Assembly language program
Question:
Create two procedures: (1) SetColor receives two BYTE parameters: forecolor and backcolor. It calls the SetTextColor procedure from the Irvine32 library. (2) WriteColorChar receives three byte parameters: char, forecolor, and backcolor. It displays a single character, using the color attributes specified in forecolor and backcolor. It calls the SetColor procedure, and it also calls WriteChar from the Irvine32 library. Both SetColor and WriteColorChar must contain declared parameters. Complete the missing part of the code for the two procedures.
Code:
TITLE SetColor and WriteColorChar
INCLUDE Irvine32.inc
SetColor PROTO forecolor:BYTE, backcolor:BYTE
WriteColorChar PROTO char:BYTE,forecolor:BYTE, backcolor:BYTE
.data
.code
main PROC
INVOKE WriteColorChar, 'A', white, blue INVOKE WriteColorChar, 'B', blue, white INVOKE WriteColorChar, 'C', green, black INVOKE WriteColorChar, 'D', yellow, gray INVOKE SetColor, lightGray, black
call Crlf
exit main ENDP
WriteColorChar PROC ...
...
WriteColorChar ENDP
SetColor PROC ...
...
SetColor ENDP END main
Code:
SetColor PROTO forecolor:BYTE, backcolor:BYTE
WriteColorChar PROTO char:BYTE,forecolor:BYTE, backcolor:BYTE
.data
.code
main PROC
INVOKE WriteColorChar, 'A', white, blue
INVOKE WriteColorChar, 'B', blue, white
INVOKE WriteColorChar, 'C', green, black
INVOKE WriteColorChar, 'D', yellow, gray
INVOKE SetColor, lightGray, black
call Crlf
exit
main ENDP
WriteColorChar PROC
pop ebp ; pop the ebp from the stack
pop ecx ; pop the ecx reg. from the stack
pop ebx ; pop the ebx reg. from the stack
pop eax ; pop the eax reg. from the stack
push eax ; push Foreground onto the stack
push ebx ; push background onto the stack
push ecx ; push wChar onto the stack
call SetColor ; call SetColor
call WriteChar ; call WriteChar
ret
WriteColorChar ENDP
SetColor PROC
push ebp ; Save calling procedure base pointer
mov ebp, esp ; Set base pointer for this procedure
mov ecx, [ebp + 16] ; Retrieve colors
mov eax, [ebp + 12] ; from the stack
mov ebx, 16 ; foreColor + (backColor * 16 )
mul ebx
add ecx, eax
mov eax, ecx ; move ecx reg. into eax re.
call SetTextColor ; call SetTextColor to set the fore and back colors
mov eax, [ ebp + 8 ] ; retreive the char from the stack
pop ebp ; Restore base pointer for calling procedure
ret
SetColor ENDP
END main
I'm not familiar with INVOKE and PROTO directive, but I tried my best to make this program. I think I have not used the INVOKE function properly.
Error I get is A2111: Conflicting parameter definition |
