 (git 2.46.0) at 2026-05-15 14:40:05 +0000