Dreamcast 60fps codes

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by asasega on Nov 15, 2017:

tested with the three tosec versions from this thread
https://assemblergames.com/threads/req-dreamcast-archive.53514/
code needs conditionals because the two addresses we modify are modified by the game during fmv and loadings
first part modifies the instruction responsible for the fps limit to 30
second part modifies the speed value responsible for physics and timers etc

for japanese version
0D01BF2A
00007002 //check if correct instruction
0101BF2A
00007001 //modify fps instruction

0D3BC90E
000041F0 //check correct value
023BC90C
42700000 //modify speed value

for pal and us version
0D01BF2A
00007002
0101BF2A
00007001

0D3BBBEE
000041F0
023BBBEC
42700000

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by WarRen22 on Nov 15, 2017:

there is any way to put this mods on a iso?

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by 8bitplus on Nov 16, 2017:

I'd also love to see a bootable permanent 60fps version of this game

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by fafadou on Nov 16, 2017:

Yeah it will be very nice to build an iso with this framerate.
But the vga is at 60hz already, isn't it ?

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by yzb37859365 on Nov 16, 2017:

for japanese version
0D01BF2A
00007002 //check if correct instruction
0101BF2A
00007001 //modify fps instruction

0D3BC90E
000041F0 //check correct value
023BC90C
42700000 //modify speed value

The 2 modified addresses should be in the file LEMANS24.BIN

Address 0xbf2a (02 changed to 01)

Address 0xfd520 (00 00 F0 40 changed to 00 00 70 42)

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by 8bitplus on Nov 17, 2017:

Thanks, I'll build and test over the weekend

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by fafadou on Nov 17, 2017:

An iso with 60 fps and a widescreen hack ? :

0229B90C
3F400000

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by 8bitplus on Nov 17, 2017:

I was just going to do the 60fps if possible. I don't play Dreamcast on a widescreen TV.
I keep it real with a 4:3 CRT

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by 8bitplus on Nov 17, 2017:

yzb37859365 said:

The 2 modified addresses should be in the file LEMANS24.BIN

Address 0xbf2a (02 changed to 01)

Address 0xfd520 (00 00 F0 40 changed to 00 00 70 42)

Are all the values changed in that bin? or the track bins for the GDI?
HxD sill good to use?
Its been a long time since I last did hex editing.

Archive · Post by **Archive** » June 27th, 2019, 10:06 am

posted by asasega on Nov 17, 2017:

Tony Hawk's Pro Skater T40205N V1.000

60fps
01103DC8
00000009

43BC2C48 offset track5.bin

Tony Hawk's Pro Skater 2 T13006N V1.001

60fps
010CC248
00000009

3979D388 offset track5.bin

regarding Le mans 24, yzb37859365 gave the correct offsets
for japanese version HDR-0149 V1.000
52B59EA offset track5.bin for fps
53CAD70 offset track5.bin for speed value