2010-02-22 18:06:21 +00:00
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; ScummVM - Graphic Adventure Engine
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;
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; ScummVM is the legal property of its developers, whose names
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; are too numerous to list here. Please refer to the COPYRIGHT
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; file distributed with this source distribution.
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;
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; This program is free software; you can redistribute it and/or
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; modify it under the terms of the GNU General Public License
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; as published by the Free Software Foundation; either version 2
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; of the License, or (at your option) any later version.
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2016-09-03 10:46:38 +00:00
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;
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2010-02-22 18:06:21 +00:00
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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2016-09-03 10:46:38 +00:00
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;
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2010-02-22 18:06:21 +00:00
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; You should have received a copy of the GNU General Public License
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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;
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;---------------------------------------------------------------------------
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;
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; SCITRACE
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; TSR for logging specific calls inside sierra sci
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; Written by M. Kiewitz
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;
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;---------------------------------------------------------------------------
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; Simply replace 51h 51h 51h 51h in sierra sci with
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; CDh 90h 90h 90h. This code will then log copyrect calls to scitrace.bin
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.286
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code_seg segment public
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assume cs:code_seg, ds:nothing, es:nothing
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org 00100h
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scitrace: jmp install_my_prog
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;---------------------------------------------------------------------------
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filename: db 'SCITRACE.BIN', 0
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inthandler: push ax
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push bx
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push cx
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push dx
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push ds
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push cs
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pop ds
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mov ah, 3Dh
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mov al, 1
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mov dx, offset filename
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xor cl, cl
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int 21h
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pop ds
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jc int_error
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mov bx, ax
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mov ax, 4202h
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xor cx, cx
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xor dx, dx
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int 21h
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mov dx, si
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mov ah, 40h
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mov cx, 8
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int 21h
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mov ah, 3Eh
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int 21h
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int_error: pop dx
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pop cx
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pop bx
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pop ax
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movsw
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movsw
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movsw
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movsw
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iret
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end_of_tsr:
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;---------------------------------------------------------------------------
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titlestr: db 'SCITRACE - written by M. Kiewitz',13,10,'$'
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errorfile: db 'error creating file',13,10,'$'
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;---------------------------------------------------------------------------
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install_my_prog:
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push cs
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pop ds
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mov ah, 09h
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mov dx, offset titlestr
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int 21h
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mov ah, 3Ch
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mov cx, 0
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mov dx, offset filename
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int 21h
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jnc valid_open
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mov ah, 09h
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mov dx, offset errorfile
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int 21h
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mov ax, 6200h
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int 21h
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mov es, bx
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mov ax, 4C00h
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int 21h
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valid_open: mov bx, ax
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mov ah, 3Eh
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int 21h
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2010-10-12 02:18:11 +00:00
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NowInstallTSR:
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2010-02-22 18:06:21 +00:00
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mov ax, 2590h
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mov dx, offset inthandler
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int 21h ; int 90h pointer <- ds:dx
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mov ax, ds:[002ch] ; get envt segment
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mov es, ax
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mov ax, 4900h
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int 21h
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mov dx, offset end_of_tsr
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add dx, 15
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shr dx, 4
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mov ax, 3100h
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int 21h
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;---------------------------------------------------------------------------
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code_seg ends
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end scitrace
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