Reverse engineered and C ported MT15.DRV (MT32-Sound-Driver) of Stunts 1.0 and 1.1 in one source The Sound driver is not a dos typical com or exe file, its starts at offset 0 with an jump table to the driver functions and gets loaded into its own segment by the game
- Assembler source can be rebuild to 100% binary exact version of the original
- Assembler can be partially mixed with C ported functions or all functions can be replaced by C code
Stunts 1.0 MT15.DRV seems to sound better than the 1.1 version (some strange slowdowns happen) i want to understand what the differences are and how to port that stuff to C
Result: the timing code is different - but only some lines of assembler nothing big
| File | Info |
|---|---|
| \org | original driver versions - the pure assembler source builds gets validated agains these files (100% binary exact result) |
| build.cmd | main buid batch |
| build_helper.cmd | to keep the build options under control (original asm, asm with partial C, mostly C, ...) tools_dir variable in build_helper.cmd needs to be set to suits your environment |
| clang_test.cmd | using clang/clang-tidy for building (just to find silly bugs in the C port) |
| drv.c | the ported C code |
| MT15.asm | reversed assembler code with version 1.0/1.1, jumper for C ported functions |
| tools_howto.txt | how to get the needed build tools (UASM, ulink, OpenWatcom) very easy to install |
tools_dir variable in build_helper.cmd needs to be set to suits your environment
build.cmd will create a .._build folder (out of source build) with subfolder 10 and 11 for the different versions
merge MT15.drv versions of other Distinctive Software, Inc. games
| Game | Date | Size | MD5 | Info |
|---|---|---|---|---|
| Stunts 1.0 | 11.10.1990 | 1667 | 7048D28F2A0FE8C8C09141D5C89706DB | UnifiedMT15 |
| 4D Sports Boxing 1.0 | 05.10.1990 | 1667 | 7048D28F2A0FE8C8C09141D5C89706DB | |
| Bill Elliotts Nascar Challenge | ~1991 | 1667 | 7048D28F2A0FE8C8C09141D5C89706DB | |
| Stunts 1.1 | ~1991 | 1750 | ACC5D03D038F1EF0AFA0CF4DCAD72EF9 | UnifiedMT15 |
| 4D Sports Boxing 1.1 | 22.04.1991 | 1788 | B17BBC19ED37C9413DD68E20D4D9848F | |
| Mission Impossible | 22.04.1991 | 1788 | B17BBC19ED37C9413DD68E20D4D9848F | |
| World Tour Tennis | ~1993 | 1789 | 53F6BCAEBC097893868C69CE994A3321 | |
| 4D Sports Tennis | 03.03.1992 | 1789 | 53F6BCAEBC097893868C69CE994A3321 | |
| Michael Jordan in Flight | 21.12.1992 | 1813 | 372ED87FEE4FB0762D2531DC8BB34337 | |
| The Simpsons: Barts House of Weirdness | ~1991 | 1982 | 8326A348DCC756EEB77466AD53F742EA | |
| Top Gun Danger Zone | ? | ? | ? | |
| NFL | ? | ? | ? |
and more