Requesting Help to Load a .WAV file.

Discussion about ZX80 / ZX81 Software
Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Requesting Help to Load a .WAV file.

Post by Jgubash »

I'm unable to fully load a ZX-81 game I wrote in Machine Code 33 years ago. I tried Audacity with limited success and am even considering an Arduino or Schmidt-Trigger/Op-amp solution to clean up the pulses. Anyone care to take a crack at it? The cover is a bit embellished, but everyone did that.

Thanks,

Jeff
Jgubash@USFamily.Net
Attachments
Instructions.jpg
ZX-Onn_Cover.jpg
Audio_Files.zip
(9.92 MiB) Downloaded 101 times
ZX-Onn_Startup_Screen.jpg

Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Re: Requesting Help to Load a .WAV file.

Post by Jgubash »

Version 2 of the audio file, before any transformations were applied in Audacity.
Attachments
Audio_Files_Pre-Audacity.zip
(10.1 MiB) Downloaded 91 times

Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Re: Requesting Help to Load a .WAV file.

Post by Jgubash »

Not sure if the second ZIP file uploaded. Re-attaching.
Attachments
Audio_Files_Pre-Audacity.zip
(10.1 MiB) Downloaded 84 times

Fruitcake
Posts: 168
Joined: Wed Sep 01, 2010 10:53 pm

Re: Requesting Help to Load a .WAV file.

Post by Fruitcake »

I managed to load the file and run it, but the game screen remains static. However, pressing BREAK returns to BASIC and so it isn't crashing. Placing a breakpoint at 18823 shows that the machine code is being run at the correct entry point and it does go through the motions of regularly checking the keyboard. I think you'll need to step through the machine code to find out why the game is not moving anything about the screen.

ZX-ONN.p
(8.2 KiB) Downloaded 107 times

Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Re: Requesting Help to Load a .WAV file.

Post by Jgubash »

Interesting findings.

I'll post some other .WAV files of other applications and games for anyone to try to load.

Thank you for your attempt.

Jeff

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TMAOne
Posts: 178
Joined: Thu Aug 16, 2012 6:56 pm
Location: Waterloo, Ontario, Canada

Re: Requesting Help to Load a .WAV file.

Post by TMAOne »

Hmm, results through my own mechanism echo Fruitcake's results, although our files are not exactly the same. I got it to load apparently successfully, but it doesn't seem to respond to cursor arrow keys as expected. My failure could be a pebkac error. :oops:

Here's my result Jeff:
ZX-ONN.P
(8.2 KiB) Downloaded 96 times

And the equivalent as a clean .wav file:
ZX-ONN.zip
(76.96 KiB) Downloaded 97 times

How did I load it? With the Scrubber-Dubber discussed here: viewtopic.php?f=7&t=1211 This toy works folks. Let's get those kits rolling.

Ian

Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Re: Requesting Help to Load a .WAV file.

Post by Jgubash »

Thanks for the attempt.

Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Re: Requesting Help to Load a .WAV file.

Post by Jgubash »

Here's a ZIP file of ZX-ONN from another tape.

Good luck
Attachments
ZX-ONN_TapeB.zip
(5.67 MiB) Downloaded 90 times

User avatar
TMAOne
Posts: 178
Joined: Thu Aug 16, 2012 6:56 pm
Location: Waterloo, Ontario, Canada

Re: Requesting Help to Load a .WAV file.

Post by TMAOne »

Can't seem to load that one, as there are audible dropouts in the otherwise very clear track. Could it be that your PC was overloaded while recording the .wav file? Could you try dubbing it again?

Jgubash
Posts: 8
Joined: Sun Oct 21, 2018 9:01 pm

Re: Requesting Help to Load a .WAV file.

Post by Jgubash »

Here's a plethora of stuff I wrote: https://we.tl/t-elSVx3pZAI

As before, I've been having problems loading this 33 years stuff If you are able to load a copy, please share a .WAV or .P file.


Good luck.

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