; ; Command Line History Input TSR ; ; 1991.07.12 make by Ken ; .286 _TEXT SEGMENT WORD PUBLIC 'CODE' _TEXT ENDS _DATA SEGMENT WORD PUBLIC 'DATA' _DATA ENDS CONST SEGMENT WORD PUBLIC 'CONST' CONST ENDS _BSS SEGMENT WORD PUBLIC 'BSS' _BSS ENDS DGROUP GROUP _TEXT, CONST, _BSS, _DATA ASSUME CS: DGROUP, DS: DGROUP, SS: DGROUP extrn _input:near extrn _dta_bak:dword extrn _dta:near _DATA segment UnGetBuf db 0FFh _DATA ends _TEXT segment Vect_21 dd far public _PUTC _PUTC proc near push bp mov bp,sp mov dl,[bp+4] mov ah,02h int 21h pop bp ret _PUTC endp public _PUTS _PUTS proc near push bp mov bp,sp push bx push dx mov ah,02h mov bx,[bp+4] mov cx,[bp+6] cmp cx,0 jle _PUTS_5 _PUTS_1: mov dl,[bx] inc bx cmp dl,0 je _PUTS_5 cmp dl,0Ah jne _PUTS_2 mov dl,0Dh jmp _PUTS_3 _PUTS_2: cmp dl,20h jnb _PUTS_3 mov dl,'.' _PUTS_3: int 21h loop _PUTS_1 _PUTS_5: pop dx pop bx pop bp ret _PUTS endp public _BEEP _BEEP proc near push dx mov ah,02h mov dl,07h int 21h pop dx ret _BEEP endp public _FLUSH _FLUSH proc near ret _FLUSH endp public _BAKSPC _BAKSPC proc near push bp mov bp,sp push dx mov cx,[bp+4] cmp cx,0 jle _BAKSPC_2 mov ah,02h mov dl,08h _BAKSPC_1: int 21h loop _BAKSPC_1 _BAKSPC_2: pop dx pop bp ret _BAKSPC endp public _REPCHR _REPCHR proc near push bp mov bp,sp push dx mov cx,[bp+6] cmp cx,0 jle _REPCHR_2 mov ah,02h mov dl,[bp+4] _REPCHR_1: int 21h loop _REPCHR_1 _REPCHR_2: pop dx pop bp ret _REPCHR endp public _GETCH _GETCH proc near mov al,UnGetBuf cmp al,0FFh jne GetCh_1 ; UnGetBuf TRUE ? mov ah,08h ; Non Echo Get Char int 21h GetCh_1: mov UnGetBuf,0FFh sub ah,ah ret _GETCH endp public _UNGETCH _UNGETCH proc near push bp mov bp,sp mov al,[bp+4] mov UnGetBuf,al pop bp ret _UNGETCH endp public _tolow _tolow proc near push bp mov bp,sp mov ax,[bp+4] sub ah,ah cmp al,'A' jb _tolow_1 cmp al,'Z' ja _tolow_1 or al,20h _tolow_1: pop bp ret _tolow endp public _strlow _strlow proc near push bp mov bp,sp push bx mov bx,[bp+4] _strlow_1: mov al,[bx] cmp al,0 je _strlow_3 cmp al,'A' jb _strlow_2 cmp al,'Z' ja _strlow_2 or al,20h _strlow_2: mov [bx],al inc bx jmp _strlow_1 _strlow_3: pop bx pop bp ret _strlow endp public _DTA_init _DTA_init proc near push es push bx mov ah,2Fh int 21h mov word ptr [_dta_bak],bx mov word ptr [_dta_bak+2],es mov ah,1Ah mov dx,offset DGROUP:_dta int 21h pop bx pop es ret _DTA_init endp public _DTA_end _DTA_end proc near push ds mov ah,1Ah mov dx,word ptr [_dta_bak] mov ax,word ptr [_dta_bak+2] mov ds,ax int 21h pop ds ret _DTA_end endp public _farst_call _farst_call proc near push bp mov bp,sp mov ah,4Eh mov cx,21h mov dx,[bp+4] int 21h mov ax,1 jnc _farst_1 sub ax,ax _farst_1: pop bp ret _farst_call endp public _next_call _next_call proc near mov ah,4Fh int 21h mov ax,1 jnc _next_1 sub ax,ax _next_1: ret _next_call endp ;******************************************************************* His_Go proc near pusha push ds push es sti push ds push dx mov bx,dx mov al,ds:[bx] sub ah,ah push cs pop ds push ax call _input add sp,2 mov si,ax pop di pop es mov bx,di add di,2 sub ah,ah His_Go_1: lodsb or al,al je His_Go_3 cmp al,0Ah jne His_Go_2 mov al,0Dh stosb jmp His_Go_3 His_Go_2: cmp ah,es:[bx] jnb His_Go_3 stosb inc ah jmp short His_Go_1 His_Go_3: mov es:[bx+1],ah pop es pop ds popa iret His_Go endp Trap_21 proc near cmp ah,0Ah ; Dos Line Input Call je His_Go jmp cs:[Vect_21] Trap_21 endp ;******************************************************************* public His_init His_init proc near push ds mov ax,3521h ; Get 21h Int Vect int 21h mov word ptr cs:[Vect_21],bx mov ax,es mov word ptr cs:[Vect_21+2],ax push cs pop ds mov dx,offset DGROUP:Trap_21 mov ax,2521h ; Set Now Vect int 21h pop ds ret His_init endp public His_end His_end proc near push ds lds dx,cs:[Vect_21] mov ax,2521h ; Set 21h int Vect int 21h pop ds ret His_end endp _TEXT ends end