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Assembly Source File | 1988-10-05 | 61.5 KB | 1,194 lines

PAGE 60,132 TITLE SHOWTSRS - Program to scroll MAPMEM data ; ; Author: Tom Gilbert ; 7127 Lafayette Ave. ; Kansas City, KS ; (913) 299-2701 ; ; Written for Turbo Assembler, version 1.0 ; and Turbo Linker ; Assemble with TASM SHOWTSRS then ; Link with TLINK SHOWTSRS ; DOSSEG .MODEL small .STACK 100h .DATA headline DB " Allocated Memory Map - Version 1.0 - " DB " by Tom Gilbert's Heart&Mind",13,10 DB " Syntax: > ShowTSRs" DB " [anything for HELP]",13,10 DB " PSP MCB files bytes owner command line " DB " chained/hooked INT vectors",13,10 DB " ---- ---- ----- ----- --------- ---------------- " DB " --------------------------",13,10 helpdat label byte DB " ***** ShowTSRs HELP *****",13,10 DB 13,10 DB " ShowTSRs displays the map of memory blocks and interrupts",13,10 DB " used by TurboPower Software DISABLE and RELEASE programs.",13,10,13,10 DB " PSP is the Program Segment Prefix segment address of a program",13,10 DB " or the PSP segment address for an environment of a program",13,10 DB 13,10 DB " MCB is the Memory Control Block for either of the above and is",13,10 DB " always the paragraph preceeding the controlled memory block",13,10 DB 13,10 DB " Listings show a line for each MCB. A Program's Environment is",13,10 DB ' the first of equal PSP segments. Program OPEN "files" include',13,10 DB ' the 5 standard DOS devices. Block lengths are decimal "bytes".',13,10 DB 13,10 DB " Because owner filenames are read from the end of a program's",13,10 DB " environment copy, ShowTSRs requires DOS Version 3.0 or higher!",13,10 DB ' Programs which release their environments are "command" except',13,10 DB " for TurboPower's FMARK which has another known name location.",13,10 DB 13,10 DB " Command Line Parameters are reproduced for the first 16 bytes.",13,10 DB " Those followed by an elipsis (...) exceed 16 bytes.",13,10,13,10 DB ' Interrupts which are "chained" from program to program will be',13,10 DB " displayed after WATCH is installed. Otherwise, only vectors at",13,10 DB ' the top of the chain (called "hooked" vectors) are displayed.',13,10 DB 13,10 DB " EGA Info 8 bytes and Inter-application Communication",13,10 DB " Area 16 bytes are provided in HEX & ASCII dump format.",13,10,13,10 DB " If expanded memory is installed, the Manager's Version number,",13,10 DB " Page Frame Segment (through which memory is windowed) and block",13,10 DB " information will be shown. User programs providing a name will",13,10 DB " have it displayed.",13,10 DB " ***** End of ShowTSRs Help *****",13,10 helplen equ $-helpdat statline DB " Line: of " stathelp DB " Move: PGUP PGDN HOME END or Use ESC key to" statfile DB " Exit: ShowTSRs " cmdparam DB " ",13 datf DB 0 ; Command flag 0 = Data else HELP spsp DW ? ; Segment of ProgramSegmentPrefix tmem DW ? ; Total Available Conventional RAM columns EQU 80 ; Number of columns used per row rows DW 24 ; Number of last row for display datrows DW 20 ; Number of data rows per page lastrow DW 24 ; Number of last display row cell LABEL WORD ; Cell (character and attribute) char DB " " ; Initialize to space attr DB ? ; Attribute mode DB ? ; Initial mode pag DB ? ; Initial display page newvid DB 0 ; Video change flag cga DB 1 ; CGA flag - default yes vidadr DW 0B800h ; Video buffer address - default CGA mono EQU 0B000h ; Monochrome address statatr DB 030h ; Color default - black on cyan bwstat EQU 070h ; B&W default - black on white scrnatr DB 017h ; Color default - white on blue bwscrn EQU 007h ; B&W default - white on black pbuffer DW 0 ; Position in buffer (offset) sbuffer DW ? ; Base of buffer (segment) lbuffer DW ? ; Length of buffer linenum DW ? ; Data buffer line lastnum DW ? ; Last buffer line exkeys DB 71,72,73,79,80,81 ; Extended key codes lexkeys EQU $-exkeys ; Table of keys extable DW homek,upk,pgupk,endk,downk,pgdnk,nonek EgaHdg DB " EGA Information Area at 0040:00A8 " EgaLen equ $-EgaHdg IcaHdg DB " Inter-application Communications Area:",13,10," 0040:00F0 " IcaLen equ $-IcaHdg EmsName DB "EMMXXXX0" ; EMM standard Name tpages DW 0 ; Page accumulator emserm DB 13,10," *** Expanded Memory NOT Installed or NOT Working ***" emerml equ $-emserm emmshdg DB " block pages KBytes UserName (Expanded Memory - Version " emmlen1 equ $-emmshdg DB ")",13,10 dashes DB " ----- ----- ------ -------- (LIM page frame address - " emmlen2 equ $-emmshdg-emmlen1 freem DB " free" totlm DB " total" fmark DB "FM2.5 TSR" envcm DB "<environment>" doscm DB "DOSCVcommand <CONFIG.SYS>" disam DB "*** D I S A B L E D ***" disalen equ $-disam WatchS DB "TSR WATCHER" ; WATCH Command Line Parameter WatchF DW 0 ; MCB Index to WATCH PSP if Set startl DW 0 ; Destination Index at Start of a Line vpos DW ? ; WATCH Next PSP Position MCB STRUC pspa DW 0 ; Program Segment Prefix or Mark Address mcba DW 0 ; Memory Allocation Block Address mcbl DW 0 ; Length in paragraphs to next MCB MCB ENDS MCBS MCB 100 DUP (<>) ; Array of MCB Structures .CODE Main PROC mov ax,@data ; Destination is data mov es,ax ; flag with length of mov di,OFFSET datf ; command line mov si,80h ; parameter movsb mov es:spsp,ds ; Preserve PSP Segment mov ds,ax ; Set Data Segment Register cli ; Turn off interrupts mov ss,ax ; Make SS and mov sp,OFFSET STACK ; SP relative to DGROUP sti mov bx,sp ; Convert stack pointer to mov cl,4 ; number of stack paragraphs shr bx,cl add ax,bx ; Add SS to get end of program sub ax,spsp ; Subtract start to get length mov es,spsp ; Release memory after program mov bx,ax mov ah,4Ah int 21h mov bx,0FFFFh ; Request all GetMore: mov ah,48h int 21h jc GetMore ; remaining memory mov es,ax ; Set Extra Segment Register mov sbuffer,ax ; Save buffer segment and mov lbuffer,bx ; actual length allocated add ax,bx ; Calculate and store total mov tmem,ax ; available conventional RAM mov di,pbuffer ; Point to beginning and mov ah,30h ; Get DOS version int 21h cmp al,3 ; If Version < 3.0 jc HelpOpt ; then provide HELP test datf,0FFh ; Or If command parameter jnz HelpOpt ; then provide HELP call WorkMCBs ; Or If invalid MCBs jc HelpOpt ; then provide HELP call InfoMap ; else add info areas mov si,OFFSET EmsName ; and EMS information call EmmsMap ; if EMS is installed jmp SHORT EndData HelpOpt: mov cmdparam,"?" ; Show HELP requested mov si,OFFSET helpdat ; and store help data mov cx,helplen rep movsb EndData: call EndCount ; Count buffer mov ax,linenum ; data lines and mov lastnum,ax ; store the count mov lbuffer,di ; and store length call Video ; Adjust for mode & adapter mov dx,2B00h ; Hide cursor off screen xor bh,bh mov ah,2 int 10h call homek ; Display 1st Page mov ax,datrows ; If more data sub ax,lastnum ; lines to show jc nextkey ; then accept keys dec ax ; else modify sub lastrow,ax ; last row and jmp SHORT quit ; exit ShowTSRs nextkey: mov ah,7 ; Get a key int 21h cmp al,0 ; If a null je extended ; then Must be extended code cmp al,27 ; else If NOT ESCape jne nextkey ; then Ignore unknown command quit: mov es,sbuffer ; else release buffer mov ah,49h int 21h cmp newvid,1 ; If video not changed jne thatsall ; then that's all mov al,mode ; else Restore video mode, xor ah,ah int 10h mov al,pag ; page, mov ah,5 int 10h ; and cursor thatsall: mov cx,lastrow ; Load last row and mov ax,rows ; Calculate rows to sub ax,cx ; be scrolled blank xchg cl,ch ; Set Upper Left and mov dx,cx ; copy in order to add dh,al ; adjust Lower Right mov dl,columns-1 ; corner of window mov ah,6 ; Call ROM BIOS to mov bh,7 ; clear the window int 10h mov dx,cx ; Set cursor above dec dh ; window so prompt xor bh,bh ; is on last line mov ah,2 ; when Exit to DOS int 10h mov ax,4C00h int 21h ; For < DOS 2.00 extended: mov ah,7 ; Get extended code int 21h push es push ds ; Load DS into ES pop es mov di,OFFSET exkeys ; Load address and mov cx,lexkeys+1 ; length of key list repne scasb ; Find position pop es sub di,(OFFSET exkeys)+1; Point to key shl di,1 ; Adjust pointer for word addresses call extable[di] ; Call appropriate procedure jmp nextkey homek: mov pbuffer,0 ; HOME - Zero the buffer mov ax,pbuffer ; position for 1st page jmp SHORT GoPage upk: mov ax,-1 ; UP - GoBack one line if room jmp SHORT GoPage pgupk: mov ax,datrows ; PGUP - Page back neg ax ; Up to page lines jmp SHORT GoPage endk: mov ax,lbuffer ; END - Get last byte of file mov pbuffer,ax ; Make it the file position mov ax,datrows ; Go Backward enough neg ax ; lines for last page jmp SHORT GoPage downk: mov ax,1 ; GoForward 1 line if room jmp SHORT GoPage pgdnk: mov ax,datrows ; PGDN - Go forward <= page GoPage: push ax call Pager nonek: retn ; Ignore unknown key Main ENDP Video PROC push es ; Preserve Extra Segment mov ah,12h ; Call EGA status function mov bl,10h sub cx,cx ; With Clear status bits int 10h sub ax,ax ; If status is still Clear jcxz modechk mov es,ax ; or if EGA is NOT active test BYTE PTR es:[487h],1000b jnz modechk ; then check CGA or Mono Mode mov ax,1130h ; else get EGA information int 10h mov al,dl ; Make lines per screen cbw ; into a Word Value mov rows,ax ; Reset number of the mov lastrow,ax ; last row and number sub ax,4 ; of rows available for mov datrows,ax ; data from their defaults dec cga ; Clear the CGA Flag modechk: pop es ; Restore Extra Segment mov ah,0Fh ; Get video mode int 10h mov mode,al ; Save initial mov pag,bh ; mode and page mov dl,al ; Work on copy cmp dl,7 ; If mono 7 je loadmono ; then Set mono cmp dl,15 ; else if NOT mono 15 jne graphchk ; then Check graphics loadmono: mov vidadr,mono ; else Load mono address mov statatr,bwstat ; Set B&W defaults for status line mov scrnatr,bwscrn ; and screen background dec cga ; Set as NOT CGA cmp al,15 ; If NOT mono 15 jne VidExit ; then Done mov dl,7 ; else Set standard mono jmp SHORT chmode graphchk: cmp dl,7 ; 7 or higher? jg color ; 8 to 14 are color (7 and 15 done) cmp dl,4 ; 4 or higher? jg bnw ; 5 and 6 are probably black and white je color ; 4 is color test dl,1 ; Even? jz bnw ; 0 and 2 are black and white color: cmp dl,3 ; If mode 3 je VidExit ; then Done mov dl,3 ; else use color text mode jmp SHORT chmode bnw: mov statatr,bwstat ; Set B&W defaults for status line mov scrnatr,bwscrn ; and screen background cmp dl,2 ; If mode 2 je VidExit ; then Done mov dl,2 ; else use B&W text mode chmode: mov al,dl ; Set video mode xor ah,ah int 10h mov ax,0500h ; Set video page 0 int 10h mov newvid,1 ; Set flag VidExit: ret Video ENDP ; Procedure EndCount - Go backward to count lines in file ; Input ES:DI has buffer position ; Output Modifies "linenum" EndCount PROC push di std ; Go backwards to mov al,13 ; Search for CR mov linenum,0 ; Initialize line count findstrt: mov cx,0FFh ; Load maximum character count cmp cx,di ; If NOT Near start of buffer jl notnear2 ; then use maximum count mov cx,di ; else search jcxz found ; only to start notnear2: repne scasb ; If previous CR NOT found jcxz found ; then must be at start inc linenum ; else adjust line count jmp SHORT findstrt ; and continue search found: pop di ; Restore index cld ; and direction ret EndCount ENDP ; Procedure Pager - Displays status and text lines ; Input Stack variable: lines to scroll (negative up, positive down) ; Output Displays lines between first and last to screenn Pager PROC push bp mov bp,sp mov di,pbuffer ; Index to buffer position mov cx,[bp+4] ; Get count argument for mov ax,10 ; linefeeds to count and or cx,cx ; If No lines to count jz show ; then show the page jg forward ; else Count Forward call GoBack ; or Backward if neg jmp SHORT show ; before showing page forward: call GoForwd show: call EndCount ; Count to first mov ax,linenum ; line number to show add ax,datrows ; Adjust to bottom line cmp ax,lastnum ; If NOT past last jle lineok ; then number is ok mov ax,lastnum ; else make it last lineok: push ds ; Set data segment into pop es ; extra segment register push ax ; Arg 1 - IntegerLSW xor ax,ax push ax ; Arg 2 - IntegerMSW mov ax,OFFSET statline[6] push ax ; Arg 3 - Destination mov ax,3 push ax ; Arg 4 - Decimal Places call BinToDStr ; Convert to string mov ax,lastnum push ax ; Arg 1 - IntegerLSW xor ax,ax push ax ; Arg 2 - IntegerMSW mov ax,OFFSET statline[12] push ax ; Arg 3 - Destination mov ax,3 push ax ; Arg 4 - Decimal Places call BinToDStr ; Convert to string mov es,sbuffer ; Restore ES to sbuffer mov bl,statatr ; Set attribute for mov BYTE PTR cell[1],bl ; status & headings xor bx,bx ; Initialize counter mov si,OFFSET headline ; for heading lines hdloop: push bx ; Preserve counter push ds ; Arg 1 - Segment push si ; Arg 2 - Offset push bx ; Arg 3 - Display Line push cell ; Arg 4 - Char/Attrib call CellWrt ; Write one push ss ; Restore DGroup pop ds ; into DS register pop bx ; Restore line count and mov si,ax ; get returned position inc bx ; Count the heading line cmp bx,4 ; If NOT yet 4 lines jc hdloop ; then loop until 4 mov al,scrnatr ; Change attribute for mov BYTE PTR cell[1],al ; data buffer display mov si,pbuffer ; Index to pbuffer datloop: push bx ; Preserve counter push sbuffer ; Arg 1 - Segment push si ; Arg 2 - Offset push bx ; Arg 3 - Display Line push cell ; Arg 4 - Char/Attrib call CellWrt ; Write line push ss ; Restore DGroup pop ds ; into DS register pop bx ; Restore counter and inc bx ; Count row displayed cmp ax,lbuffer ; If position => end jnc pagedone ; then page is done mov si,ax ; else update pointer cmp bx,rows ; If short of last row jc datloop ; then loop Until done pagedone: mov al,statatr ; Load attribute for mov BYTE PTR cell[1],al ; writing status line mov si,OFFSET statline push ds ; Arg 1 - Segment push si ; Arg 2 - Offset push bx ; Arg 3 - Display Line push cell ; Arg 4 - Char/Attrib call CellWrt ; Write status line mov es,sbuffer ; Restore ES to buffer pop bp ; Discard stack ret 2 ; count argument Pager ENDP ; Procedure Retrace ; Purpose Writes cell during horizontal retrace (CGA) ; Input ES:DI has screen buffer position, AX has cell ; Output Character to screen buffer Retrace PROC push bx mov bx,ax ; Save character lscan2: in al,dx ; Look in the port shr al,1 ; until it goes low jc lscan2 cli hscan2: in al,dx ; Look in the port shr al,1 ; until it goes high jnc hscan2 mov ax,bx ; Restore and write it stosw sti pop bx ret Retrace ENDP ; Procedure CellWrt - Writes a line to screen buffer ; Input Stack variables (segment,offset,line,cell) ; Output Line to screen buffer CellWrt PROC push bp mov bp,sp sub dx,dx ; Clear as flag for scan cmp cga,1 ; CGA? jne noscan mov dx,03DAh ; Load port # noscan: mov es,vidadr ; Load screen buffer segment mov ds,[bp+10] ; Buffer segment mov si,[bp+8] ; Buffer position mov cx,80 ; Cells per row mov ax,[bp+6] ; Starting row mov bx,80*2 ; Bytes per row mul bl ; Figure columns per row mov di,ax ; Load as destination mov ax,[bp+4] ; Set Attribute movechar: lodsb ; Get character cmp al,13 ; If End of Data Line je fillspc ; then end display line or dx,dx ; else if NOT CGA je notCGA ; then Write without delay call Retrace ; else Write during retrace loop movechar ; until End of Data Line jmp SHORT nextline ; or end of display line notCGA: stosw loop movechar ; If end of display line jmp SHORT nextline ; then find End of Data Line fillspc: mov al," " ; Fill with space or dx,dx ; If NOT CGA je space2 ; then direct space1: call Retrace ; else Write during retrace loop space1 ; until end of display line inc si ; Adjust for Data line LF jmp SHORT exit ; Done space2: rep stosw ; Write inc si ; Adjust for LF jmp SHORT exit ; Done nextline: mov ah,10 ; Search for Data line feed chklf: lodsb ; Load and compare cmp al,ah ; If NOT Data Line LF loopne chklf ; then contine until exit: mov ax,si ; Return position pop bp ret 8 CellWrt ENDP ; Procedure Search Backward or Forward through buffer ; Input CX has number of lines; ES:DI has buffer position ; Output Updates "pbuffer" and DI index GoBack PROC std ; Go backward neg cx ; Make count positive inc cx ; Use one extra going up findb: push cx ; Preserve counter mov cx,0FFh ; Load maximum character count cmp cx,di ; If NOT near start of buffer jc scanb ; then use maximum count mov cx,di ; else search only to start scanb: repne scasb ; If previous LF NOT found jcxz atstart ; then must be at start pop cx ; else loop until start/done loop findb add di,2 ; Adjust for cr/lf jmp SHORT GoBackX ; Return position atstart: pop cx sub di,di ; Set index and GoBackX: mov pbuffer,di ; pointer and ret ; Return position GoBack ENDP GoForwd PROC cld ; Go forward findf: mov pbuffer,cx ; Preserve count mov cx,0FFh ; Load maximum character count repne scasb ; If next LF NOT found jcxz atend ; then must be at end mov cx,pbuffer ; else If past end cmp di,lbuffer ; then make at end jae atend ; else loop until loop findf ; at end or found mov pbuffer,di call EndCount ; Get line number mov cx,lastnum ; If last number sub cx,datrows ; minus display cmp cx,linenum ; is => linenum jnc GoForX ; then pbuffer Ok atend: mov di,lbuffer ; Set index to end mov cx,datrows ; Set page lines to neg cx ; back-up during mov al,10 ; GoBack procedure call GoBack GoForX: ret ; Return pbuffer GoForwd ENDP ; Procedure BinToDStr Converts integer to right-justified decimal string ; Input Stack arguments: (integerLSW,integerMSW,near-address,places) ; Output BX:DX has leading:significant places written BinToDStr PROC push bp mov bp,sp mov ax,[bp+10] ; Arg 1 (LSW) mov dx,[bp+8] ; Arg 2 (MSW) mov di,[bp+6] ; Arg 3 (addr) sub cx,cx ; Clear counter mov bx,10 ; Divide by 10 getdigit: div bx ; Get last digit as remainder add dl,"0" ; Convert to ASCII push dx ; Save on stack sub dx,dx ; Clear top or ax,ax ; Until Quotient loopnz getdigit ; becomes zero neg cx ; Negate and mov bx,cx ; save count mov dx,[bp+4] ; Arg 4 (places) sub dx,bx ; If <= 0 to go jle putdigit ; then abort mov cx,dx ; else fill leading or al," " ; places with spaces rep stosb mov cx,bx ; Restore count putdigit: pop ax ; Add digit stosb ; characters loop putdigit mov ax,[bp+4] ; Return digit counts sub ax,bx ; leading/significant pop bp ; Discard stack ret 8 ; parameters BinToDStr ENDP Val2ASCh PROC mov ah,al ; Preserve byte value and al,0F0h ; Isolate high shr al,1 ; nibble shr al,1 ; into shr al,1 ; low shr al,1 ; nibble call Val2Dig ; Convert to and stosb ; store ASCII HEX mov al,ah ; Restore byte value and al,0Fh ; Isolate low nibble Val2Dig: add al,30h ; Convert to display cmp al,3Ah ; If decimal digit jc V2DX ; then ASCII numeral add al,7 ; else make HEX alpha V2DX: ret Val2ASCh ENDP PgsAndKbs PROC push ax ; Preserve PagesLSW xor dx,dx ; Clear PagesMSW mov bx,9 ; Set digit places push ax ; Arg 1 - PagesLSW push dx ; Arg 2 - PagesMSW push di ; Arg 3 - destination push bx ; Arg 4 - digit places call BinToDStr ; Store decimal pages pop ax ; Restore PagesLSW xor dx,dx ; Clear Extension mov bx,16 ; Convert Pages to mul bx ; KiloBytes LSW & MSW mov bx,9 ; Set digit places push ax ; Arg 1 - KiloByteLSW push dx ; Arg 2 - KiloByteMSW push di ; Arg 3 - destination push bx ; Arg 4 - digit places call BinToDStr ; Store decimal KiloBytes ret PgsAndKbs ENDP SortMCBs PROC push cx ; Preserve PSP Counter push bx ; and MCB Index Pointer dec cx ; Set Compare Counter SLoop: add bx,6 ; Advance MCB Index mov ax,MCBS[bx].mcbl ; Store mov MCBS.mcbl,ax ; length mov ax,MCBS[bx].mcba ; MCB mov MCBS.mcba,ax ; and mov ax,MCBS[bx].pspa ; PSP addresses in mov MCBS.pspa,ax ; base array member cmp ax,MCBS[bx+6].pspa ; If PSPs Ascending jle LoopS ; then loop until done mov ax,MCBS[bx+6].pspa ; else mov MCBS[bx].pspa,ax ; swap mov ax,MCBS[bx+6].mcba ; the mov MCBS[bx].mcba,ax ; data mov ax,MCBS[bx+6].mcbl ; for mov MCBS[bx].mcbl,ax ; the mov ax,MCBS.mcbl ; two mov MCBS[bx+6].mcbl,ax ; array mov ax,MCBS.mcba ; members mov MCBS[bx+6].mcba,ax ; that mov ax,MCBS.pspa ; were mov MCBS[bx+6].pspa,ax ; compared LoopS: loop SLoop ; until all compared mov al," " ; Use Spaces to mov cx,lbuffer ; fill data buffer push di ; Preserve pointer rep stosb ; before filling and pop di ; Restore Pointer pop bx ; Restore MCB Index pop cx ; and PSP Counter ret ; MCBS[0] last PSP SortMCBs ENDP IsEnviron PROC mov cx,MCBS[bx].mcba ; Convert Environment inc cx ; MCBA to Environment mov es,cx ; Set-Up Segment:Index to xor di,di ; search through mov ax,MCBS[bx].mcbl ; Environment Length mov cx,4 ; multiplied by 16 to shl ax,cl ; convert to bytes sub cl,4 ; for a double null xchg ax,cx SearchL: repne scasb ; If counter runs out jcxz NoFname ; then NOT environment dec cx ; else if double-null scasb ; is NOT found before jcxz NoFname ; counter has NOT run out jne SearchL ; then loop until either mov al,"." ; Search for an extent repne scasb ; If extent NOT found jne NoFname ; then copy "DOScommand" sub di,2 ; else isolate filename mov cx,10 ; Set Owner Area Length FnameLp: cmp BYTE PTR es:[di],":"; If character jz NameEnd ; is drive cmp BYTE PTR es:[di],"\"; or directory jz NameEnd ; then filename done dec di ; else backup to loop FnameLp ; next character NoFname: push ds ; Put Data Segment into pop es ; Extra Segment Register mov di,OFFSET doscm+2 ; Point short of "DOScommand" NameEnd: inc di ; Point to 1st mov si,di ; source character push ds ; Preserve Data Segment push es ; Transfer ES after mov es,sbuffer ; Restoring Buffer Segment pop ds ; into DS Register and mov di,bp ; Restore MapData Pointer mov dx,10 ; Calculate sub dx,cx ; filename xchg dx,cx ; length and rep movsb ; store Owner and add di,dx ; space to command line pop ds ; Restore Data Segment mov si,OFFSET envcm ; Point to "<environment>" mov cx,13 ; Store its length rep movsb ; into command line and add di,6 ; advance to vectors ret IsEnviron ENDP IsProgram PROC push ax ; Preserve PSP and push bx ; MCBS Index Pointer sub bx,6 ; Backup to Environment MCB call IsEnviron ; Get Owner Information mov cx,19 ; Backup to sub di,cx ; Command and mov al," " ; Space-It-Out rep stosb sub di,20 ; Restore Data pop bx ; Pointer, MCBS pop ax ; Index and PSP ret IsProgram ENDP OwnComVec PROC push cx ; Preserve StoLoop Counter inc di ; Advance and save mov bp,di ; pointer to Owner mov ax,MCBS[bx].pspa ; Get this MCB's PSP cmp bx,24 ; If MCB => 4th jnc CkEnvir ; then check if Environment cmp ax,MCBS[bx-6].pspa ; else if same as last PSP je IsEnvir ; then IS DOS Environment cmp ax,8 ; else if NOT CONFIG.SYS jne Ck4Mark ; then fall through to command mov si,OFFSET doscm ; else IS DOS configuration mov cx,3 ; copy rep movsb ; "DOS" add di,7 ; Advance add si,10 ; Pointers mov cx,12 ; copy rep movsb ; "<CONFIG.SYS>" jmp OCVExit ; and End the Line IsEnvir: mov si,OFFSET doscm+5 ; Owner is mov cx,7 ; "command" rep movsb ; copy and add di,3 ; Advance mov cx,13 ; pointer for mov si,OFFSET envcm ; "<environment>" rep movsb ; as command line jmp OCVExit ; and End the Line CkEnvir: cmp ax,MCBS[bx+6].pspa ; If NOT same as next jne CkYour6 ; then check behind call IsEnviron ; else IS Environment jmp SHORT OCVExit CkYour6: cmp ax,MCBS[bx-6].pspa ; If NOT same as last jne Ck4Mark ; then check for FMark call IsProgram ; else IS Program PSP push ds ; Preserve Data Segment mov ds,ax ; Set to PSP and jmp SHORT CmdParm ; Get Command Line Ck4Mark: push ds ; Preserve Data Segment mov es,ax ; Point into PSP at mov di,60h ; FMark signature area mov si,OFFSET fmark ; If FMark mov cx,9 ; signature rep cmpsb ; bytes match je IsFMark ; then is FMark pop ds ; else Restore Data and mov es,sbuffer ; MapData Buffer Segments mov di,bp ; Restore MapData Pointer mov si,OFFSET doscm+5 ; Point to "command" mov cx,7 ; bytes and copy to rep movsb ; Owner Area of MapData add di,2 ; Advance to Command Line push ds ; Preserve Data Segment mov ds,ax ; Set to PSP and jmp SHORT CmdParm ; Get Command Line IsFMark: push es ; Put PSP Segment AFTER mov es,sbuffer ; Restore MapData Buffer pop ds ; into DS Register mov si,di ; Set Source Index to mov cx,9 ; beginning of the sub si,cx ; FMark signature mov di,bp ; Segment and Pointer rep movsb ; Copy FMark Signature CmdParm: mov si,80h ; Point to Command Length lodsb ; Convert Parameter cbw ; Length to Word mov cx,19 ; Set length to Vectors xchg ax,cx ; and length of Command sub ax,cx ; Calculate difference cmp cx,16 ; If command <= 16 jle CopyCmd ; then copy all bytes mov cx,16 ; else copy 16 bytes mov ax,".." ; adding continuation CopyCmd: rep movsb ; If copied parameter cmp ax,".." ; is NOT continuation jne Go2Vecs ; then adjust to Vectors stosw ; else use continuation stosb ; elipsis (...) and xor ax,ax ; no further spaces Go2Vecs: add di,ax ; Adjust DI to Vectors pop ds ; Restore Data Segment mov ax,MCBS[bx].mcba ; If Memory Control Block inc ax ; Segment Address + 1 cmp ax,MCBS[bx].pspa ; is NOT EQUAL to PSP jne OCVExit ; then NO Interrupts call Vectors ; else store vectors OCVExit: mov ax,0A0Dh ; End the Data stosw ; Storage Line pop cx ; Restore StoLoop Counter ret OwnComVec ENDP WorkMCBs PROC mov ah,52h ; Use reserved DOS int 21h ; Interrupt to get mov bx,es:[bx-2] ; Start MCB Address xor cx,cx ; Zero Array Counter MCBLoop: mov es,bx ; Locate MCB Segment mov bx,es:[3] ; Input length to next mov dx,es:[1] ; from PSP Address or dx,dx ; If NO PSP Address jz CkBlock ; then check MCB ID inc cx ; else advance counter mov ax,6 ; calculate mul cl ; and set mov bp,ax ; MCB index mov MCBS[bp].pspa,dx ; Store PSP Address mov MCBS[bp].mcba,es ; MCB Address and mov MCBS[bp].mcbl,bx ; Length to Next MCB CkBlock: cmp BYTE PTR es:[0],"Z" ; If Last MCB je LastMCB ; then MCBs done cmp BYTE PTR es:[0],"M" ; else if Next MCB je NextMCB ; then process MCB mov es,sbuffer ; else Restore Buffer stc ; Segment and Exit jmp ExitMCB ; with CY flag set NextMCB: mov dx,es ; If MCB address add bx,dx ; plus length to inc bx ; next from PSP is before cmp bx,spsp ; segment of current PSP jc MCBLoop ; then loop until there LastMCB: mov es,sbuffer ; else Restore Buffer Segment xor bx,bx ; Initialize MCB Index Pointer call SortMCBs ; Sort by PSP and space buffer StoLoop: add bx,6 ; Advance MCB Index mov startl,di ; UpDate Start of Line inc di ; Start with a space mov ax,MCBS[bx].pspa ; Get PSP Address Word push ax ; Preserve LSB while mov al,ah ; isolate MSB and call Val2ASCh ; store 1st MSB and stosb ; 2nd HEX ASCII digits pop ax ; Restore LSB and push ax ; Preserve for decision call Val2ASCh ; Store 1st LSB and stosb ; 2nd HEX ASCII digits inc di ; plus a space mov ax,MCBS[bx].mcba ; Get MCB Address Word push ax ; Preserve LSB while mov al,ah ; isolate MSB and call Val2ASCh ; store 1st MSB and stosb ; 2nd HEX ASCII digits pop ax ; Restore LSB and call Val2ASCh ; store 1st LSB and stosb ; 2nd HEX ASCII digits pop ax ; If PSP cmp ax,MCBS.pspa ; Was Last jnc WasLast ; then End push cx ; else Preserve StoLoop push bx ; counter and MCBS Index mov bx,MCBS[bx].mcba ; If the MCB inc bx ; plus one cmp ax,bx ; equals PSP jz FCounts ; then count add di,4 ; else advance pointer jmp SHORT NoFileX FCounts: mov bp,di ; Preserve MapData Pointer mov es,ax ; Point to Segment and mov di,18h ; Offset of DOS Files mov cx,20 ; Initialize Counter mov al,0FFh ; Looking for closed repne scasb ; Preserve position mov ax,di ; after search mov es,sbuffer ; Restore Data Buffer mov di,bp ; Segment and Pointer sub ax,19h ; Calculate open files xor dx,dx ; as a double word mov bx,4 ; Set number of places push ax ; Arg 1 - LSW push dx ; Arg 2 - MSW push di ; Arg 3 - dest push bx ; Arg 4 - places call BinToDStr ; Store number of files NoFileX: pop bx ; Restore Index and pop cx ; StoLoop Counter inc di ; Advance to end of files mov ax,MCBS[bx].mcbl ; Store length as jmp SHORT P2Bytes ; decimal bytes WasLast: neg ax ; Calculate add ax,tmem ; free memory mov si,OFFSET freem+1 ; Store " free" mov cx,5 ; memory bytes rep movsb ; Counter now 0 P2Bytes: push cx ; Preserve Counter push bx ; and MCB Index xor dx,dx ; Clear top and mov bx,10h ; multiply into mul bx ; double word bytes mov bx,7 ; Set for 7 place push ax ; integerLSW and push dx ; integerMSW to push di ; store into push bx ; the data call BinToDStr pop bx ; Restore Index and pop cx ; If Counter is zero jcxz WorkEnd ; then work is done call OwnComVec ; else finish line jmp StoLoop ; Until Last PSP WorkEnd: mov ax,0A0Dh ; End the stosw ; Last Line ExitMCB: ret WorkMCBs ENDP DoIMdata PROC push ds ; Preserve Data Segment push ax ; and Pointer to DOS Data mov si,ax ; Initialize Source Index mov cx,8 ; Pointer and Counter mov ax,40h ; Set DOS data segment in mov ds,ax ; Data Segment Register cmp si,0A8h ; If EGA Info Area jz IMAOk ; then bytes IS 8 add cx,8 ; else bytes is 16 IMAOk: push cx ; Preserve byte counter IMdigL: inc di ; Space before lodsb ; data byte's call Val2ASCh ; first and stosb ; 2nd HEX ASCII digits loop IMdigL ; until count complete pop cx ; Restore byte counter pop si ; and DOS data pointer add di,2 ; Add 2 spaces cmp si,0A8h ; If NOT 8 byte EGA jnz IMascL ; then ready for ASCII add di,8 ; else need 8 spaces IMascL: lodsb ; Get a byte cmp al,20h ; If => space jnc CkHigh ; then check delete UseDot: mov al,"." ; else use a dot CkHigh: cmp al,7Fh ; If => delete jnc UseDot ; then use a dot stosb ; Send to MapData loop IMascL ; until CX 'em pop ds ; Restore Data Segment mov ax,0A0Dh ; End the line stosw ret DoIMdata ENDP InfoMap PROC call Underline ; Underline block data mov si,OFFSET EgaHdg ; Transfer EGA Info mov cx,EgaLen ; Area Heading rep movsb mov ax,0A8h ; Point to and call DoIMdata ; transfer EGA data mov si,OFFSET IcaHdg ; Transfer Inter- mov cx,IcaLen ; Application Area rep movsb ; Heading bytes mov ax,0F0h ; Point to and call DoIMdata ; get ICA data Underline: mov ax,"- " stosb ; Space plus mov al,ah ; Minus sign mov cx,76 ; Underlines rep stosb mov ax,0A0Dh ; End the stosw ; underline ret InfoMap ENDP EmmsMap PROC mov ax,3567h ; Get Vector for int 21h ; Function 67hex push di ; Preserve store pointer mov di,000Ah ; If Device mov cx,8 ; Name is NOT rep cmpsb ; "EMMXXXX0" mov es,sbuffer ; after restore pop di ; storage ES:DI jne EmsErrX ; then Error Exit mov ah,46h ; or if version int 67h ; number request or ah,ah ; returns error jnz EmsErrX ; then Error Exit mov si,OFFSET emmshdg ; else store 1st mov cx,emmlen1 ; heading line rep movsb ; with Version call Val2ASCh ; Major Number mov ah,"." ; plus dot and xchg al,ah ; Minor Number stosw mov cx,emmlen2 ; Add 2nd heading rep movsb ; line lead-in to mov ah,41h ; EMS Page Frame int 67h ; If Page Frame or ah,ah ; Request Fails jnz EmsErrX ; then Error Exit mov al,bh ; else store HEX call Val2ASCh ; digits one and stosb ; two and follow mov al,bl ; with the third call Val2ASCh ; and fourth plus mov ah,")" ; ending parenthesis stosw mov ax,0A0Dh ; End the line stosw mov ah,4Bh ; Get Handle int 67h ; Count in BX or ah,ah ; If Response jz EmPages ; then Map Pages EmsErrX: mov si,OFFSET emserm ; else store mov cx,emerml ; E M S rep movsb ; Error jmp SHORT EmmExit ; Message EmPages: mov cx,bx ; Set Handle Counter inc cx ; for zero thru [bx] xor dx,dx ; Count up from 0 HndLoop: mov ah,4Ch ; Get Assigned int 67h ; Handle Pages or ah,ah ; If Error jnz NoPages ; then skip or bx,bx ; else if > 0 jnz PagesOk ; then store NoPages: inc dx ; else loop until loop HndLoop ; CX handles done jmp SHORT HndExit PagesOk: push dx ; Preserve Handle push cx ; Handle Counter push bx ; and Handle Pages mov cx,6 ; Set places xor ax,ax ; and MSW push dx ; Arg 1 - LSW push ax ; Arg 2 - MSW push di ; Arg 3 - destination push cx ; Arg 4 - places call BinToDStr ; Store Handle Number pop ax ; Restore Pages and add tpages,ax ; accumulate total call PgsAndKbs ; Store Pages and KiloBytes pop cx ; Restore Counter pop dx ; and EMS Handle add di,3 ; else Advance to mov ax,5300h ; UserName Start to be int 67h ; Stored If Available add di,8 ; Advance Past Area HndlEnd: mov ax,0A0Dh ; End the line stosw inc dx ; Increment Handle loop HndLoop ; until CX'em done HndExit: mov ah,42h ; Get Free int 67h ; Pages mov dx,tpages ; Calculate add dx,bx ; Total Pages mov si,OFFSET freem ; Store mov cx,6 ; " free" rep movsb ; lead-in push dx ; Preserve Total mov ax,bx ; Store Free as call PgsAndKbs ; Pages and KiloBytes mov si,OFFSET dashes+24 ; Space Over mov cx,11 ; and dash-out rep movsb ; UserName mov ax,0A0Dh ; End the line stosw mov si,OFFSET totlm ; Store mov cx,6 ; " total" rep movsb ; lead-in pop ax ; Store Total as call PgsAndKbs ; Pages and KiloBytes mov si,OFFSET dashes+24 ; Space Over mov cx,11 ; and dash-out rep movsb ; UserName EmmExit: mov ax,0A0Dh ; End the line stosw ret EmmsMap ENDP Vectors PROC mov si,OFFSET WatchS ; else if last push di ; command line sub di,19 ; parameter was mov cx,11 ; "TSR WATCHER" rep cmpsb ; then WATCH is pop di ; installed jnz CkWatch ; else check flag mov WatchF,ax ; Set Watch PSP as Flag CkWatch: cmp WatchF,0 ; If NO TSR WATCHER Installed jz UseHook ; then Hooked else Chained Vectors push ds ; Preserve Data Segment mov ds,WatchF ; while Point to Watch mov dx,ax ; Copy Program PSP mov si,104h ; Get Next Vector lodsw ; Position in mov si,220h ; Vector Change add ax,si ; Storage Area mov vpos,ax ; Store for Comparison mov ax,dx ; Restore PSP and Zero xor bp,bp ; Vector/Line Counter FFLoop: cmp si,vpos ; If at Table End jz WatchX ; then exit done lodsw ; else if Word cmp ax,-1 ; is NOT pspid jne FFLoop ; then keep looking lodsw ; or if Program PSP cmp ax,dx ; is NOT in next word jne FFLoop ; then keep looking add si,4 ; else Point to Vectors WatchL: lodsw ; If Next pspid cmp ax,-1 ; is found jz WatchX ; then exit done cmp ah,0 ; else if Case ID = 0 jz WatchO ; then check columns Ok cmp bp,0 ; else if Vectors Written jnz WatchX ; then exit done pop ds ; else Restore DS mov si,OFFSET disam ; and store "*** mov cx,disalen ; D I S A B L E D rep movsb ; ***" and exit jmp SHORT INTExit WatchO: cmp bp,9 ; If NOT to last column jc WatchW ; then store Vector mov WORD PTR es:[di],0A0Dh add di,53 ; else start new line xor bp,bp ; and update counter WatchW: call Val2ASCh ; Store 2 HEX ASCII mov ah," " ; digits plus a space stosw inc bp ; Count Vector add si,6 ; Advance to next jmp SHORT WatchL ; vector until exit WatchX: pop ds ; Restore Data Segment jmp SHORT INTExit UseHook: mov bp,di ; else copy Pointer xor di,di ; Point ES:DI to mov es,di ; DOS INT Vectors mov cx,512 ; Set Word Count mov dx,4 ; and INT Divisor INTLoop: mov ax,MCBS[bx].pspa ; Scan for PSP in repne scasw ; DOS Vector Table mov es,sbuffer ; Restore ES:DI to Buffer xchg bp,di ; If at End of Vector Table jcxz INTExit ; then Vectors are Done mov ax,bp ; else Calculate div dl ; Vector Number dec ax ; Zero - Based call Val2ASCh ; Display 2 HEX ASCII mov ah," " ; digits plus a space stosw xor ax,ax ; Reset Extra Segment mov es,ax ; and Pointer to Vectors xchg bp,di ; preserving MapData Pointer mov ax,startl ; If start of current row add ax,columns-3 ; to position after end cmp bp,ax ; is greater than pointer jc INTLoop ; then loop until end/done mov WORD PTR es:[bp],0A0Dh add bp,2 ; else start new line mov startl,bp ; mark start of line add bp,51 ; Advance to Vector Area jmp SHORT INTLoop ; Loop Until Vectors Done INTExit: ret Vectors ENDP END Main