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Old 20 February 2021, 23:05   #1
Akiko
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Wing Commander CD32 Specal edition

I fancy completing Wing Commander again, but it seems a bit sluggish on a stock CD32, and graphics corrupt when playing it accelerated with TF330.


Does anyone know where I can find the CD32 Special edition of this, or any version that works well with an accelerated CD32?


Cheers.

Last edited by Akiko; 20 February 2021 at 23:15.
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Old 22 February 2021, 11:49   #2
DamienD
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I think you should run the WHDLoad version then, as you have many "Game Speed" options: http://whdload.de/games/WingCommander.html
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Old 24 February 2021, 09:57   #3
wairnair
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Quote:
Originally Posted by Akiko View Post
I fancy completing Wing Commander again, but it seems a bit sluggish on a stock CD32, and graphics corrupt when playing it accelerated with TF330.


Does anyone know where I can find the CD32 Special edition of this, or any version that works well with an accelerated CD32?


Cheers.
Hi there,

I've put the version I have in the zone. Its a simple HD install (not whdload) and can be started by running "startup-sequence" in its main dir.
Works perfectly on my TF330.

(sidenote: akiko is not worth enabling on the TF330, it's only helpful on the 020.The 030@50mhz will make the game fly)
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Old 26 February 2021, 01:26   #4
AmigaHope
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Quote:
Originally Posted by wairnair View Post
(sidenote: akiko is not worth enabling on the TF330, it's only helpful on the 020.The 030@50mhz will make the game fly)
Interestingly, from tests that have been done, it seems that Akiko still helps slightly on an 030/50, but that's only with extremely optimized code that runs out of fast RAM that only touches the slow Akiko registers for one write and read.


Wing Commander CD32 is not coded this way, of course, so the patched C2P routines are a win anyway on anything but a stock CD32 instead of using the stock Akiko routine in the game.
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Old 27 February 2021, 08:32   #5
emiespo
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Quote:
Originally Posted by Akiko View Post
I fancy completing Wing Commander again, but it seems a bit sluggish on a stock CD32, and graphics corrupt when playing it accelerated with TF330.


Does anyone know where I can find the CD32 Special edition of this, or any version that works well with an accelerated CD32?


Cheers.

As others have said, with the screen size and code of Wing Commander, the pure CPU version of the C2P routines is much faster than Akiko.

If you fancy trying it anyway - it’s still definitely playable - you should install the MMU.library and it’s 68030.library. It will mark Akiko’s address as non cacheable.

...unfortunately Akiko was never meant to be working on any cpu above a 020. On a 68030 the data cache will mess with Akiko’s detection routines in the OS. Wing commander does not use the os, but you still need to make sure that the data-cache is off when reading/writing to it (this is basically due to the silly nature of the chip: you write 8 times to the same location and read back 8 times from it. Guess what a data-cache would do... ;-)).

If you fancy using Akiko for os-friendly stuff, I made a hacky patch that will force the OS to use Akiko again: https://aminet.net/package/util/misc/AkikoTFFix. You’ll still need either the mmu.library OR to disable the data-cache (killing performance).

I found that Akiko still helps a bit on a 68030 with ADoom. Slightly faster than the blitter-assisted C2P.


Sent from my iPhone using Tapatalk
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Old 28 February 2021, 12:42   #6
wairnair
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For completeness, this was the page of the thread particularly about DOOM vs Akiko.
(a very, very slight advantage to Akiko)
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Old 04 March 2021, 03:48   #7
Akiko
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I look forward to playing it this weekend, thank you for uploading.
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