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Old 10 March 2016, 21:26   #430
dlfrsilver
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Quote:
Originally Posted by roondar View Post
Ohhhh, really.. Does it now...
Well, this game happens to have both C64 and Amstrad tape loading sequences on Youtube. In full, no edits.
it's better to have the real hardware handy, and it happens i have both.

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Let's see, the C64 as seen [ Show youtube player ], loads the game and level data in 5 minutes and 45 seconds start to finish.
That's more or less the same amount of time needed for batman the movie on c64.

EDIT : are you fucking kidding me ? The guy is using a cart to accelerate the whole process !!! That's once again a lot of biased bullshit, i'm doing my tests with the basic hardware !!!!!

Quote:
The Amstrad CPC on the other hand, seen [ Show youtube player ], takes a full 9 minutes and 18 seconds to load. Taking roughly two times as long to load... Which means your claims of side-by-side loading are quite obviously false.
Of course it takes 9 mn 18 seconds, you've picked the 128kb tape version, which is loading the whole game in memory + the digital voices !!

The 64k version on tape is not loading in such an amount of time, it loads in 6 mn.

Next when i load Robocop on my C64, i give it 20 secondes for free, and even with this, my 464 finished to load the main code + data block 1 before the c64 version.

I verified it yesterday evening !

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But wait, thats not all!
Well i think that's it !

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Thanks to the video, we can do better - we can compare speed of loading by looking at the time the loading screens take to load. Because these are of a known size, we can figure out just how many bytes are loaded in what timeframe.

First up, the C64: it starts loading the picture at 2:11 and takes until 2:33 to finish, for a total of 22 seconds. The picture is a standard multicolour bitmap, which takes up 9.000 bytes of RAM, so it is loading at about 409 bytes per second.
It wrong here. On my C64 and datasette connected, the title screen is certainly not taking 22 seconds to load, it takes far more time to load !

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Next, the Amstrad: it starts loading the picture at 0:45 and takes until 1:55 to finish, for a total of 70 seconds. The picture is 4 colour, 320x200, which takes up 16.000 bytes of RAM*, so it is loading at about 229 bytes per second.
Once again i don't know where you picked your numbers, but the robocop CPC title screen takes way more than 70 seconds to load.

The only right numbers are the screen size, colors, and screen resolution.

I'm not surprised how wrong the c64 users are if they actually refer to the youtube videos.

I have the WAV files for both computers, CPC and C64 and the result on original hardware is completely different.

Quote:
In other words, not only is the C64 done loading much quicker overall, it also can be seen to objectively load in data at nearly twice the speed of the Amstrad by looking at the time it takes to load in the loading pictures.

*) 320x200x2 BPP/8 = 16.000 bytes
You're basing yourself on emulated software, i'm testing on the real machines, and my c64 is fully revised (computer + datasette).

And you finally didn't answered me about my question :

Why is the game loading faster on CPC (real hardware), than on the c64 version, when this one is encoded at 3000 bauds when the CPC version is only encoded at 1700 bauds for the main code and 2000 bauds for the data blocks ?

Please go on, tell now (instead of using inaccurate emulators videos).

Last edited by dlfrsilver; 10 March 2016 at 21:45.
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