Investigations (Graphtext 128 (UK))

[spectrumcomputing]

Hi,

Thanks for providing these tools. I'm trying to convert a game called Investigations which is available here:

https://spectrumcomputing.co.uk/entry/10833/ZX-Spectrum/Investigations

When I use tzxtap I get this error:

mint@mint:~/Downloads$ tzxtap Investigations.tzx
Error: Block 0 has no data content

I tried running tzxcleanup and got:

Noise blocks removed:        0
Blocks with CRC errors:      0
Blocks written:             27

Is there any way of fixing this?

Many thanks

[shred]

tap is a very limited file format compared to tzx. Whenever tzxtap cannot convert a tzx block to tap because it's not supported in the tap format, this error is reported. This way it avoids data loss and broken files that cannot be loaded later.

You can use the --ignore option here. If tzxtap discovers an unsupported block type, it will then just show a warning, and ignore that block.

You should also give an -o option for the tap output file name. In your case it would be:

tzxtap --ignore -o Investigations.tap Investigations.tzx

[shred]

I had a closer look at your file. The first block is just a comment block. It would not break the tap file if it is ignored, so tzxtap should not exit with an error here.

I will make tzxtap a bit more relaxed about blocks that can safely be ignored. Thank you for the report! 😄

[spectrumcomputing]

Thanks @shred. Much appreciated.

[shred]

With the next release, tzxtap will just report a warning on comment blocks that can safely be ignored. The --ignore option will still be there for data blocks that cannot be converted, but if set, the resulting TAP file will likely be unloadable.