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main.asm
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main.asm
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;; Author: Kylee Fields
;; Description: A table that changes colors based on user input (Assembly language.)
INCLUDE Irvine32.inc
INCLUDELIB Irvine32.lib
.386
.model flat, stdcall
.stack 4096
ExitProcess PROTO, dwExitCode:DWORD
.data
; strings for labeling bits
sevenString db " 7 ", 0
sixString db " 6 ", 0
fiveString db " 5 ", 0
fourString db " 4 ", 0
threeString db " 3 ", 0
twoString db " 2 ", 0
oneString db " 1 ", 0
zeroString db " 0 ", 0
bitString db " 0 ", 0
bitOneString db " 1 ", 0
; table lines & spaces
splitLine db 186d , 0
midT db 206d, 0
splitDash db 205d, 0
topT db 203d, 0
bottomT db 202d, 0
; phrasing
positionString db " BIT POSITION ", 0
codeString db " BIT CODE ", 0
directionString db "Please press a corresponding key for the bit that you would like to cycle...", 0dh, 0ah, 0
press0 db "Press the '0' key to shift the bit in position 0.", 0dh, 0ah, 0
press1 db "Press the '1' key to shift the bit in position 1.", 0dh, 0ah, 0
press2 db "Press the '2' key to shift the bit in position 2.", 0dh, 0ah, 0
press3 db "Press the '3' key to shift the bit in position 3.", 0dh, 0ah, 0
press4 db "Press the '4' key to shift the bit in position 4.", 0dh, 0ah, 0
press5 db "Press the '5' key to shift the bit in position 5.", 0dh, 0ah, 0
press6 db "Press the '6' key to shift the bit in position 6.", 0dh, 0ah, 0
press7 db "Press the '7' key to shift the bit in position 7.", 0dh, 0ah, 0
wrongInput db "Sorry, you entered invalid input.", 0dh, 0ah, 0
; array for printing bit labels on top row
positionArray DWORD OFFSET splitLine, OFFSET positionString, OFFSET splitLine, OFFSET sevenString, OFFSET splitLine, OFFSET sixString, OFFSET splitLine, OFFSET fiveString, OFFSET splitLine, OFFSET fourString, OFFSET splitLine, OFFSET threeString, OFFSET splitLine, OFFSET twoString, OFFSET splitLine, OFFSET oneString, OFFSET splitLine, OFFSET zeroString, OFFSET splitLine
; colors
lightcyan = 00001011b
green = 00000010b
lightred = 00001100b
magenta = 00001101b
white = 00001111b
arrayColors BYTE lightcyan, lightcyan, magenta, magenta, green, green, lightred, lightred, white, white
; counters for individual bits
zeroCounter BYTE 0
oneCounter BYTE 0
twoCounter BYTE 0
threeCounter BYTE 0
fourCounter BYTE 0
fiveCounter BYTE 0
sixCounter BYTE 0
sevenCounter BYTE 0
.code
main PROC
; clear screen fast
call reScr
; draw table
call drawTable
; print directions
call directions
; get input & update table
call getInput
INVOKE ExitProcess, 0
main ENDP
; main functions
reScr PROC
push edx
mov dh, 0
mov dl, 0
call GotoXY ;faster clear screen by resetting cursor
pop edx
ret
reScr ENDP
directions PROC
push edx
call crlf
mov edx, OFFSET directionString
call WriteString
mov edx, OFFSET press0
call WriteString
mov edx, OFFSET press1
call WriteString
mov edx, OFFSET press2
call WriteString
mov edx, OFFSET press3
call WriteString
mov edx, OFFSET press4
call WriteString
mov edx, OFFSET press5
call WriteString
mov edx, OFFSET press6
call WriteString
mov edx, OFFSET press7
call WriteString
pop edx
ret
directions ENDP
getInput PROC
call ReadChar ; read as chars to avoid echo
cmp al, '0' ; delegates inc to appropriate bit based on input
jz incZero
cmp al, '1'
jz incOne
cmp al, '2'
jz incTwo
cmp al, '3'
jz incThree
cmp al, '4'
jz incFour
cmp al, '5'
jz incFive
cmp al, '6'
jz incSix
cmp al, '7'
jz incSeven
jmp invalid ; user validation
invalid:
mov edx, OFFSET wrongInput
call WriteString
call getInput
getInput ENDP
drawTable PROC
call drawTop
call bytePosition
call drawMiddle
call byteCode
call drawBottom
ret
drawTable ENDP
; functions for handling bit counters
; called by getInput
; inc or reset based on color index
; dec cx main prevents memory limits when calling to main
incZero PROC
inc zeroCounter
cmp zeroCounter, 10
jz reset0
dec cx
call main
reset0:
mov zeroCounter, 0
dec cx
call main
incZero ENDP
incOne PROC
inc oneCounter
cmp oneCounter, 10
jz reset1
dec cx
call main
reset1:
mov oneCounter, 0
dec cx
call main
incOne ENDP
incTwo PROC
inc twoCounter
cmp twoCounter, 10
jz reset2
dec cx
call main
reset2:
mov twoCounter, 0
dec cx
call main
incTwo ENDP
incThree PROC
inc threeCounter
cmp threeCounter, 10
jz reset3
dec cx
call main
reset3:
mov threeCounter, 0
dec cx
call main
incThree ENDP
incFour PROC
inc fourCounter
cmp fourCounter, 10
jz reset4
dec cx
call main
reset4:
mov fourCounter, 0
dec cx
call main
incFour ENDP
incFive PROC
inc fiveCounter
cmp fiveCounter, 10
jz reset5
dec cx
call main
reset5:
mov fiveCounter, 0
dec cx
call main
incFive ENDP
incSix PROC
inc sixCounter
cmp sixCounter, 10
jz reset6
dec cx
call main
reset6:
mov sixCounter, 0
dec cx
call main
incSix ENDP
incSeven PROC
inc sevenCounter
cmp sevenCounter, 10
jz reset7
dec cx
call main
reset7:
mov sevenCounter, 0
dec cx
call main
incSeven ENDP
; helper functions for formatting
printSplitLine PROC
; prints vertical formatting lines
push edx
mov edx, offset splitLine
call WriteString
pop edx
ret
printSplitLine ENDP
printSplitDashRow PROC
; prints row of horizontal lines
push ecx
push edx
mov cx,5
do5:
mov edx, OFFSET splitDash
call WriteString
dec cx
jnz do5
pop ecx
pop edx
ret
printSplitDashRow ENDP
printTopT PROC
; prints vertical lines to divide top row
push edx
mov edx, OFFSET topT
call WriteString
pop edx
ret
printTopT ENDP
printmidT PROC
; prints cross-shaped lines to format middle row
push edx
mov edx, OFFSET midT
call WriteString
pop edx
ret
printmidT ENDP
printBottomT PROC
; prints vertical lines to format bottom row
push edx
mov edx, OFFSET bottomT
call WriteString
pop edx
ret
printBottomT ENDP
; functions for formatting
drawTop PROC
; prints top row lines
push ecx
push edx
call printTopT
mov cx, 14
topLabel:
mov edx, OFFSET splitDash
call WriteString
dec cx
jnz topLabel
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call printSplitDashRow
call printTopT
call crlf
pop ecx
pop edx
ret
drawTop ENDP
drawMiddle PROC
; prints middle row lines
push ecx
push edx
call printmidT
mov cx, 14
midLabel:
mov edx, OFFSET splitDash
call WriteString
dec cx
jnz midLabel
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call printSplitDashRow
call printmidT
call crlf
pop ecx
pop edx
ret
drawMiddle ENDP
drawBottom PROC
; prints bottom row lines
push ecx
push edx
call printBottomT
mov cx, 14
bottomLabel:
mov edx, OFFSET splitDash
call WriteString
dec cx
jnz bottomLabel
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call printSplitDashRow
call printBottomT
call crlf
pop ecx
pop edx
ret
drawBottom ENDP
; functions for printing bit labels
; and values into table
bytePosition PROC
; prints bit labels on top row
; via indexing through positionArray
push ecx
push edx
mov ecx, 0
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 1
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 2
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 3
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 4
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 5
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 6
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 7
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 8
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 9
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 10
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 11
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 12
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 13
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 14
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 15
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 16
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 17
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
mov ecx, 18
lea edx, [positionArray + ecx * 4]
mov edx, [edx]
call WriteString
call Crlf
pop ecx
pop edx
ret
bytePosition ENDP
byteCode PROC
; prints bits on bottom row
push edx
call printSplitLine
mov edx, OFFSET codeString
call WriteString
call printSplitLine
call sevenBit
call printSplitLine
call sixBit
call printSplitLine
call fifthBit
call printSplitLine
call fourthBit
call printSplitLine
call thirdBit
call printSplitLine
call secondBit
call printSplitLine
call firstBit
call printSplitLine
call zeroBit
call printSplitLine
call crlf
pop edx
ret
byteCode ENDP
; functions for altering specific bits
; changes 0<->1 & color
; more comments found under zeroBit
zeroBit PROC
push eax
push esi
push ebx
push edx
mov eax, 0
movzx esi, zeroCounter ;applies color based on count
mov al, arrayColors[ESI]
call SetTextColor
mov bx,2
movzx ax, zeroCounter
mov dx, 0
div bx
cmp dx,0 ;determines if even or odd
JE even0 ;if even, print 0
JNE odd0 ;if odd, print 1
even0:
mov edx, OFFSET bitString
call WriteString
mov al, white ;return to default color
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
odd0:
mov edx, offset bitOneString
call writeString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
zeroBit ENDP
firstBit PROC
push eax
push esi
push ebx
push edx
mov eax, 0
movzx esi, oneCounter
mov al, arrayColors[ESI]
call SetTextColor
mov bx,2
movzx ax, oneCounter
mov dx, 0
div bx
cmp dx, 0
JE even1
JNE odd1
even1:
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
odd1:
mov edx, offset bitOneString
call writeString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
firstBit ENDP
secondBit PROC
push eax
push esi
push ebx
push edx
mov eax, 0
movzx esi, twoCounter
mov al, arrayColors[ESI]
call SetTextColor
mov bx,2
movzx ax, twoCounter
mov dx, 0
div bx
cmp dx, 0
JE even2
JNE odd2
even2:
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
odd2:
mov edx, offset bitOneString
call writeString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
secondBit ENDP
thirdBit PROC
push eax
push esi
push ebx
push edx
mov eax, 0
movzx esi, threeCounter
mov al, arrayColors[ESI]
call SetTextColor
mov bx,2
movzx ax, threeCounter
mov dx, 0
div bx
cmp dx, 0
JE even3
JNE odd3
even3:
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
odd3:
mov edx, offset bitOneString
call writeString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
thirdBit ENDP
fourthBit PROC
push eax
push esi
push ebx
push edx
mov eax, 0
movzx esi, fourCounter
mov al, arrayColors[ESI]
call SetTextColor
mov bx,2
movzx ax, fourCounter
mov dx, 0
div bx
cmp dx, 0
JE even4
JNE odd4
even4:
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
odd4:
mov edx, offset bitOneString
call writeString
mov al, white
call SetTextColor
pop eax
pop esi
pop ebx
pop edx
ret
fourthBit ENDP
fifthBit PROC
push eax
push edx
push esi
mov eax, 0
movzx esi, fiveCounter
mov al, arrayColors[ESI]
call SetTextColor
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop ecx
pop esi
ret
fifthBit ENDP
sixBit PROC
push eax
push edx
push esi
mov eax, 0
movzx esi, sixCounter
mov al, arrayColors[ESI]
call SetTextColor
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop ecx
pop esi
ret
sixBit ENDP
sevenBit PROC
push eax
push edx
push esi
mov eax, 0
movzx esi, sevenCounter
mov al, arrayColors[ESI]
call SetTextColor
mov edx, OFFSET bitString
call WriteString
mov al, white
call SetTextColor
pop eax
pop ecx
pop esi
ret
sevenBit ENDP
END main