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Emulator Issues #776

closed

dcb* instructions unimplemented

Added by Autoran1 over 15 years ago.

Status:
Won't fix
Priority:
Normal
Assignee:
-
% Done:

0%

Operating system:
N/A
Issue type:
Bug
Milestone:
Regression:
No
Relates to usability:
No
Relates to performance:
No
Easy:
No
Relates to maintainability:
No
Regression start:
Fixed in:

Description

What steps will reproduce the problem?

  1. Run the Crash Mind Over Mutant on any revision of Dolphin
    2.
    3.

Right after stating game there will be the warning message "dcbtst -
istruction unimplemented!" Interpreter mode doesn't help either
after clicking OK several hundred times The WiiRemote start screen will
appear like in any Wii game


Related issues 2 (0 open2 closed)

Has duplicate Emulator - Emulator Issues #2567: Rubik's: Rush (U) (WZIETW)-JIT compile errorDuplicate

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Has duplicate Emulator - Emulator Issues #3409: Crash Bandicoot Mind over Mutant CrashesDuplicate

Actions
Actions #1

Updated by shadow0000 over 15 years ago

Crash Tag Team Racing for the GC also gives the same warning message, it crashes
after selecting OK a few times, I haven't tested Nitro Kart and Wrath of Cortex.

Actions #2

Updated by Anonymous over 15 years ago

  • Status changed from New to Accepted

Confirmed that this game makes extensive use of the Data Block Cache instructions (I
tested Crash Tag Team Racing for GC). Unfortunately, I'm not sure if we can feasibly
implement them...I was told that it will result in ridiculous amounts of slowdown.

Actions #3

Updated by Anonymous over 15 years ago

Data Cache Block*

Actions #4

Updated by PianoGamer over 15 years ago

The Incredible Hulk: Ultimate Destruction also has this error :(

Actions #5

Updated by lolzorz.funny over 15 years ago

dcbt and dcbtst are both simply prefetch instructions : they should not be emulated.
Dolphin shouldn't give errors upon their execution.

Actions #6

Updated by Anonymous over 15 years ago

  • Status changed from Invalid to Won't fix

lolzorz is right :)

Actions #7

Updated by jayork42 about 15 years ago

So I suppose this is why CTTR always slows down to some degree. Isn't there some way
to emulate these instructions without the slowdowns? Because apparently there are
several game that use these instructions and they'll be otherwise left out of
Dolphin's playable game library.

Actions #8

Updated by kajin41 over 14 years ago

well there is a way but you would need to convert the game to a windows application
and as far as i know there isnt anything that does that

Actions #9

Updated by skidau about 14 years ago

Issue 3409 has been merged into this issue.

Actions #10

Updated by skidau about 14 years ago

Issue 2567 has been merged into this issue.

Actions #11

Updated by jayork42 almost 13 years ago

CTTR works now, and at a great speed too.

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