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Assembly Source File | 1989-03-06 | 40.8 KB | 1,355 lines

;============================================================================= ; SETUP 2.0 allows text and control codes to be sent directly to a printer ; from the command line or from within a popup menu window. Syntax is: ; ; SETUP2 [d:][path][filename] | [/C codes] | [/U] ; ; where filename = Name of PMF file ; /C = Codes to be sent from the command line ; /U = Uninstall the program ;============================================================================= code segment para public 'code' assume cs:code org 100h begin: jmp initialize program db "SETUP 2.0 " copyright db "(c) 1989 Ziff Communications Co.",13,10 author db "PC Magazine ",254," Jeff Prosise",13,10 hotkey db "Hotkey is Ctrl-Rt/Shift",13,10,"$",1Ah videocols db ? ;number of columns displayed videopage db ? ;active video page videoseg dw ? ;video segment videostart dw ? ;starting video address videocursormode dw ? ;cursor description videocursorpos dw ? ;BIOS cursor position pname db 26 dup (20h) ;menu window title lpt_number dw 0 ;LPT port number status db 0 ;program status flag int9h dd ? ;interrupt 9h vector window_start label word window_x db ? ;starting window column window_y db 1 ;starting window row window_end dw ? ;lower right window corner border_attr db ? ;border color menu_attr db ? ;window color hilite_attr db ? ;highlight color cursor_def dw ? ;default cursor definition index db 0 ;menu selection index ten db 10 ;base 10 divisor linecount dw 0 ;number of menu lines pagecount db 1 ;number of menu pages menupage db 0 ;current menu page code_table dw offset menu_table ;address of control code table end_offset dw offset menu_table ;ending program address ;============================================================================= ; KBINT receives control when an interrupt 9 is generated. ;============================================================================= kbint proc far pushf ;call BIOS keyboard routine call int9h sti ;enable interrupts push ax mov ah,2 ;get shift key status int 16h and al,0Fh ;mask off upper four bits cmp al,5 ;was the hotkey combo pressed? pop ax jne kb_exit ;no, then exit cmp status,0 ;check program status jne kb_exit ;exit if it's already up call main ;pop up the window kb_exit: iret ;exit kbint endp ;============================================================================= ; MAIN is the main body of the program. ;============================================================================= main proc near mov status,1 ;set program status flag push ax ;save all registers push bx push cx push dx push bp push si push di push ds push es mov ah,15 ;abort if the current video int 10h ; mode is not a text mode cmp al,7 je main1 cmp al,4 jb main1 ; ;Restore register values and return to caller. ; main_exit: pop es ;restore registers pop ds pop di pop si pop bp pop dx pop cx pop bx pop ax mov status,0 ;clear program status flag ret ; ;Save video parameters and read the cursor address from the CRT controller. ; main1: push cs ;establish DS addressability pop ds ; by pointing it to the assume ds:code ; code segment cld ;clear DF for string ops mov videocols,ah ;save columns displayed mov videopage,bh ;save active video page mov ah,3 ;get cursor information int 10h mov videocursormode,cx ;save cursor mode mov videocursorpos,dx ;save cursor position mov ax,40h ;point ES to the BIOS mov es,ax ; data area mov dx,es:[4Eh] ;save video start address mov videostart,dx ; ;Define monochrome or color video attributes. ; test byte ptr es:[63h],40h ;branch if this is jnz colorvideo ; a color system mov videoseg,0B000h ;monochrome attributes mov border_attr,70h mov menu_attr,07h mov hilite_attr,70h mov cursor_def,0C0Dh jmp short vsave colorvideo: mov videoseg,0B800h ;color attributes mov border_attr,70h mov menu_attr,4Fh mov hilite_attr,70h mov cursor_def,0607h ; ;Save video memory underlying the menu window, then open the window. ; vsave: mov ah,1 ;hide the cursor mov ch,20h int 10h mov cl,videocols ;determine window position sub cl,32 mov window_x,cl ;save starting column number mov ch,window_y mov dx,cx add dx,101Dh ;save coordinates of lower mov window_end,dx ; right window corner push cs ;point ES:DI to screen buffer pop es mov di,offset screen_buffer mov ax,offset udr_vio2mem ;call SCANREGION routine to mov cx,window_start ; buffer the contents of mov dx,window_end ; video memory call scanregion call openwindow ;open printer menu window mov al,hilite_attr ;draw menu selection bar call drawmenubar ; ;Monitor the keyboard for keystrokes and act upon the ones received. ; keyloop: mov ah,0 ;get a keystroke int 16h or al,al ;branch on extended keycodes jz functionkey ; ;Output control codes if ENTER was pressed. ; cmp al,13 ;check for ENTER keycode jne escape call outputlpt ;output indexed control codes jmp keyloop ;return to input loop ; ;Close the window and exit if ESC was pressed. ; escape: cmp al,27 ;check for ESC keycode jne slash jmp close ;jump to exit routines ; ;Jump down to the input line if the slash key was pressed. ; slash: cmp al,"/" ;check for slash character jne keyloop ;ignore anything else mov al,menu_attr ;blank the menu bar call drawmenubar call scanline ;read input and send to LPT mov al,hilite_attr ;redraw the menu bar call drawmenubar jmp keyloop ;loop back for more ; ;Send the corresponding control codes if a function key was pressed. ; functionkey: cmp ah,59 ;determine whether or not a jb keyloop ; function key was pressed cmp ah,68 ja up_arrow push ax ;save extended keycode mov al,menu_attr ;erase the menu bar call drawmenubar pop ax ;recover keycode sub ah,59 ;calculate new INDEX value mov index,ah mov al,hilite_attr ;draw new menu bar call drawmenubar call outputlpt ;output corresponding codes jmp keyloop ;return to input loop ; ;Move the menu bar up one line if up-arrow was pressed. ; up_arrow: cmp ah,72 ;check for up-arrow jne dn_arrow mov al,menu_attr ;erase the menu bar call drawmenubar dec index ;decrement INDEX and wrap jns newbar ; if necessary mov index,9 newbar: mov al,hilite_attr ;redraw the menu bar call drawmenubar jmp keyloop ;return to input loop ; ;Move the menu bar down one line if down-arrow was pressed. ; dn_arrow: cmp ah,80 ;check for down-arrow jne pgup mov al,menu_attr ;erase the menu bar call drawmenubar inc index ;increment INDEX and wrap cmp index,10 ; around if necessary jne newbar ;jump to finish up mov index,0 jmp newbar ; ;Flip to the preceding menu page if PgUp was pressed. ; pgup: cmp ah,73 ;check for PgUp jne pgdn cmp pagecount,1 ;ignore if there is only je retkey ; one menu dec menupage ;set MENUPAGE to previous jns newpage ; page and wrap around mov al,pagecount ; if necessary dec al mov menupage,al newpage: call writemenu ;write text of page to memory mov al,hilite_attr ;redraw the menu bar call drawmenubar retkey: jmp keyloop ;return to input loop ; ;Flip to the next page if PgDn was pressed. ; pgdn: cmp ah,81 ;check for PgDn jne retkey cmp pagecount,1 ;ignore if there is only je retkey ; one menu inc menupage ;adjust MENUPAGE mov al,pagecount cmp menupage,al jne newpage ;jump to finish up mov menupage,0 jmp newpage ; ;Close the menu window. ; close: mov si,offset screen_buffer ;point SI to buffer mov ax,offset udr_mem2vio ;call SCANREGION routine to mov cx,window_start ; restore the contents of mov dx,window_end ; video memory call scanregion ; ;Restore the cursor mode and position, then exit. ; restore: mov ah,2 ;restore position mov bh,videopage mov dx,videocursorpos int 10h mov ah,1 ;restore mode mov cx,videocursormode int 10h jmp main_exit ;return from interrupt main endp ;----------------------------------------------------------------------------- ; SCANREGION scans the cursor over the indicated region and calls a ; user-defined routine at each stop. ; Entry: AX - offset address of user-defined routine ; CH,CL - upper left corner of region ; DH,DL - lower right corner of region ;----------------------------------------------------------------------------- addr_udr dw ? ;routine address columns dw 0 ;number of columns in region scanregion proc near mov addr_udr,ax ;save address push cx ;save starting cursor position sub dl,cl ;calculate number of columns inc dl mov byte ptr columns,dl sub dh,ch ;calculate number of rows inc dh mov cl,dh xor ch,ch pop dx ;retrieve cursor position mov bh,videopage ;page number in BH scanreg1: push cx ;save row counter push dx ;save cursor position mov cx,columns ;load column counter scanreg2: mov ah,2 ;position cursor int 10h call word ptr cs:[addr_udr] ;call user-defined inc dl ; routine and loop scanreg2 ; advance the cursor pop dx ;advance cursor to next row inc dh ; and loop until all rows pop cx ; are done loop scanreg1 ret scanregion endp ;----------------------------------------------------------------------------- ; UDR_VIO2MEM is called by SCANREGION to save the contents of a screen area. ; Entry: ES:DI - buffer address ;----------------------------------------------------------------------------- udr_vio2mem proc near mov ah,8 ;get character and attribute int 10h ; under the cursor stosw ;buffer them ret udr_vio2mem endp ;----------------------------------------------------------------------------- ; UDR_MEM2VIO is called by SCANREGION to write to a screen area. ; Entry: DS:SI - buffer address ;----------------------------------------------------------------------------- udr_mem2vio proc near push cx ;save CX lodsw ;get character and attribute mov bl,ah ;attribute to BL mov ah,9 ;write character/attribute mov cx,1 int 10h pop cx ;restore CX and exit ret udr_mem2vio endp ;----------------------------------------------------------------------------- ; OPENWINDOW displays the printer control window. ;----------------------------------------------------------------------------- ftext db "1 2 3 4 5 6 7 8 9 10" openwindow proc near mov ax,0600h ;blank window region mov bh,menu_attr mov cx,window_start mov dx,window_end int 10h mov cx,window_start ;draw box around region to mov dx,window_end ; form window border mov bl,border_attr call textbox mov dx,window_start ;display window title add dx,0102h push dx mov si,offset pname mov cx,26 call writeln pop dx inc dh push dx ;draw first horizontal mov cx,26 ; divider mov bl,menu_attr call drawhorizontal pop dx inc dh mov cx,10 ;draw "F1".."F10" designators mov si,offset ftext open1: push cx push dx mov ah,2 int 10h mov ax,0E46h int 10h inc dl mov cx,2 call writeln pop dx inc dh pop cx loop open1 push dx ;draw second horizontal mov cx,26 ; divider mov bl,menu_attr call drawhorizontal pop dx inc dh push dx ;draw input line mov al,hilite_attr mov cx,26 call writeattr pop dx inc dh mov si,offset menutxt ;display menu line mov cx,24 call writeln call writemenu ;display current menu ret openwindow endp ;----------------------------------------------------------------------------- ; WRITELN displays a text string of known length. ; Entry: DS:SI - string address ; DH,DL - starting row and column ; CX - string length ;----------------------------------------------------------------------------- writeln proc near mov ah,2 ;position cursor mov bh,videopage int 10h wln1: lodsb ;get a byte mov ah,0Eh ;display it and advance the int 10h ; cursor one column loop wln1 ;loop until done ret writeln endp ;----------------------------------------------------------------------------- ; TEXTBOX draws a box of specified color around a region. ; Entry: CH,CL - upper left corner row and column ; DH,DL - lower right corner row and column ; BL - attribute ;----------------------------------------------------------------------------- wide dw 0 ;region width height dw 0 ;region height upleft dw ? ;upper left row and column textbox proc near mov upleft,cx ;save coordinates sub dh,ch ;calculate height dec dh mov byte ptr height,dh sub dl,cl ;calculate width dec dl mov byte ptr wide,dl mov bh,videopage ;set BH for video calls mov ah,2 ;draw upper left corner mov dx,upleft int 10h mov ax,09DAh mov cx,1 int 10h inc dl ;draw top horizontal line mov cx,wide call drawhorizontal mov ah,2 ;draw upper right corner add dl,byte ptr wide int 10h mov ax,09BFh mov cx,1 int 10h mov ah,2 ;draw lower left corner mov dx,upleft add dh,byte ptr height inc dh int 10h mov ax,09C0h mov cx,1 int 10h inc dl ;draw bottom horizontal line mov cx,wide call drawhorizontal mov ah,2 ;draw lower right corner add dl,byte ptr wide int 10h mov ax,09D9h mov cx,1 int 10h mov dx,upleft ;draw left vertical inc dh push dx mov cx,height call drawvertical pop dx add dl,byte ptr wide ;draw right vertical inc dl mov cx,height call drawvertical ret textbox endp ;----------------------------------------------------------------------------- ; DRAWHORIZONTAL draws a horizontal line of specified length. ; Entry: DH,DL - starting row and column ; CX - length ; BL - attribute ;----------------------------------------------------------------------------- drawhorizontal proc near mov ah,2 ;set cursor position mov bh,videopage int 10h mov ax,09C4h ;draw line int 10h ret drawhorizontal endp ;----------------------------------------------------------------------------- ; DRAWVERTICAL draws a vertical line of specified length. ; Entry: DH,DL - starting row and column ; CX - length ; BL - attribute ;----------------------------------------------------------------------------- drawvertical proc near mov bh,videopage vdraw1: push cx mov ah,2 ;position cursor int 10h mov ax,09B3h ;draw one character mov cx,1 int 10h inc dh ;move cursor to next line pop cx loop vdraw1 ;loop until done ret drawvertical endp ;----------------------------------------------------------------------------- ; WRITEMENU displays a page of menu text. ; Entry: MENUPAGE - menu page number ;----------------------------------------------------------------------------- writemenu proc near mov al,menupage ;point SI to menu text mov bl,200 mul bl mov si,ax add si,offset menu_table mov ax,0600h ;blank current menu mov bh,menu_attr mov cx,window_start add cx,0308h push cx mov dx,cx add dx,0913h int 10h pop dx mov cx,10 ;determine how many lines are mov al,pagecount ; to be written dec al cmp al,menupage jne wmloop mul ten mov cx,linecount sub cx,ax jcxz nomenu wmloop: push cx ;save line counter push dx ;save cursor position mov cx,20 ;display one line of menu text call writeln pop dx ;advance cursor to next line inc dh pop cx loop wmloop ;loop until done nomenu: ret writemenu endp ;----------------------------------------------------------------------------- ; WRITEATTR writes a series of attribute bytes to video memory. Writing is ; performed during the vertical retrace on color adapters. ; Entry: AL - attribute ; CX - number of attributes to write ; DH,DL - starting row and column ;----------------------------------------------------------------------------- writeattr proc near push ax ;save attribute mov al,videocols ;calculate address of the mul dh ; indicated character cell xor dh,dh ; in video memory add ax,dx shl ax,1 add ax,videostart mov di,ax inc di mov es,videoseg ;point ES to video memory cmp videoseg,0B000h ;don't wait if display je nowait ; is monochrome mov dx,3DAh ;address CRTC status register wait_for_vert: in al,dx ;wait for vertical retrace test al,8 jz wait_for_vert nowait: pop ax ;retrieve attribute attrloop: stosb ;write attributes inc di loop attrloop ret writeattr endp ;----------------------------------------------------------------------------- ; DRAWMENUBAR draws or erases the menu selection bar. ; Entry: AL - attribute ; INDEX - selection index number ;----------------------------------------------------------------------------- drawmenubar proc near mov dx,window_start ;calculate starting row and add dh,index ; column add dx,0302h mov cx,26 ;26 character cells to alter call writeattr ;write the attribute bytes ret drawmenubar endp ;----------------------------------------------------------------------------- ; SCANLINE reads an input string from the keyboard, converts ASCII numbers ; to binary, and sends them to the designated printer port. ;----------------------------------------------------------------------------- input_pos dw ? ;row and column of input line scanline proc near push cs ;point ES:DI to input buffer pop es mov di,offset input_buffer mov dx,window_start ;position the cursor add dx,0E02h mov input_pos,dx ;save coordinates mov ah,2 mov bh,videopage int 10h mov ah,1 ;unblank the cursor mov cx,cursor_def int 10h xor cl,cl ;zero character count ; ;Read and buffer keystrokes until ENTER or ESC is pressed. ; scanloop: mov ah,0 ;wait for a keystroke int 16h cmp al,8 ;check for backspace jne scan1 or cl,cl ;ignore backspace if count jz scanloop ; is zero call backspace ;perform backspace jmp scanloop ;return to input loop scan1: cmp al,13 ;branch if ENTER pressed je endscan cmp al,27 ;branch if ESC pressed je esckey cmp al,32 ;ignore control codes jb scanloop cmp cl,255 ;ignore the character if je scanloop ; input buffer is full call insert_char ;buffer the character jmp scanloop ;return to input loop ; ;Parse the text just entered and output binary codes to the printer. ; endscan: mov es:[di],al ;buffer EOL character push bx ;save registers push cx push di mov si,offset input_buffer ;point SI to text mov di,offset output_buffer ;point DI to output buffer call asc2bin ;convert ASCII to binary jnc checkstat ;continue if no error mov si,offset errtxt1 ;display error message if scan2: call win_error ; code string is invalid pop di ;restore registers pop cx pop bx jmp scanloop ;return to input loop checkstat: call lptstatus ;check printer status jnc scan3 ;continue if printer ready mov si,offset errtxt2 ;display error message jmp scan2 scan3: mov si,offset output_buffer ;point SI to codes call sendlptcodes ;output them add sp,6 ;clean up the stack ; ;Clear the input line and exit. ; esckey: mov ah,1 ;blank the cursor mov ch,20h int 10h mov ah,2 ;position cursor on input line mov dx,input_pos mov bh,videopage int 10h mov ax,0A20h ;blank the input line mov cx,25 int 10h ret ;and exit scanline endp ;----------------------------------------------------------------------------- ; BACKSPACE deletes the character left of the cursor. ;----------------------------------------------------------------------------- backspace proc near dec cl ;decrement character count dec di ;decrement buffer pointer cmp cl,24 ;branch if count > 24 ja refresh push cx ;save character count mov ah,0Eh ;move the cursor back one int 10h ; space mov ax,0A20h ;overwrite character under the mov cx,1 ; cursor with a space int 10h pop cx ;restore count ret refresh: push cx ;save character count mov si,di ;scroll the input line one sub si,25 ; character to the right to mov cx,25 ; blank the last character mov dx,input_pos call writeln pop cx ;restore count ret backspace endp ;----------------------------------------------------------------------------- ; INSERT_CHAR inserts a character into the input buffer. ;----------------------------------------------------------------------------- insert_char proc near stosb ;buffer the character inc cl ;increment character count cmp cl,25 ;branch if count > 25 ja refresh mov ah,0Eh ;display the character int 10h ret insert_char endp ;----------------------------------------------------------------------------- ; ASC2BIN converts an ASCII text string into a string of binary bytes. ; Entry: DS:SI - text string address ; ES:DI - binary buffer address ; Exit: CF clear = no error, CF set = error ; CL - number of codes converted ;----------------------------------------------------------------------------- asc2bin proc near push di ;save count byte address inc di ;advance past count byte xor cl,cl ;zero count xor bh,bh ;zero BH a2bloop: mov dx,0A00h ;initialize DH (base) and ; DL (accumulator) ; ;Search until the first character of an entry or EOL marker is encountered. ; nextchar: lodsb ;get a character call check_20_2c ;skip spaces, commas, and tabs jz nextchar cmp al,0Dh ;done if EOL encountered je endconvert cmp al,"/" ;done if slash encountered je endconvert call check_22_27 ;check for " or ' mark jnz isdigit ;branch if neither ; ;Buffer everything between quotation marks or apostrophes. ; inquotes: lodsb ;get next character call check_22_27 ;exit loop if ending quote jz nextchar ; symbol is encountered cmp al,0Dh ;exit if line terminator is je endconvert ; is encountered stosb ;buffer the character inc cl ;increment count jz a2berror ;error if count > 255 jmp inquotes ;loop back for more ; ;Convert a numeric entry to binary. ; digitloop: lodsb ;get next character call check_20_2c ;check for delimiter marking jz endnumtext ; end of the current number call check_22_27 jz endnumtext cmp al,0Dh ;check for end-of-line je endnumtext isdigit: cmp al,30h ;digit is valid if it lies jb a2berror ; between "0" and "9" cmp al,3Ah jb ascii_adjust and al,0DFh ;capitalize presumed alpha cmp al,"X" ;change base to 16 for hex jne check_hex ; numbers if "X" is found mov dh,16 jmp digitloop check_hex: cmp dh,16 ;error if this isn't base 16 jne a2berror cmp al,41h ;digit is valid if it lies jb a2berror ; between "A" and "F" cmp al,46h ja a2berror sub al,7 ;hex conversion ascii_adjust: sub al,30h ;ASCII to binary conversion mov bl,al ;save digit mov al,dl ;multiply accumulator by base mul dh add ax,bx ;add new digit to result or ah,ah ;error if result > 255 jnz a2berror mov dl,al ;put new value in accumulator jmp digitloop ;get next digit a2berror: pop bx ;clean up the stack xor cl,cl ;zero CX on error mov es:[bx],cl ;store zero in buffer stc ;set CF for error ret endnumtext: mov al,dl ;write accumulator value to stosb ; binary buffer inc cl ;increment count jz a2berror ;error if count > 255 dec si ;point SI to terminator jmp a2bloop ;search for next number ; ;Do housekeeping and exit. ; endconvert: pop bx ;recover count byte address mov es:[bx],cl ;store count in buffer clc ;clear CF for exit ret asc2bin endp ;----------------------------------------------------------------------------- ; CHECK_20_2C returns a flag if AL holds an ASCII space, comma, or tab. ; Entry: AL - character ; Exit: ZF clear = no match, ZF set = space or comma ;----------------------------------------------------------------------------- check_20_2c proc near cmp al,20h ;check for ASCII space je ischar1 cmp al,2Ch ;check for ASCII comma je ischar1 cmp al,9 ;check for ASCII tab ischar1: ret check_20_2c endp ;----------------------------------------------------------------------------- ; CHECK_22_27 returns a flag if AL holds an ASCII quote mark or apostrophe. ; Entry: AL - character ; Exit: ZF clear = no match, ZF set = space or comma ;----------------------------------------------------------------------------- check_22_27 proc near cmp al,22h ;check for quotation mark je ischar2 cmp al,27h ;check for apostrophe ischar2: ret check_22_27 endp ;----------------------------------------------------------------------------- ; LPTSTATUS checks the status of the indicated printer. ; Entry: LPT_NUMBER - printer number (0-2) ; Exit: CF clear = printer ready, CF set = printer not ready ;----------------------------------------------------------------------------- lptstatus proc near mov ah,2 ;get status byte from BIOS mov dx,lpt_number int 17h test ah,29h ;check bits 0, 3, and 5 jnz notready ;error if one is set test ah,0F9h ;check all but bits 1 and 2 jz notready ;error if all are zero clc ;clear CF for return ret notready: stc ;set CF for return ret lptstatus endp ;----------------------------------------------------------------------------- ; SENDLPTCODES sends a string of bytes to the designated printer. ; Entry: DS:SI - string (first byte = length) ; LPT_NUMBER - printer number (0-2) ;----------------------------------------------------------------------------- sendlptcodes proc near lodsb ;get string length in CX mov cl,al xor ch,ch jcxz nosend ;exit if length is zero mov dx,lpt_number ;initialize DX sendloop: lodsb ;loop until all bytes are mov ah,0 ; output int 17h loop sendloop nosend: ret sendlptcodes endp ;----------------------------------------------------------------------------- ; OUTPUTLPT sends the string of control codes indexed by INDEX and MENUPAGE ; to the printer designated by LPT_NUMBER. ;----------------------------------------------------------------------------- outputlpt proc near call lptstatus ;check printer status jnc isready mov si,offset errtxt2 ;error if printer is not call win_error ; ready no_output: ret isready: mov al,menupage ;calculate offset address mul ten ; of control code string add al,index ; from MENUPAGE and INDEX cmp ax,linecount ;make sure a control code jae no_output ; string is defined mov cx,ax mov si,code_table ;find offset address of the jcxz nocalc ; corresponding code string outloop: mov al,[si] ; by scanning the linked inc al ; list of control codes add si,ax loop outloop nocalc: call sendlptcodes ;output the code string ret outputlpt endp ;----------------------------------------------------------------------------- ; WIN_ERROR displays an error message and waits for a keystroke. ; Entry: DS:SI - text address ;----------------------------------------------------------------------------- menutxt db "Esc Enter /",20h,18h,19h,20h,"PgUp PgDn" errtxt1 db "Error: Invalid entry",4 dup (20h) errtxt2 db "Error: Printer not ready" win_error proc near call disp_err_msg ;display error message mov ax,0E07h ;beep int 10h win1: mov ah,1 ;loop until a key is int 16h ; pressed jz win1 mov si,offset menutxt ;restore original text call disp_err_msg ret win_error endp ;----------------------------------------------------------------------------- ; DISP_ERR_MSG displays a window error message. ; Entry: DS:SI - text address ;----------------------------------------------------------------------------- disp_err_msg proc near mov ah,3 ;get cursor position mov bh,videopage int 10h push dx ;save it mov dx,window_start ;display error message add dx,0F02h mov cx,24 call writeln mov ah,2 ;restore cursor position pop dx int 10h ret disp_err_msg endp ;============================================================================= ; INITIALIZE handles command line directives and installation/deinstallation. ;============================================================================= errmsg1 db "Usage: SETUP2 [d:][path][filename] | [/C codes] | [/U]$" errmsg2 db "Already installed$" errmsg3 db "Cannot uninstall$" errmsg4 db "Not installed$" errmsg6 db "Invalid code string$" errmsg7 db "Printer not ready$" errmsg8 db "File not found$" errmsg9 db "File too large$" errmsg10 db "Insufficient memory$" errmsg11 db "Make file error - line $" initmsg1 db "Uninstalled$" installed db 0 initialize proc near assume cs:code, ds:code ; ;See if a copy is already resident in memory. ; cld ;clear DF mov word ptr [begin],0 ;initialize fingerprint xor bx,bx ;zero BX for start mov ax,cs ;keep CS value in AX init1: inc bx ;increment search segment value mov es,bx cmp ax,bx ;not installed if current je parse ; segment is looped back to mov si,offset begin ;search this segment for ASCII mov di,si ; fingerprint mov cx,16 repe cmpsb jne init1 ;loop back if not found mov installed,1 ;set installed flag ; ;Parse the command line for entries and take appropriate action. ; parse: mov si,81h ;point SI to command line parseloop: lodsb ;get a character cmp al,20h ;skip it if it's a space je parseloop cmp al,0Dh ;exit loop when a carriage jne init2 ; return is encountered jmp install init2: cmp al,"/" ;check for "/" modifier je init3 ;branch if found mov dx,offset errmsg2 ;initialize error pointer cmp installed,0 ;check installed flag jne error_exit ;error if already installed dec si ;point SI to filename call make ;process printer make file jmp setvec ;install init3: lodsb ;get parameter and al,0DFh ;capitalize cmp al,"U" ;branch to handling routine je uninstall cmp al,"C" je readcodes ; ;An error was encountered in parsing. Display error message and exit. ; syntax_error: mov dx,offset errmsg1 ;display error message error_exit: mov ah,9 int 21h mov ax,4C01h ;exit with ERRORLEVEL = 1 int 21h ; ;Process a /U command line parameter. ; uninstall: mov dx,offset errmsg4 ;error if not installed cmp installed,1 jne error_exit call remove ;call uninstall routine mov dx,offset errmsg3 ;exit on error jc error_exit mov dx,offset initmsg1 ;display "Uninstalled" mov ah,9 ; message int 21h mov ax,4C00h ;exit with ERRORLEVEL = 0 int 21h ; ;Process a /C command line parameter. ; readcodes: push cs ;set ES to code segment pop es mov di,offset menu_table ;point DI to scratch area call asc2bin ;convert text to binary mov dx,offset errmsg6 ;exit on conversion error jc error_exit or cl,cl ;exit if no codes were entered jz error_exit call lptstatus ;check printer status mov dx,offset errmsg7 jc error_exit ;error if printer not ready mov si,offset menu_table ;point SI to output buffer call sendlptcodes ;output control codes read_exit: mov ax,4C00h ;exit with ERRORLEVEL = 0 int 21h ; ;Make sure a copy isn't already loaded before installing this one. ; install: mov dx,offset errmsg2 ;initialize error pointer cmp installed,0 ;check installed flag jne error_exit ;error if already installed ; ;Reset the interrupt 9h vector to an internal handler. ; setvec: mov ax,3509h ;save old vector int 21h mov word ptr int9h,bx mov word ptr int9h[2],es mov ax,2509h ;then set the new vector mov dx,offset kbint int 21h ; ;Deallocate the program's environment block. ; mov ax,ds:[2Ch] ;get environment segment mov es,ax mov ah,49h ;free it int 21h ; ;Display copyright notice, then terminate and remain resident in memory. ; mov ah,9 ;display message mov dx,offset program int 21h mov ax,3100h ;terminate with ERRORLEVEL = 0 mov dx,end_offset ;calculate amount of memory sub dx,offset code - 15 ; to reserve in DX mov cl,4 ;convert bytes to paragraphs shr dx,cl int 21h ;terminate initialize endp ;----------------------------------------------------------------------------- ; REMOVE deallocates the memory block addressed by ES and restores the ; interrupt vector displaced on installation. ; Entry: ES - segment to release ; Exit: CF clear - program uninstalled ; CF set - can't uninstall ;----------------------------------------------------------------------------- remove proc near mov cx,es ;abort if the interrupt 9 mov ax,3509h ; vector has been altered int 21h ; since installation mov ax,es cmp ax,cx jne remove_error mov es,cx mov ah,49h ;free memory given to int 21h ; original program block jc remove_error ;branch on error push ds ;restore interrupt vector assume ds:nothing mov ax,2509h lds dx,es:[int9h] int 21h pop ds assume ds:code not word ptr es:[begin] ;destroy ASCII fingerprint clc ;clear CF for exit ret remove_error: stc ;set CF to indicate program ret ; couldn't be uninstalled remove endp ;============================================================================= ; MAKE reads a make file and builds the program's menu and code tables. ;============================================================================= handle dw ? ;file handle filesize dw ? ;file size in bytes fileseg dw ? ;file buffer segment make proc near mov dx,si ;save address of first char make1: lodsb ;find end of filename cmp al,0Dh je make2 cmp al,20h jne make1 make2: mov byte ptr [si-1],0 ;convert filename to ASCIIZ ; ;Open the printer make file and read it into memory. ; mov ax,3D00h ;open the make file int 21h mov dx,offset errmsg8 ;error if call failed jc make_error2 mov handle,ax ;save file handle mov bx,ax ;determine the file's size mov ax,4202h ; in bytes xor cx,cx xor dx,dx int 21h or dx,dx ;error if greater than 64K jz make3 make_error1: mov dx,offset errmsg9 make_error2: jmp error_exit make3: cmp ax,0FFD0H ja make_error1 mov filesize,ax ;save file size mov ah,4Ah ;shrink memory allocation mov bx,1000h ; to 64K push cs pop es int 21h mov dx,offset errmsg10 ;insufficient memory if jc make_error2 ; call failed mov ah,48h ;request enough additional mov bx,filesize ; memory to read in the add bx,18 ; make file mov cl,4 shr bx,cl int 21h mov dx,offset errmsg10 ;insufficient memory if jc make_error2 ; call failed mov fileseg,ax ;save segment address mov ax,4200h ;reset file pointer mov bx,handle xor cx,cx xor dx,dx int 21h mov ah,3Fh ;read make file into the mov bx,handle ; portion of memory just mov cx,filesize ; allocated xor dx,dx assume ds:nothing mov ds,fileseg int 21h mov ah,3Eh ;close the file mov bx,handle int 21h mov bx,filesize ;find the end of the file cmp byte ptr [bx-1],1Ah ;delete last character if it jne make4 ; is a Ctrl-Z dec bx make4: cmp word ptr [bx-2],0A0Dh ;add a carriage return/ je make5 ; line feed pair if the mov word ptr [bx],0A0Dh ; file doesn't already add bx,2 ; end with one make5: mov byte ptr [bx],0 ;write terminating zero ; ;Copy the printer name from the printer make file. ; push cs ;initialize DS:SI to address pop es ; file buffer and ES:DI to xor si,si ; address printer name mov di,offset pname ; string pname1: call skip_comment ;skip comment lines pname2: cmp byte ptr [si],0 ;exit if EOF is reached jne pname3 jmp make_exit pname3: mov cx,26 pname4: lodsb ;get a character cmp al,0Dh ;quit now if the character is jne pname5 ; a carriage return inc si jmp short extract_text pname5: stosb ;otherwise copy the character loop pname4 ;copy up to 26 characters call nextline ;advance to start of next line ; ;Extract the menu text entries from the printer make file. ; extract_text: mov di,offset menu_table ;initialize DI push si ;save starting address text1: call skip_comment ;skip comment lines text2: cmp byte ptr [si],0 ;exit if EOF is reached je extract_codes mov cx,20 text3: lodsb ;get a character cmp al,0Dh ;finish this line and proceed je text5 ; to the next if a semicolon cmp al,";" ; or carriage return is je text4 ; encountered stosb ;copy the character loop text3 ;loop back for another text4: call add_spaces ;pad text with spaces inc linecount ;register the entry call nextline ;find start of next line jmp text1 text5: call add_spaces ;pad text with spaces inc linecount ;register the entry inc si ;advance SI to start of jmp text1 ; next line ; ;Extract the control codes from the printer make file. ; extract_codes: mov code_table,di ;save code table address pop si ;point SI to first line mov cx,linecount ;initialize line counter jcxz calc_pages ;skip if no lines codes1: call skip_comment ;skip comment lines codes2: lodsb ;get a character cmp al,0Dh ;error if carriage return is je code_error ; found before semicolon cmp al,";" ;loop back for another if this jne codes2 ; one isn't a semicolon push cx ;if a semicolon was found, call call asc2bin ; ASC2BIN to convert the text pop cx ; string that follows to jc code_error ; to binary inc si ;advance SI to next line loop codes1 ;loop until all lines are done ; ;Calculate the number of menu pages. ; calc_pages: push cs ;restore DS pop ds assume ds:code mov end_offset,di ;save ending address mov ax,linecount ;exit now if there are or ax,ax ; no entries jz make_exit dec ax ;calculate number of menu div ten ; pages inc al mov pagecount,al ;store count in PAGECOUNT make_exit: mov ah,49h ;free memory allocated for mov es,fileseg ; the file buffer int 21h ret ; ;Display the line number where a make error occurred, then exit. ; code_error: push cs ;reset DS pop ds mov ah,9 ;display error message mov dx,offset errmsg11 int 21h mov ax,linecount ;display line number sub ax,cx inc ax call bin2asc mov ax,4C01h ;exit with ERRORLEVEL = 1 int 21h make endp ;----------------------------------------------------------------------------- ; BIN2ASC converts a binary value in AX to ASCII and displays it. ;----------------------------------------------------------------------------- bin2asc proc near mov bx,10 ;initialize divisor word and xor cx,cx ; digit counter b2a1: inc cx ;increment digit count xor dx,dx ;divide by 10 div bx push dx ;save remainder on stack or ax,ax ;loop until quotient is zero jnz b2a1 b2a2: pop dx ;retrieve a digit from stack add dl,30h ;convert it to ASCII mov ah,2 ;display it int 21h loop b2a2 ;loop until done ret bin2asc endp ;----------------------------------------------------------------------------- ; ADD_SPACES pads a menu text string with space characters. ;----------------------------------------------------------------------------- add_spaces proc near jcxz add_exit mov al,20h rep stosb add_exit: ret add_spaces endp ;----------------------------------------------------------------------------- ; SKIP_COMMENT advances SI to the first non-comment line. ;----------------------------------------------------------------------------- skip_comment proc near cmp byte ptr [si],"#" jne skip_exit call nextline jmp skip_comment skip_exit: ret skip_comment endp ;----------------------------------------------------------------------------- ; NEXTLINE advances SI to the beginning of the next line. ;----------------------------------------------------------------------------- nextline proc near lodsb cmp al,0Dh jnz nextline inc si ret nextline endp ;============================================================================= ; Buffer areas used after installation. ;============================================================================= pc = $ screen_buffer = pc pc = pc + 1020 input_buffer = pc pc = pc + 256 output_buffer = pc pc = pc + 256 menu_table = pc code ends end begin