Metro Siege: new arcade quality a500 brawler!

[Keir]

How does the game map onto other systems? Do you have a Mac "kernel" which emulates Amiga sprites and copper to some degree of detail with a cpu renderer, for example? Or is the API somehow higher level than that?

[Cobe]

Originally Posted by Amigajay

That explains why it worked for you (using adfs) and not for me using the iso.

Using the pre-made ISO gave me a red CDTV screen which means its not recognised as a compatible disc. (I.e they may have used a CD32.tm file)

Using the ISO i made, it at least cleared the trademark screen, but was left with black screen after that and no more loading.

I juggled a bit more. If you remove system-configuration from devs you can see whats beneath black screen. Its dos error 212. Sys <2.0 needs CD command to change dir. Added. After that dos error 103. Insufficienct free storage. Added 2mb chip + 8mb fast to cdtv and... Wait for disk activity to finish retry/cancel...

[Don_Adan]

For test better change system-configuration to normal (blue).
And copy and call Avail from startup-sequence.
You will be see how many free chip RAM is available after boot.
Later compare with disk version running on CDTV.
If this game used full of memory, then maybe CDTV.TM consume some memory.

[Cobe]

Originally Posted by Don_Adan

For test better change system-configuration to normal (blue).
And copy and call Avail from startup-sequence.
You will be see how many free chip RAM is available after boot.
Later compare with disk version running on CDTV.
If this game used full of memory, then maybe CDTV.TM consume some memory.

that would make sens if the game worked with additional ram.
And you cant compare trackloading and dos versions.

However tested on A600HD and the results are the same as on cdtv.
Dos version starts working only if I add 020. And needs 1.5 megs.

[Don_Adan]

Ok, then 68020 command is used or odd address error occured, I dont know guru number.
For extra memory, maybe something like add 21k/44k can works.

[Cobe]

Originally Posted by Don_Adan

Ok, then 68020 command is used or odd address error occured, I dont know guru number.
For extra memory, maybe something like add 21k/44k can works.

Oh you're probably right
Error: 8000 0003

[Don_Adan]

Odd address error.
To be sure, if only, you can disable in WinUAE "More compabilities" option, if I remember right.
This option ignores (too) odd addres errors for 68000 CPU.

[Cobe]

I narrowed it down.
exe from cd32 iso is obviously compiled for 020
exe from lha works on 000 but still needs 1.5 megs

maybe addXXks could help...

[alpine9000]

Originally Posted by Keir

How does the game map onto other systems? Do you have a Mac "kernel" which emulates Amiga sprites and copper to some degree of detail with a cpu renderer, for example? Or is the API somehow higher level than that?

It uses a combination of emulating Amiga hardware and conditional compilation. In the case of copper and sprites it does partially emulate hardware so the same copperlist can be used on Amiga and modern versions. For other things which don’t have many different implementations (for example rendering an image), conditional compilation will use the blitter on Amiga yet call a host image copy function on the non Amiga version.