PsL Monthly 1993 December

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type assemb.mac ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; ASSEMBLE.MAC ;; ;; ;; ;; Sample macro library for the IBM PC Macro Assembler ;; ;; ;; ;; (C) Copyright 1983 ;; ;; by ;; ;; Jerry D. Stuckle ;; ;; ;; ;; Released to Public Domain ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Clear Macro R1,R2,R3,R4,R5,R6,R7,R8 ;;***************************************************************************;; ;; ;; ;; Macro: Clear ;; ;; ;; ;; Description: Clear registers ;; ;; ;; ;; Paramaters: Up to 8 registers to be cleared ;; ;; ;; ;; Input: N/A ;; ;; ;; ;; Output: Requested registers set to binary 0's ;; ;; ;; ;; Registers Used: None ;; ;; ;; ;;***************************************************************************;; Irp Rx,<R1,R2,R3,R4,R5,R6,R7,R8> ;Register list Ifnb <Rx> ;For each register in list Xor Rx,Rx ;Clear the register Endif ;End of Ifidn Endm ;End of Irp Endm ;Macro end Cls Macro Local Cls1,Clsd ;;***************************************************************************;; ;; ;; ;; Macro: Cls ;; ;; ;; ;; Description: Clear the display screen ;; ;; ;; ;; Paramaters: None ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX,DX ;; ;; ;; ;;***************************************************************************;; Display Clsd ;Display the Dos2 String Jmp Short Cls1 ;Go around the string data Clsd Db 1bh,'[2J$' ;Data for Dos Call Cls1 Label Near Endm Color Macro Foreground,Background Local Cold,Col1 ;;***************************************************************************;; ;; ;; ;; Macro: Color ;; ;; ;; ;; Description: Sets display color ;; ;; ;; ;; Paramaters: Foreground Color, Background Color ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX,DX ;; ;; ;; ;;***************************************************************************;; Display Cold ;Display the color string Jmp Short Col1 ;Go around the string Cold Db 1bh,'[' ;Start of string Ifidn <Foreground>,<Normal> ;If normal request Db '0' ;Normal Foreground Else Ifidn <Foreground>,<Bold> ;If Bold Request Db '1' ;Bold Foreground Else Ifidn <Foreground>,<Underscore> ;If Underscored Db '4' ;Underscore Foreground Else Ifidn <Foreground>,<Blink> ;If Blink request Db '5' ;Blink Foreground Else Ifidn <Foreground>,<Reverse> ;If Reverse request Db '7' ;Reverse Video Else Ifidn <Foreground>,<Invisible> ;If Invisable Request Db '8' ;Invisable (No-Show) Else Ifidn <Foreground>,<Black> ;If Black Request Db '30' ;Black Foreground Else Ifidn <Foreground>,<Red> ;If Red Request Db '31' ;Red Foreground Else Ifidn <Foreground>,<Green> ;If Green Request Db '32' ;Green Foreground Else Ifidn <Foreground>,<Yellow> ;If Yellow Request Db '33' ;Yellow Foreground Else Ifidn <Foreground>,<Blue> ;If Blue Request Db '34' ;Blue Foreground Else Ifidn <Foreground>,<Magenta> ;If Magenta Request Db '35' ;Magenta Foreground Else Ifidn <Foreground>,<Cyan> ;If Cyan Request Db '36' ;Cyan Foreground Else Ifidn <Foreground>,<White> ;If White Request Db '37' ;White Foreground Endif Endif Endif Endif Endif Endif Endif Endif Endif Endif Endif Endif Endif Endif Ifnb <Foreground> ;If we have foreground... Ifnb <Background> ;And background colors Db ';' ;Put in a Seperator Endif Endif Ifidn <Background>,<Black> ;If Black Request Db '40' ;Black Background Else Ifidn <Background>,<Red> ;If Red Request Db '41' ;Red Background Else Ifidn <Background>,<Green> ;If Green Request Db '42' ;Green Background Else Ifidn <Background>,<Yellow> ;If Yellow Request Db '43' ;Yellow Background Else Ifidn <Background>,<Blue> ;If Blue Request Db '44' ;Blue Background Else Ifidn <Background>,<Magenta> ;If Magenta Request Db '45' ;Magenta Background Else Ifidn <Background>,<Cyan> ;If Cyan Request Db '46' ;Cyan Background Else Ifidn <Background>,<White> ;If White Request Db '47' ;White Background Endif Endif Endif Endif Endif Endif Endif Endif Col1 Label Near ;Skip around data Endm Cursor Macro Function,Area ;;***************************************************************************;; ;; ;; ;; Macro: Cursor ;; ;; ;; ;; Description: Save or set current cursor type, blank cursor on screen ;; ;; ;; ;; Paramaters: Function (Save,Set or Erase), Data or Data address ;; ;; ;; ;; Input: Cursor start and end lines (Set only) ;; ;; ;; ;; Output: Cursor start and end lines (Save only) ;; ;; ;; ;; Registers Used: AX,CX (DS used and restored) ;; ;; ;; ;;***************************************************************************;; Ifidn <Function>,<Erase> ;If cursor erase requested Mov AH,1 ;Set cursor mode Mov CX,0F0FH ;Start and end on line 15 Int 10h ;Go do a video interrupt Else Ifidn <Function>,<Save> ;If cursor save request Push DS ;Save DS Mov AX,40h ;Get segment 40h in AX Mov DS,AX ;And put it in DS Mov CX,DS:60h ;Get current cursor mode Pop DS ;Restore DS Mov Area,CX ;And move cursor mode to Area Else Ifidn <Function>,<Set> ;If cursor set request Mov CX,Area ;Get cursor mode in CX Mov AH,1 ;Set cursor mode Int 10h ;Go do video interrupt Endif Endif Endif Endm Cvd Macro Dest,Org Local Cvbp,Cvde ;;***************************************************************************;; ;; ;; ;; Macro: Cvd ;; ;; ;; ;; Description: Convert binary number to Ascii decimal number ;; ;; ;; ;; Paramaters: Output Label, Input Label ;; ;; ;; ;; Input: Word binary number ;; ;; ;; ;; Output: 4 Byte decimal number ;; ;; ;; ;; Registers Used: AX,BX,DX,DI ;; ;; ;; ;;***************************************************************************;; Ifdif <Org>,<AX> ;If binary value not in AX Mov AX,Word ptr Org ;Move origin to AX Endif Lea DI,Dest ;Get address of destination Mov BL,100d ;Divisor to BL Div BL ;Divide by 100 Mov BH,AH ;Save remainder in BH Call Cvdp ;Convert highorder to decimal Mov AL,BH ;Get remainder Call Cvdp ;Convert low order to decimal Jmp Short Cvde ;Jump around proc Cvdp Proc Near Aam ;Convert to packed decimal Or AX,3030h ;Convert to Ascii Mov [DI],AH ;Store high order byte Inc DI ;Point to next byte Mov [DI],AL ;Store low order byte Inc DI ;Point to next byte Ret ;Return to caller Cvdp Endp Cvde Label Near Endm Display Macro String ;;***************************************************************************;; ;; ;; ;; Macro: Display ;; ;; ;; ;; Description: Print an ascii string on the screen ;; ;; ;; ;; Paramaters: Label of string to be printed ;; ;; ;; ;; Input: Ascii string, ending with a $ ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX,DX ;; ;; ;; ;;***************************************************************************;; Lea DX,String ;Address of string to display Doscall 9 ;Dos Print string function Endm Doscall Macro Function ;;***************************************************************************;; ;; ;; ;; Macro: Doscall ;; ;; ;; ;; Description: Set up and execute requested DOS function call ;; ;; ;; ;; Paramaters: Function to be called ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX ;; ;; ;; ;;***************************************************************************;; Mov AH,Function ;Get function in AH Int 21h ;Dos Call Endm Getdate Macro Dest,Type Local Gdte,Gtdp ;;***************************************************************************;; ;; ;; ;; Macro: Getdate ;; ;; ;; ;; Description: Gets current date into destination ;; ;; ;; ;; Paramaters: Destination, Type of date (Char or Bin) ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: MM/DD/YY (Char) or MDYY (Bin) ;; ;; ;; ;; Registers Used: AX,BX,CX,DX,DI ;; ;; ;; ;;***************************************************************************;; Ifidn <Type>,<Char> ;If character request Doscall 2Ah ;Get date function call Lea DI,Dest ;Get address of destination Mov AL,DH ;Get month in AL Call Gdtp ;Convert byte to ascii Mov Word ptr [DI],'/' ;Move in / Inc DI ;Point to next byte Mov AL,DL ;Get day in AL Call Gdtp ;Convert byte to ascii Mov Word ptr [DI],'/' ;Move in / Inc DI ;Point to next byte Mov AX,CX ;Get year in AL Mov BL,100d ;Move in divisor Div BL ;Divide by 100 Mov AL,AH ;Remainder to AL Call Gdtp ;Convert byte to Ascii Jmp Short Gdte ;Jump around proc Gdtp Proc Near AAM ;Convert to packed decimal Add AX,3030h ;Convert to ASCII Mov Byte ptr [DI],AH ;Store high order byte Inc DI ;Point to next byte Mov Byte Ptr [DI],AL ;Store low order byte Inc DI ;Point to next byte Ret ;Return to caller Gdtp Endp Gdte Label Near Else Ifidn <Type>,<Bin> ;If Binary request Doscall 2Ah ;Get current date Mov Byte ptr Dest,DH ;Move month to destination Mov Byte ptr [Dest+1],DL ;Move dat to destination Mov Word ptr [Dest+2],CX ;Move year to destination Endif Endif Endm Gettime Macro Dest,Type Local Gtmp,Gtme ;;***************************************************************************;; ;; ;; ;; Macro: Gettime ;; ;; ;; ;; Description: Get current time into Destination ;; ;; ;; ;; Paramaters: Destination, Type (Char or Bin) ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: HH:MM:SS:HH (Char) or HMSH (Bin) ;; ;; ;; ;; Registers Used: AX,BX,CX,DX,DI ;; ;; ;; ;;***************************************************************************;; Ifidn <Type>,<Char> ;If character request Doscall 2Ch ;Get current time Lea DI,Dest ;Get destination address Mov AL,CH ;Move hours to AL Call Gtmp ;And convert to ASCII Mov Word ptr [DI],':' ;Put in : Inc DI ;Point to next byte Mov AL,CL ;Move minutes to AL Call Gtmp ;And convert to ASCII Mov Word ptr [DI],':' ;Put in : Inc DI ;Point to next byte Mov AL,DH ;Move seconds to AL Call Gtmp ;And convert to ASCII Mov Word ptr [DI],':' ;Put in : Inc DI ;Point to next byte Mov AL,DL ;Move hundreths to AL Call Gtmp ;And convert to ASCII Jmp Short Gtme ;Jump around proc Gtmp Proc Near AAM ;Convert to packed decimal Add AX,3030h ;Convert to ASCII Mov Byte ptr [DI],AH ;Store high order byte Inc DI ;Point to next byte Mov Byte Ptr [DI],AL ;Store low order byte Inc DI ;Point to next byte Ret ;Return to caller Gtmp Endp Gtme Label Near Else Ifidn <Type>,<Bin> ;If request for Binary time Doscall 2Ch ;Get current time Mov Byte ptr Dest,CH ;Move hours to destination Mov Byte ptr Dest+1,CL ;Move minutes to destination Mov Byte ptr Dest+2,DH ;Move seconds to destination Mov Byte ptr Dest+3,DL ;Move hundreths to destination Endif Endif Endm Locate Macro Row,Column Local Loc1,Locd ;;***************************************************************************;; ;; ;; ;; Macro: Locate ;; ;; ;; ;; Description: Position Cursor on screen ;; ;; ;; ;; Paramaters: Row, Column ;; ;; ;; ;; Input: Binary row and column location, if not in macro call ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX,DX ;; ;; ;; ;;***************************************************************************;; Mov AL,Row ;Get binary row Aam ;Convert to packed decimal Add AX,3030h ;Convert to Ascii Mov Byte Ptr [Locd+2],AH ;High order row to string Mov Byte Ptr [Locd+3],AL ;Low order row to string Clear AH ;Clear AH again Mov AL,Column ;Get column in AL Aam ;Convert to packed decimal Add AX,3030h ;Convert to Ascii Mov Byte Ptr [Locd+5],AH ;High order column to string Mov Byte Ptr [Locd+6],AL ;Low order column ti string Display Locd ;Position the cursor Jmp Short Loc1 ;Jump around string Locd Db 1bh,'[ ; H$' ;Position cursor string Loc1 Label Near Endm Move Macro To,From,Lngth Local Movelp ;;***************************************************************************;; ;; ;; ;; Macro: Move ;; ;; ;; ;; Description: Multiple byte move ;; ;; ;; ;; Paramaters: To location, from location, Length (Opt.) ;; ;; ;; ;; Input: Source string ;; ;; ;; ;; Output: Destination string ;; ;; ;; ;; Registers Used: CX,SI,DI (ES assumed pointing to destination segment) ;; ;; ;; ;;***************************************************************************;; Clear CH ;Clear length reg Ifb <Length> ;If no length requested Mov CX,Length To ;Use length of to string Else ;If length requested Mov CX,Lngth ;Use length in macro Endif Ifdif <To>,<DI> ;If DI not specified for To Lea DI,To ;Load To address into DI Endif Ifdif <From>,<SI> ;If SI not specified for From Lea SI,From ;Load From address into SI Endif Cld ;Clear direction flag Rep Movsb ;Move the data Endm Restore Macro R1,R2,R3,R4,R5,R6,R7,R8,R9,R10 ;;***************************************************************************;; ;; ;; ;; Macro: Restore ;; ;; ;; ;; Description: Restore registers from stack ;; ;; ;; ;; Paramaters: Registers to be restored (in reverse order) ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: Restored registers ;; ;; ;; ;; Registers Used: None ;; ;; ;; ;;***************************************************************************;; Irp Rx,<R10,R9,R8,R7,R6,R5,R4,R3,R2,R1> ;Repeat for each parm Ifnb <Rx> ;If this parm not blank Pop Rx ;Pop the register Endif ;End Ifnb Endm ;End Irp Endm Save Macro R1,R2,R3,R4,R5,R6,R7,R8,R9,R10 ;;***************************************************************************;; ;; ;; ;; Macro: Save ;; ;; ;; ;; Description: Save registers on the stack ;; ;; ;; ;; Paramaters: Registers to be saved ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: Registers saved on stack ;; ;; ;; ;; Registers Used: None ;; ;; ;; ;;***************************************************************************;; Irp Rx,<R1,R2,R3,R4,R5,R6,R7,R8,R9,R10> ;Repeat for each parm Ifnb <Rx> ;If this parm not blank Push Rx ;Save the register Endif ;End Ifnb Endm ;End Irp Endm Setint Macro Interrupt,Routine ;;***************************************************************************;; ;; ;; ;; Macro: Setint ;; ;; ;; ;; Description: Set interrupt vector ;; ;; ;; ;; Paramaters: Interrupt vector, interrupt routine address ;; ;; ;; ;; Input: None ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX,DX ;; ;; ;; ;;***************************************************************************;; Mov AL,Interrupt ;Get interrupt to be set Lea DX,Routine ;Get address of routine Doscall 25h ;Call DOS Endm Settime Macro Hours,Minutes,Seconds,Hundreths ;;***************************************************************************;; ;; ;; ;; Macro: Settime ;; ;; ;; ;; Description: Set current time ;; ;; ;; ;; Paramaters: Hours, Minutes, Seconds,Hundreths ;; ;; ;; ;; Input: Time to be set ;; ;; ;; ;; Output: None ;; ;; ;; ;; Registers Used: AX,CX,DX ;; ;; ;; ;;***************************************************************************;; Ifnb <Hours> ;If hours specified Mov CH,Hours ;Move hours to CH Else ;If hours not specified Clear CH ;Clear CH Endif Ifnb <Minutes> ;If minutes specified Mov CL,Minutes ;Move minutes to CL Else ;If minutes not specified Clear CL ;Clear CL Endif Ifnb <Seconds> ;If seconds specified Mov DH,Seconds ;Move seconds to DH Else ;If seconds not specified Clear DH ;Clear DH Endif Ifnb <Hundreths> ;If hundreths specified Mov DL,Hundreths ;Move hundreths to DL Else ;If hndreths not specified Clear DL ;Clear DL Endif Doscall 2dh ;Call DOS to set time Endm XA 4: ;Clear DL Endif Do