Print Page - Load audio samples to emulator memory

Title: Load audio samples to emulator memory
Post by: lightforce6128 on 03:44, 21 January 25

I'm not sure if this is the right category. My topic is about emulators, sampled audio, and programming.

Lately I did some experiments with sampled audio. For this I used WinAPE (2.0 Beta 2), configured with a memory extension of 4 megabyte and a DigiBlaster. I prepared the audio data with an external C++ program and stored it into an empty snapshot file (uncompressed for easy write access to the file). This works fine and the audio quality is also good.

For the current experiment I only used 512 kilobytes of the memory extension. This is well mapped to the snapshot file. To extend the sample time I would like to use the full 4 megabytes. But it seems they are not covered by the snapshot (at least not the custom uncompressed one).

My question is: How can I easily transfer 4 megabytes of external data into the emulator? One possibility would be to generate a bunch of disk images. But loading the data inside the emulator would be quite cumbersome. Is there a better way?

Title: Re: Load audio samples to emulator memory
Post by: Jean-Marie on 06:02, 21 January 25

You could split your 4MB file into 64 files of 64 KB.
Then enter the following listing in WinAPE assembler :

Code Select

WRITE DIRECT -1,-1,#C2:ORG 0:incbin "file1.bin"
WRITE DIRECT -1,-1,#CA:ORG 0:incbin "file2.bin"
WRITE DIRECT -1,-1,#D2:ORG 0:incbin "file3.bin"
WRITE DIRECT -1,-1,#DA:ORG 0:incbin "file4.bin"
WRITE DIRECT -1,-1,#E2:ORG 0:incbin "file5.bin"
WRITE DIRECT -1,-1,#EA:ORG 0:incbin "file6.bin"
WRITE DIRECT -1,-1,#F2:ORG 0:incbin "file7.bin"
WRITE DIRECT -1,-1,#FA:ORG 0:incbin "file8.bin"
WRITE DIRECT -1,-1,#8C2:ORG 0:incbin "file9.bin"
WRITE DIRECT -1,-1,#8CA:ORG 0:incbin "file10.bin"
WRITE DIRECT -1,-1,#8D2:ORG 0:incbin "file11.bin"
WRITE DIRECT -1,-1,#8DA:ORG 0:incbin "file12.bin"
WRITE DIRECT -1,-1,#8E2:ORG 0:incbin "file13.bin"
WRITE DIRECT -1,-1,#8EA:ORG 0:incbin "file14.bin"
WRITE DIRECT -1,-1,#8F2:ORG 0:incbin "file15.bin"
WRITE DIRECT -1,-1,#8FA:ORG 0:incbin "file16.bin"
WRITE DIRECT -1,-1,#9C2:ORG 0:incbin "file17.bin"
WRITE DIRECT -1,-1,#9CA:ORG 0:incbin "file18.bin"
WRITE DIRECT -1,-1,#9D2:ORG 0:incbin "file19.bin"
WRITE DIRECT -1,-1,#9DA:ORG 0:incbin "file20.bin"
WRITE DIRECT -1,-1,#9E2:ORG 0:incbin "file21.bin"
WRITE DIRECT -1,-1,#9EA:ORG 0:incbin "file22.bin"
WRITE DIRECT -1,-1,#9F2:ORG 0:incbin "file23.bin"
WRITE DIRECT -1,-1,#9FA:ORG 0:incbin "file24.bin"
WRITE DIRECT -1,-1,#AC2:ORG 0:incbin "file25.bin"
WRITE DIRECT -1,-1,#ACA:ORG 0:incbin "file26.bin"
WRITE DIRECT -1,-1,#AD2:ORG 0:incbin "file27.bin"
WRITE DIRECT -1,-1,#ADA:ORG 0:incbin "file28.bin"
WRITE DIRECT -1,-1,#AE2:ORG 0:incbin "file29.bin"
WRITE DIRECT -1,-1,#AEA:ORG 0:incbin "file30.bin"
WRITE DIRECT -1,-1,#AF2:ORG 0:incbin "file31.bin"
WRITE DIRECT -1,-1,#AFA:ORG 0:incbin "file32.bin"
WRITE DIRECT -1,-1,#BC2:ORG 0:incbin "file33.bin"
WRITE DIRECT -1,-1,#BCA:ORG 0:incbin "file34.bin"
WRITE DIRECT -1,-1,#BD2:ORG 0:incbin "file35.bin"
WRITE DIRECT -1,-1,#BDA:ORG 0:incbin "file36.bin"
WRITE DIRECT -1,-1,#BE2:ORG 0:incbin "file37.bin"
WRITE DIRECT -1,-1,#BEA:ORG 0:incbin "file38.bin"
WRITE DIRECT -1,-1,#BF2:ORG 0:incbin "file39.bin"
WRITE DIRECT -1,-1,#BFA:ORG 0:incbin "file40.bin"
WRITE DIRECT -1,-1,#CC2:ORG 0:incbin "file41.bin"
WRITE DIRECT -1,-1,#CCA:ORG 0:incbin "file42.bin"
WRITE DIRECT -1,-1,#CD2:ORG 0:incbin "file43.bin"
WRITE DIRECT -1,-1,#CDA:ORG 0:incbin "file44.bin"
WRITE DIRECT -1,-1,#CE2:ORG 0:incbin "file45.bin"
WRITE DIRECT -1,-1,#CEA:ORG 0:incbin "file46.bin"
WRITE DIRECT -1,-1,#CF2:ORG 0:incbin "file47.bin"
WRITE DIRECT -1,-1,#CFA:ORG 0:incbin "file48.bin"
WRITE DIRECT -1,-1,#DC2:ORG 0:incbin "file49.bin"
WRITE DIRECT -1,-1,#DCA:ORG 0:incbin "file50.bin"
WRITE DIRECT -1,-1,#DD2:ORG 0:incbin "file51.bin"
WRITE DIRECT -1,-1,#DDA:ORG 0:incbin "file52.bin"
WRITE DIRECT -1,-1,#DE2:ORG 0:incbin "file53.bin"
WRITE DIRECT -1,-1,#DEA:ORG 0:incbin "file54.bin"
WRITE DIRECT -1,-1,#DF2:ORG 0:incbin "file55.bin"
WRITE DIRECT -1,-1,#DFA:ORG 0:incbin "file56.bin"
WRITE DIRECT -1,-1,#EC2:ORG 0:incbin "file57.bin"
WRITE DIRECT -1,-1,#ECA:ORG 0:incbin "file58.bin"
WRITE DIRECT -1,-1,#ED2:ORG 0:incbin "file59.bin"
WRITE DIRECT -1,-1,#EDA:ORG 0:incbin "file60.bin"
WRITE DIRECT -1,-1,#EE2:ORG 0:incbin "file61.bin"
WRITE DIRECT -1,-1,#EEA:ORG 0:incbin "file62.bin"
WRITE DIRECT -1,-1,#EF2:ORG 0:incbin "file63.bin"
WRITE DIRECT -1,-1,#EFA:ORG 0:incbin "file64.bin"

Each line will fill up 64 Kb of RAM. Note that WinAPE is terribly slow when using the incbin directive.
It will look like it entered in a deadlock, but it will succeed eventually.

Title: Re: Load audio samples to emulator memory
Post by: McArti0 on 08:39, 21 January 25

Mayby M4 board in CPCemu?

Title: Re: Load audio samples to emulator memory
Post by: lightforce6128 on 00:31, 22 January 25

Quote from: Jean-Marie on 06:02, 21 January 25You could split your 4MB file into 64 files of 64 KB.
Then enter the following listing in WinAPE assembler : ...

I like this approach. This a big bunch of files, but all can be generated automatically, and all can be read in automatically.

Title: Re: Load audio samples to emulator memory
Post by: lightforce6128 on 00:50, 22 January 25

Quote from: McArti0 on 08:39, 21 January 25Mayby M4 board in CPCemu?

I do not have experience with CPCemu. I need to see how things are organized there.

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General Category => Emulators => Topic started by: lightforce6128 on 03:44, 21 January 25