Magnum One

home *** CD-ROM | disk | FTP | other *** search

/ Magnum One / Magnum One (Mid-American Digital) (Disc Manufacturing).iso / d1 / ctrlalt.arc / CTRLALT.ASM < prev next >

Wrap

Assembly Source File | 1988-06-29 | 38KB | 1,318 lines

title CTRLALT cseg segment assume cs:cseg, ds:cseg org 100H begin: jmp install ascbuffer label byte db 13,'CTRLALT Version 1.00 April, 1986',13,10 db 'Copyright R.M.Wilson and B.Simon',26 ;-------------------------------------------------------------------------- background = 1FH ; CHANGE COLORS mainattr = 30H ; HERE FOR ASCII border = 19H ; TABLES attrlabel=1BH monobackground = 07H ; CHANGE MONOCHROME monomainattr = 70H ; ATTRIBUTES monoborder = 0FH ; HERE colxor = 2AH ; Attributes to XOR for highlighting monoxor = 77H ; for ^@P and ^@<Enter> asccolxor = 5FH ; ...and, respectively, ascmonoxor = 0FFH ; for ASCII tables (^@A and H). colcopyattr = 1EH ; When COPY command is used. 1EH=Yellow/Blue monocopyattr = 07H ; 07H=White/Black begoff = 246 ;Offset for upper left corner of decimal ASCII table. hexbegoff = 166 ;Ditto for hex. attrbegoff= 1546 ;Ditto for Attribute table. ansibegoff= 1610 ;Ditto for ANSI table. callcombo = 0CH ;0CH for Ctrl-Alt, 06H for Ctrl-Shift, 0AH for Shift-Alt. ;------------------------------------------------------------------------ ;**** DEFAULTS attrchar db 24 ;Character used initially by CTRL-ALT-T drawmode dw 1 ;0-6 Initial mode for Box Drawing (ALT-NUMPAD). drawdown db 0 ;For Alt-Grey±: 1=dn/rt, 0=neutral, -1=up/lf ;Following are for CTRL-ALT-I fastflag db 0FFH ;0 if slow, 0FFH if fast inserting is wanted. carretflag db 0FFH ;0 if backspacing, 0FFH if carriage returns are wanted. ;------------------------------------------------------------------------- ;**** SCAN CODES FOR COMMAND KEYS FOLLOW: commands db 1FH,2EH,25H,18H,1EH,19H,23H,43H db 1CH,17H,10H,0CH,0DH,30H,12H db 0BH,2,3,4,5,6,7 db 14H,13H,8,9,0AH db 2FH,2CH,31H ;**** CORRESPONDING SUBROUTINES TO JUMP TO: comaddr dw Switch,Copy,Kill,Otherasc,decAsc,Print,Hexasc,back2dos dw cUt,Insert,stopstart,slowspeed,fastspeed,Backsp,asciiEnter dw setdraw,setdraw,setdraw,setdraw,setdraw,setdraw,setdraw dw showaTtrs,carRets,setdrawup,unsetdrawdown,setdrawdown dw Vanilla,Zilch,showaNsi ;------------------------------------------------------------------------- ;**** SCAN CODES FOR CTRL-ALT-P SUBCOMMANDS FOLLOW: prtcoms db 1CH,19H,50H,48H,49H,51H,1EH,1,1FH,4FH,47H,13H begincodes label byte ;Control codes to prn only below. db 30H,11H,2EH,20H,14H,3H,16H,9H db 25H,2,21H,12H,17H,10H,31H,18H ;**** CORRESPONDING SUBROUTINES TO JUMP TO: prtaddr dw enter,enter,dnarr,uparr,pgup,pgdn,all,esc,pswitch,pend,phome,reset codeaddr dw bold,wide,cond,dstrike,tiny,charset2,underline,lf8 dw skipperf,unidir,topform,emph,pica,qual,newpage,alloff ;------------------------------------------------------------------------- ;**** SCAN CODES FOR CTRL-ALT-ENTER SUBCOMMANDS FOLLOW: cutcoms db 16H,50H,48H,4DH,4BH,1H,52H,1CH,17H,37H db 19H,49H,51H,4EH,4AH,2EH,1FH,47H,4FH db 12H ;**** CORRESPONDING SUBROUTINES TO JUMP TO: cutaddr dw ccut,cdnarr,cuparr,crtarr,clfarr,cesc,tack,tack,immenter,prtbox dw prtbox,cpgdn,cpgup,cgplus,cgminus,ccopy,cswitch,home,end dw immenter ;------------------------------------------------------------------------- ;**** SCAN CODES FOR CTRL-ALT-A/H SUBCOMMANDS FOLLOW: asccoms db 30H,12H,48H,50H,4DH,4BH,37H,19H,1 db 47H,4FH,1CH ;**** CORRESPONDING SUBROUTINES TO JUMP TO: ascaddr dw ascbuff,ascins,ascup,ascdn,ascrt,asclf,ascprn,ascprn,ascesc dw aschome,ascend,ascins ;------------------------------------------------------------------------------ bold db 27,69,27,71,0FFH ;emph & double strike dstrike db 27,71,0FFH underline db 27,45,1,0FFH tiny db 27,83,1,27,65,5,27,50,15,0FFH lf8 db 27,48,0FFH charset2 db 27,54,0FFH cond db 15,0FFH wide db 27,87,1,0FFH skipperf db 27,78,8,0FFH unidir db 27,85,1,0FFH topform db 12,0FFH emph db 27,69,0FFH pica db 27,58,0FFH ;proprinter qual db 27,73,2,0FFH ;proprinter newpage db 27,52,0FFH ;proprinter alloff db 27,70,27,72,18,27,87,0,27,84,27,79,27,55 db 27,45,0,27,65,12,27,50,27,73,0,13,0FFH ;#################################################################### oldvec = 5CH oldtvec= 60H ;#################################################################### on_flag db 0 ;1--Marking, 2--^@P myint: push ax ;Replacement for Interrupt 9. push ds sub ax,ax mov ds,ax mov al,ds:[417H] and al,0FH cmp al,callcombo je readport cmp al,8 ;alt jne exit cmp cs:drawmode,0 je exit in al,60H sub al,47H jc exit cmp al,11 ja exit jmp draw readport:in al,60H ;Read port to see what happened. push bp cld xor bp,bp ck:cmp al, cs:commands[bp] je lets_go inc bp cmp bp,offset comaddr - offset commands ;number of commands jl ck pop bp exit: pop ds pop ax jmp dword ptr cs:[oldvec] lets_go: push es push bx push cx push dx push si push di call reset_keyboard shl bp,1 jmp cs:comaddr[bp] reset_keyboard: cli in al,61H ;This stuff is necessary for PC and XT mov ah,al ;...could be omitted for AT. or al,80H out 61H,al xchg ah,al out 61H,al mov al,20H out 20H,al sti ret ;========================================== back2dos:mov ah,4CH int 21H ;========================================== vanilla: mov ax,0B000H mov es,ax mov al,7 jmp short l34 copy: call aim rep movsw l34:mov di,1 mov cx,2000 clr:stosb inc di loop clr jmp short endint kill: call aim mov ax,720H rep stosw jmp short endint aim: mov cx,2000 ;Sets cx,es,ds,si=di=0,al,xorattr mov ax,0B000H xor si,si xor di,di mov ds,di mov bl,byte ptr ds:[410H] mov ds,ax mov es,ax add ah,8H test bl,10H je cmon mov es,ax mov cs:xorattr,monoxor mov al,colcopyattr ret cmon:mov ds,ax ;color monitor in use mov cs:xorattr,colxor mov al,monocopyattr ret ;========================================== endint: pop di endint2: pop si pop dx pop cx pop bx pop es pop bp pop ds pop ax iret ;============================== switch: call aim ; sets si,di,cx,bl push bx ; get cursor push cx mov ah,3 xor bh,bh int 10H mov ch,20H ;turn off cursor mov ah,1 int 10H pop cx pop bx push ds mov ds,di xor bl,10H mov ds:[410H],bl pop ds mov ax,3 int 10H xor di,di rep movsw mov ah,2 ;set cursor at dx xor bh,bh int 10H jmp endint ;========================================== xorxor = colxor XOR monoxor xorattr db 44H print: test cs:on_flag,2 je ov274 jmp endint ov274:or cs:on_flag,2 xor dx,dx mov ah,2 int 17H test ah,8 jne badprn test ah,20H je ov678 badprn:mov ax,0E07H int 10H jmp esc ov678:call aim push ds pop es xor bh,bh mov ah,3 int 10H ;dh is cursor row mov ax,160 mul dh mov dx,ax inc dx mov bp,1 ;number of marked rows marknwait:call mark xor ah,ah int 16H call mark xor bx,bx comp:cmp ah, cs:prtcoms[bx] je gotcom inc bx cmp bx,offset prtaddr -offset prtcoms ;no. of commands jl comp jmp marknwait gotcom: cmp bx,offset begincodes - offset prtcoms jge sendcodes shl bx,1 jmp cs:prtaddr[bx] sendcodes:push si push dx sub bx,offset begincodes - offset prtcoms shl bx,1 mov si,cs:codeaddr[bx] xor dx,dx more:xor ah,ah mov al,cs:[si] inc si cmp al,0FFH je done2 int 17H jmp more reset: push si push dx xor dx,dx mov ah,1 int 17H done2:pop dx pop si jmp marknwait pend: mov ax,bp mov dx,1+160*25 mov bl,160 mul bl sub dx,ax jmw:jmp marknwait phome: mov dx,1 jmp marknwait pswitch: mov ax,es xor ah,8H mov es,ax xor cs:xorattr,xorxor jmp marknwait dnarr: inc bp mov bx,bp mov ax,160 mul bl add ax,dx cmp ax,4160 jle jmw dec bp jmp marknwait uparr: dec bp jne jmw inc bp jmp marknwait pgup: sub dx,160 jge jmw add dx,160 jmp marknwait pgdn: mov ax,bp mov bl,160 mul bl add ax,dx cmp ax,4000 jg jmw add dx,160 jmp marknwait all: mov dx,1 mov bp,25 enter: push es ;start si-1 offset, do bp lines pop ds mov si,dx xor dx,dx dec si mn:mov cx,80 up9:lodsb xor ah,ah mov bl,al ;Filter out ASCII 0-1F, 80-9F. and bl,7FH cmp bl,20H jae ov134 mov al,20H ov134:int 17H inc si loop up9 mov ax,0DH int 17H mov ax,0AH int 17H dec bp jne mn esc: and cs:on_flag,0FDH jmp endint mark: mov si,bp mov di,dx mov al,cs:xorattr up3:mov cx,80 up4:xor byte ptr es:[di],al inc di inc di loop up4 dec si jnz up3 ret ;===================================================== numrows dw 0 numcols dw 0 upleft dw 0 screen dw 0B800H showattrs: cmp cs:asciionflag,0 je ov76 jmp ei ov76:mov cs:asciionflag,'T' mov cs:upleft,attrbegoff call attrsetup call fewhexnos wt:call attrdisplay xor ah,ah int 16H cmp ah,1H je ov39 mov di,attrbegoff+12 mov cs:attrchar,al mov dx,ax ;save mov si, offset scan mov ah,attrlabel call write4 call hexndec mov di,attrbegoff+1610 mov si,offset ascii mov cx,5 call write mov dh,dl call hexndec jmp wt ov39:jmp restore hexndec: inc di inc di mov bh,dh call showbx mov al,'H' stosw add di,4 mov al,dh call decshowal ret write4: mov cx,4 write: lods byte ptr cs:[si] stosw loop write ret scan db 'Scan' ascii db 'Ascii' otherasc:call aim push es pop cs:screen push cs:upleft push cs:numrows push cs:numcols call decload call monoclear ;and border call display call hexload call monoclear ;and border call hexdisplay pop cs:numcols pop cs:numrows pop cs:upleft ei:jmp endint decasc: cmp cs:asciionflag,0 jne ei call aim push ds pop cs:screen call decload call savenclear ;and border call display ;and numbers jmp asciiwait hexasc: cmp cs:asciionflag,0 jne ei call aim push ds pop cs:screen call hexload call savenclear ;and border call hexdisplay ;and hexnums jmp asciiwait decload: mov cs:upleft,begoff mov cs:numrows,15 mov cs:numcols,34 ret hexload: mov cs:upleft,hexbegoff mov cs:numrows,19 mov cs:numcols,22 ret savenclear: mov ax,cs:screen mov ds,ax push cs pop es mov di,offset store mov si,cs:upleft ;save mov bp,cs:numrows up81:mov cx,cs:numcols rep movsw add si,160 sub si,cs:numcols sub si,cs:numcols dec bp jnz up81 monoclear:mov ax,cs:screen mov es,ax mov di,cs:upleft ;background and ascii chars mov bp,cs:numrows ; no. of rows mov al,20H mov ah,background cmp cs:screen,0B000H jne row mov ah,monobackground row:mov cx,cs:numcols rep stosw add di,160 sub di,cs:numcols sub di,cs:numcols dec bp jnz row mov ax,cs:numcols ;Do border. dec ax dec ax shl ax,1 mov bx,ax ;colb neg ax add ax,156 mov dx,ax ;rest mov di,cs:upleft mov ah, border cmp cs:screen,0B000H jne ov737 mov ah,monoborder ov737:mov al,201 stosw call horiz mov al,187 stosw mov di,cs:upleft mov cx,cs:numrows dec cx dec cx mov al,186 add di,160 up0:stosw add di,bx ;colb stosw add di,dx ;rest loop up0 mov al,200 stosw call horiz mov al,188 stosw ret horiz: mov cx,cs:numcols dec cx dec cx mov al,205 rep stosw ret ;========================= attrdisplay: xor bl,bl mov di,cs:upleft add di,328 mov bp,8 mov al,cs:attrchar wrr:call eightattr inc di inc di call eightattr add di,126 dec bp jnz wrr ret eightattr:mov cx,8 ffff:mov ah,bl cmp cs:asciionflag,'N' jne ov764 push bx ;This routine converts ah to 'ansi' mov bl,ah and bx,0FH mov dl,cs:ansiperm[bx] push cx mov cl,4 shr ah,cl mov bl,ah mov ah,cs:ansiperm[bx] shl ah,cl pop cx add ah,dl pop bx ov764:stosw inc bl loop ffff ret ;---------------------------------------------------- attrsetup:call aim push ds pop cs:screen mov cs:numrows,11 mov cs:numcols,22 call savenclear ;and border ret showansi: cmp cs:asciionflag,0 je ov732 jmp ei ov732:mov cs:asciionflag,'N' mov cs:upleft,ansibegoff call attrsetup mov di,168+ansibegoff mov ah,2 up333:mov cx,8 mov al,'0' up891:stosb inc di inc al loop up891 inc di inc di dec ah jne up333 mov di,322+ansibegoff mov cl,8 mov al,'0' up99:mov byte ptr es:[di],'4' inc di inc di stosb add di,157 inc al loop up99 add di,18 mov ah,attrlabel mov si,offset ansilabel call write4 mov di,12+ansibegoff mov si,offset ansihead1 call write4 add di,10 mov si,offset ansihead2 call write4 call attrdisplay xor ah,ah int 16H jmp restore ansihead1 db '0;3x' ansihead2 db '1;3x' ansilabel db 'ANSI' ansiperm db 0,0100B,0010B,0110B,0001B,0101B,0011B,0111B db 1,1100B,1010B,1110B,1001B,1101B,1011B,1111B ;====================================================== display: xor bl,bl ;char counter mov di,cs:upleft add di,170 mov bp,13 writeasc: call fivech call fivech add di,10 call fivech call fivech add di,102 dec bp jnz writeasc numbers: ;for ASCII table mov di,begoff+166 mov cl,13 mov al,'0' call numtype mov di,begoff+164 mov cl,13 up55:stosb add di,33 inc al stosb add di,125 inc al cmp al,39H jle ok sub al,10 ok:loop up55 mov di,begoff+162 mov cl,5 mov al,30H call numtype mov cl,5 inc al call numtype inc al mov cl,3 call numtype ret numtype:stosb add di,33 stosb add di,125 loop numtype ret hexdisplay:mov bl,0 mov di, cs:upleft add di,328 mov bp,16 wr:call eightch call eightch add di,124 dec bp jnz wr hexnumbers:mov di,168+hexbegoff call puthexhead mov di,322+hexbegoff mov si,offset hexheader mov cx,16 up112:movs es:byte ptr[di], cs:[si] inc di mov byte ptr es:[di],'0' add di,158 loop up112 ret eightch:mov cx,8 jmp short ov898 fivech:mov cx,5 ov898:mov ah,mainattr cmp cs:screen,0B000H jne ov899 mov ah,monomainattr ov899:mov al,bl stosw inc bl loop ov899 inc di inc di ret fewhexnos:mov di,168+attrbegoff call puthexhead mov di,322+attrbegoff mov cx,8 mov al,'0' up02:stosb inc di mov byte ptr es:[di],'0' add di,158 inc al loop up02 ret puthexhead:mov cx,8 mov si,offset hexheader ytr:movs es:byte ptr[di], cs:[si] inc di loop ytr inc di inc di mov cl,8 lp9:movs es:byte ptr[di], cs:[si] inc di loop lp9 ret hexheader db '0123456789ABCDEF' showbx:mov cx,2 ;cx 4 or 2 shows bx or bh llp:rol bx,1 rol bx,1 rol bx,1 rol bx,1 push bx and bx,000FH mov al,cs:hexheader[bx] mov ah,attrlabel stosw pop bx loop llp ret decshowal: ;converts al to decimal aam mov bl,al or bl,'0' xchg al,ah aam or ax,'00' mov dh,al mov al,ah mov ah,attrlabel stosw mov al,dh stosw mov al,bl stosw ret ;-------------------------------------------------------------------------- asciicuroff dw begoff+171 asciihexcuroff dw hexbegoff+329 asciionflag db 0 ascbuffptr dw 0 asciitowrite db 0 ;flag asciiwait:mov cs:asciionflag,0FFH ;set it mov cs:buffflag,0 mov di,cs:asciicuroff mov ax,es cmp cs:upleft,begoff je ov734 mov di,cs:asciihexcuroff ov734:mov bh,asccolxor mov ax,ds cmp ah,0B8H ;color? je amark mov bh,ascmonoxor amark:cmp cs:upleft, begoff je ov87 mov cs:asciihexcuroff,di jmp short ov88 ov87:mov cs:asciicuroff,di ov88:xor es:[di],bh xor ah,ah int 16H xor es:[di],bh xor bp,bp asccomp:cmp ah,cs:asccoms[bp] je ascgotcom inc bp cmp bp,offset ascaddr - offset asccoms ;no. of commands jl asccomp jmp amark ascgotcom:shl bp,1 jmp cs:ascaddr[bp] ascup: sub di,160 ;UpArr ch2:or di,di jge amark add di,160 jmp short amark ascdn: add di,160 ;DnArr ch1:cmp di,4000 jl amark sub di,160 jmp short amark ascrt: inc di ;RtArr inc di jmp short ch1 asclf: dec di dec di ;LfArr jmp short ch2 aschome: cmp cs:upleft,begoff je ov91 mov di,hexbegoff+329 jmp amark ov91:mov di,begoff+171 jmp amark ascend: cmp cs:upleft,begoff je ov92 mov di,hexbegoff+329+2432 jmp amark ov92:mov di,begoff+329+1816 jmp amark ascins: cmp cs:buffflag,0 jne ov71 mov cs:ascbuffptr,0 ov71:call getasc mov cs:ascwriteptr,0 mov cs:asciitowrite,0FFH ;set it mov cs:worktodoflag,0FFH ascesc: jmp restore ascprn: xor dx,dx ;PrtSc xor ah,ah mov al,es:[di-1] int 17H jmp amark asciienter:mov cs:ascwriteptr,0 mov cs:asciitowrite,0FFH ;set it mov cs:worktodoflag,0FFH jmp endint buffflag db 0 ascbuff: cmp cs:buffflag,0 jne ov36 not cs:buffflag mov cs:ascbuffptr,0 ov36:call getasc jmp amark getasc: mov al,es:[di-1] ;get char from screen; put in buffer mov bp,cs:ascbuffptr ;location for next char cmp bp,64 jl ov23 pop ax jmp restore ov23:mov byte ptr cs:ascbuffer[bp],al inc cs:ascbuffptr ret ascwriteptr dw 0 ent2: mov bx,cs:ascwriteptr mov al,cs:ascbuffer[bx] xor ah,ah ;Move word (char. and scan code) mov word ptr ds:[bp],ax ;into buffer and mov ds:[1CH],cx ;change buffer tail pointer. inc cs:ascwriteptr inc bx cmp bx,cs:ascbuffptr jge ov13 jmp send ov13:mov cs:asciitowrite,0 jmp done ;---------------------------------------------------------------------- restore: push cs pop ds mov si,offset store mov di,upleft mov bp,numrows up65:mov cx,numcols rep movsw add di,160 sub di,numcols sub di,numcols dec bp jnz up65 mov asciionflag,0 jmp endint ;========================================================================= stopstart:not cs:worktodoflag jmp endint slowspeed:mov cs:fastflag,0 jmp endint fastspeed:mov cs:fastflag,0FFH jmp endint backsp: mov cs:carretflag,0 jmp endint carrets: mov cs:carretflag,0FFH jmp endint zilch: mov cs:carretflag,'Z' jmp endint ;-------------------------------- stuffptr dw 0 tnumrows dw 0 rowptr dw 0 tnumcols dw 0 colptr dw 0 worktodoflag db 0 goingbackflag db 0 downflag db 0 docrflag db 0 timeint: cmp cs:worktodoflag,0 je tend cld sti push ds push cx push bx push ax push bp mov bp,40H mov ds,bp loo: mov bp,ds:[1CH] mov cx,bp inc cx inc cx cmp cl,3EH jl ov sub cl,20H ov:cmp cx,ds:[1AH] je send ;If equal, buffer full; exit. cmp cs:asciitowrite,0 je ov9 jmp ent2 ov9:cmp cs:stuffptr,0 je done call getword ;Else, move word (char. and scan code) mov word ptr ds:[bp],ax ; into buffer and mov ds:[1CH],cx ; change buffer tail pointer. cmp cs:rowptr,0 je done cmp cs:stuffptr,0 jle done cmp cs:fastflag,0 jz send jmp loo done: mov cs:worktodoflag,0 send: pop bp pop ax pop bx pop cx pop ds tend: jmp dword ptr cs:[oldtvec] getword: cmp cs:carretflag,'Z' jne b99 xor ah,ah mov bx,cs:stuffptr mov al,cs:stuff[bx] dec cs:stuffptr ret b99:cmp cs:docrflag,0 ;See if we need a Carriage Return. je b0 mov cs:docrflag,0 mov ax,1C0DH jmp b6 b0:cmp cs:downflag,0 ;See if we need a DownArrow. je b1 mov cs:downflag,0 mov ax,5000H ;DnArr b6:mov bx,cs:tnumcols mov cs:colptr,bx rr:ret b1:cmp cs:goingbackflag,0 ;See if we need LeftArrow. je b2 mov ax,4B00H ;LfArr dec cs:colptr jne rr mov cs:downflag,0FFH ;Need a down next. mov cs:goingbackflag,0 ret b2:xor ah,ah ;Get character from stuff. mov bx,cs:stuffptr mov al,cs:stuff[bx] dec cs:stuffptr dec cs:colptr jnz rr dec cs:rowptr ;Another row to do if this not zero. jz rr cmp cs:carretflag,0 je b3 mov cs:docrflag,0FFH ret b3:mov cs:goingbackflag,0FFH ;go back mov bx,cs:tnumcols mov cs:colptr,bx ret ;===================================================== prtbox: call setup ;bp=no.cols, cx=no.rows mov bx,cx dec si ;offset to begin xor dx,dx up71:mov cx,bp lp6:lodsb mov ah,0 int 17H inc si loop lp6 mov ax,0DH int 17H mov ax,0AH int 17H add si,160 sub si,bp sub si,bp dec bx jnz up71 jmp cesc ;======================================================== ccopy: call setup ;cx no. rows, bp no. cols dec si mov di,si lp08:mov dx,bp ;no. cols up13:movsb inc di inc si dec dx jnz up13 add si,160 sub si,bp sub si,bp mov di,si loop lp08 jmp cesc ;---------------------------------------------- cswitch: push es push ds pop es pop ds xor cs:xorattr,xorxor jmp cmarknwait ;---------------------------------------------------- immenter:call cccut and cs:on_flag,0FEH insert: cli push cs pop ds mov worktodoflag,0FFH mov asciitowrite,0 mov bx,tnumcols mov colptr,bx mov ax,tnumrows mov rowptr,ax mul bl mov stuffptr,ax mov goingbackflag,0 mov downflag,0 sti jmp endint ;------------------------------------------------------ beginflag db 0 cut: test cs:on_flag,1 je ov284 jmp endint ov284: or cs:on_flag,1 mov cs:beginflag,0 call aim ;ds points to screen mov ah,3 xor bh,bh int 10H ;cursor row, col in dx (upper left of box) mov bx,dx ;bx contains row, col of lower right cmarknwait:call markbox xor ah,ah int 16H push ax call markbox pop ax xor bp,bp ccomp:cmp ah,cs:cutcoms[bp] je gotcutcom inc bp cmp bp,offset cutaddr - offset cutcoms ;no. of commands jl ccomp jmp cmarknwait gotcutcom:shl bp,1 jmp cs:cutaddr[bp] cdnarr: cmp bh,24 jge j1 inc bh cmp cs:beginflag,0 jne j1 mov dx,bx j1:jmp cmarknwait cuparr: cmp cs:beginflag,0 jne ov6 or bh,bh je j1 dec bh dec dh jmp cmarknwait ov6:cmp bh,dh jle j1 dec bh jmp cmarknwait crtarr: cmp bl,79 jge j1 inc bl cmp cs:beginflag,0 jne j1 mov dx,bx jmp cmarknwait clfarr: cmp cs:beginflag,0 jne ov7 or bl,bl je j1 dec bl dec dl jmp cmarknwait ov7:cmp bl,dl jle j1 dec bl jmp cmarknwait home: sub bx,dx xor dx,dx jmp cmarknwait end: mov ax,184FH sub ax,bx add bx,ax add dx,ax jmp cmarknwait tack: cmp cs:beginflag,1 je ccut mov cs:beginflag,1 jcm:jmp cmarknwait ccut: call cccut cesc: and cs:on_flag,0FEH jmp endint cccut: call setup ;bp=no.cols, cx=no.rows mov cs:tnumrows,cx mov cs:tnumcols,bp mov bx,cx dec si ;offset to begin mov di,offset stuff mov ax,bp mul bl mov cs:stuffptr,ax ;no.chars add di,ax mm:mov al,ds:[si] mov cs:[di],al dec di inc si inc si dec bp jnz mm mov bp,cs:tnumcols add si,160 sub si,bp sub si,bp loop mm ret cpgdn: or dh,dh je jcm dec dh dec bh jmp cmarknwait cpgup: cmp bh,24 je jcm inc dh inc bh jmp cmarknwait cgplus: cmp bl,79 je jcm inc bl inc dl jmp cmarknwait cgminus: or dl,dl je jcm dec dl dec bl jmp cmarknwait markbox: call setup mov al,cs:xorattr nextrw:mov di,bp xx:xor byte ptr ds:[si],al inc si inc si dec di jnz xx add si,160 sub si,bp sub si,bp loop nextrw ret setup: mov al,dh ;start rows mov cl,dh mov bp,dx ;bp=start col in low byte and bp,0FFH mov ch,160 mul ch ;ax contains offset of start,but.. xor ch,ch ;cx=start rows mov si,ax inc si push dx xor dh,dh add si,dx add si,dx ;offset to start pop dx neg bp add bp,bx and bp,0FFH inc bp ;no.cols to mark push bx xchg bh,bl xor bh,bh sub bx,cx inc bx mov cx,bx ;no. of rows pop bx ret ;-------------------------------------------------------------------------- setdraw: shr bp,1 sub bp,15 mov cs:drawmode,bp jmp endint drawchars db '┌┬┐─├┼┤│└┴┘' db '╔╦╗═╠╬╣║╚╩╝' db '╒╤╕═╞╪╡│╘╧╛' db '╓╥╖─╟╫╢║╙╨╜' db '▌▐▀«█■▄»░▒▓' db 'αßτΓδεΘΣµπσ' draw: cli push bp push es push bx push cx push dx push si mov bl,al ;between 0 and 10 mov dl,al ;save it here too call reset_keyboard mov ax,cs:drawmode mov si,ax ;store drawmode dec ax mov cl,11 mul cl ;ax contains 11 times drawmode-1 add bl,al xor bh,bh mov al,cs:drawchars[bx] mov bp,40H mov ds,bp call put_ax cmp si,4 ;check drawmode ja ov54 or si,si je ov54 cmp cs:drawdown,1 jne ov57 cmp dl,7 jne ov54 mov ax,4B00H call put_ax mov ah,50H call put_ax jmp short ov54 ov57:cmp cs:drawdown,-1 jne ov54 cmp dl,7 jne ov58 mov ax,4B00H call put_ax mov ah,48H call put_ax jmp short ov54 ov58:cmp dl,3 jne ov54 mov ax,4B00H call put_ax call put_ax ov54: jmp endint2 put_ax: mov bp,ds:[1CH] mov cx,bp inc cx inc cx cmp cx,3EH jl ov8 sub cx,20H ov8:cmp cx,ds:[1AH] je ov721 ;If equal, buffer full; exit. mov word ptr ds:[bp],ax ;Else, move word (char. and scan code) mov ds:[1CH],cx ;into buffer and change buffer tail pointer. ov721:ret setdrawdown:mov cs:drawdown,1 jmp endint unsetdrawdown:mov cs:drawdown,0 jmp endint setdrawup:mov cs:drawdown,-1 jmp endint ;---------------------------------------------------------------------------- store label word ;dw 510 dup () stuff = offset store +1020 ;db 2001 dup () ;############################################################################## install: mov ax,3509H ;9 is keyboard interrupt int 21H ;get old int vector mov word ptr cs:[oldvec],bx ;and save it mov word ptr cs:[oldvec+2],es mov dx,offset myint mov ax,2509H ;set new int vector with ds:dx int 21H mov ax,3508H ;timer interrupt int 21H ;get old int vector mov word ptr cs:[oldtvec],bx ;and save it mov word ptr cs:[oldtvec+2],es mov dx, offset timeint mov ax,2508H ;set new int vector with ds:dx int 21H mov dx,offset install ;prepare to leave resident add dx,3021 int 27H cseg ends end begin