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MyTDT-Mysoft / COCO-FastLoader

COCO Loader trough Audio sound card... to achieve rates over 1600 bytes/s (normal) and over 3200 bytes/s (double clock) (increases even more with compression)
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9999/S displayed at all times with WAV files #4

Open drencorxeen opened 3 years ago

drencorxeen commented 3 years ago

After seeing the comment on the YouTube video I had posted, I was wondering if there was a way to fix the 9999/S status when using the WAV only output?

I am thinking of using the 44KHz WAV files to create a Audio CD with required diagnostic software and other things as well :) So far have been enjoying testing the load comparisons. :)

MyTDT-Mysoft commented 3 years ago

yeah i can make it work based on wave time instead of realtime

Em seg., 4 de jan. de 2021 às 13:05, David Ladd notifications@github.com escreveu:

After seeing the comment on the YouTube video I had posted, I was wondering if there was a way to fix the 9999/S status when using the WAV only output?

I am thinking of using the 44KHz WAV files to create a Audio CD with required diagnostic software and other things as well :) So far have been enjoying testing the load comparisons. :)

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drencorxeen commented 3 years ago

Some of the things that come up when doing hardware testing and finally get to test some tools that have been sitting in the list of things to try. :)

Been wanting to try your FastLoader for a while now and finally was able to get to it.

Loving the load speed and so far it seems some other people are impressed as well. :D

MyTDT-Mysoft commented 3 years ago

hehe i wonder if i should experiment maximizing the speed with a 4x or 8x to load the loader... plus... trying to use max possible frequency for normal speed (73500hz with normal speed 5/3 faster... and then the max of 147khz for the 2x overclock... (with the ~1s reduction time on loading the loader) over 5kb/s without compression ... but i think that the audio circuitry of coco is made with UART standards so it probabily wont do well with frequencies above 115200. but who knows.

Em seg., 4 de jan. de 2021 às 17:37, David Ladd notifications@github.com escreveu:

Some of the things that come up when doing hardware testing and finally get to test some tools that have been sitting in the list of things to try. :)

Been wanting to try your FastLoader for a while now and finally was able to get to it.

Loving the load speed and so far it seems some other people are impressed as well. :D

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drencorxeen commented 3 years ago

I am not sure :)

There are so many options to try out :)

So far I have been using a Creative Labs USB audio device that is sitting right next to my CoCo 3 and another Creative Labs USB audio device next to the CoCo 2 and Dragon Tano.

So many options to play with I know :)

drencorxeen commented 3 years ago

Also on larger files on a CoCo 1 or 2 with the double speed poke enabled will not work reliably. I know the screen goes all funky, but when you go into double speed mode the RAM refresh is disabled and you start loosing bits out of the DRAM.

MyTDT-Mysoft commented 3 years ago

well i use block of 256 bytes... so every 256 bytes one can disable/enable the double speed... so a ram refresh cycle can be completed... thats enough, and i know by experience that at least my coco-2 been fine with it for 30kb files (like those showed by my 1-bit audio video.

Em seg., 4 de jan. de 2021 às 19:36, David Ladd notifications@github.com escreveu:

Also on larger files on a CoCo 1 or 2 with the double speed poke enabled will not work reliably. I know the screen goes all funky, but when you go into double speed mode the RAM refresh is disabled and you start loosing bits out of the DRAM.

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