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thierer / sd2iec

Cloned from https://www.sd2iec.de
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Slight documentation comment regarding Hypra Load #6

Closed Kugelblitz360 closed 3 months ago

Kugelblitz360 commented 5 months ago

Docs currently say:

Hypra-Load

Hypra-Load uses the ATN line for handshake, so it only works if no other device is connected to the IEC bus.

which is true for Hypra Load V1 (from 64'er 10/84), but not for V2.1 that was published in special issue 6/85 (which also has several other bugs fixed).

But: THANK YOU for giving Hypra Load some extra love after all these years.

Boris

thierer commented 5 months ago

I actually wasn't aware of that version, thanks for the heads-up! I'll have a look and might add support for it, if the protocol doesn't differ too much from the original. At the very least I'll mention it in the docs.

From a quick check (haven't looked at the code yet) it doesn't seem to special-case directory loading so that doesn't work?

But: THANK YOU for giving Hypra Load some extra love after all these years.

Oh, thank you. Hypra-Load was quite the revelation for me, when it came out. My only question would be if you trolled us on purpose by making us type in multiple DATA lines of kernal code :smile:

Kugelblitz360 commented 5 months ago

https://www.c64-wiki.de/wiki/Hypra-Load/Quellcode_2.1

I was pretty proud of my reuse of the filename to allow Uparrow-Star-Filename to autoload.

And as you may remember, my parents (and Karstens parents) landline phone number was in the listing. The stupidest thing Karsten and I ever did because of course the listing was slightly misprinted (one line unreadable).

1.0 in hindsight is a really bad version. We were young and there was a deadline.

thierer commented 5 months ago

https://www.c64-wiki.de/wiki/Hypra-Load/Quellcode_2.1

I wasn't aware of that documentation, neither. Thanks! For a moment I thought my own analysis, which I did when I implemented support for the 1.0 version in the sd2iec firmware was unnecessary, but the wiki entry was added later.

1.0 in hindsight is a really bad version. We were young and there was a deadline.

I think that's too harsh. I personally never noticed any of the shortcomings (the floppy drive was my only IEC device, so I didn't mind it using the ATN line, either). Plus at the time a lot of the knowledge just wasn't as readily available as today. Though I understand that before Karsten's book english language books already existed that you/he probably had access to.

Of course later fastloaders improved on the existing ones, that's how innovation works. And that innovation is still happening in that space today only shows how much there was still to be discovered.

thierer commented 3 months ago

Documentation updated and 2.1 support implemented in d51a9b67.