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Forums > C64 Coding > Help wanted for developing special disk loader
2020-04-15 05:47
proton_FIG

Registered: Jul 2019
Posts: 7
Help wanted for developing special disk loader

I'm looking for advanced programmers for developing special disk loader routine.

Background info: I developed working and fast IRQ-loader 32 years ago. Loader initiates using Kernal routines, then it invokes raster IRQ and does fast loading using two bits serial transfer. Now I need to modify it to on-demand loader where drive-code is initialized once and then stays in stand-by to load more without initiating the drive code again.
2020-04-15 08:38
JackAsser

Registered: Jun 2002
Posts: 1680
Quote: I'm looking for advanced programmers for developing special disk loader routine.

Background info: I developed working and fast IRQ-loader 32 years ago. Loader initiates using Kernal routines, then it invokes raster IRQ and does fast loading using two bits serial transfer. Now I need to modify it to on-demand loader where drive-code is initialized once and then stays in stand-by to load more without initiating the drive code again.


There are tons of loaders off the shelf, why not use them?

Such as Krill's Loader, Repository Version 184, Spindle 2.3 or Bitfire 0.6
2020-04-15 09:03
proton_FIG

Registered: Jul 2019
Posts: 7
Because I don't know which one does the magic I'm looking for.
I was sure that someone will ask me why?
Yesterday I took a look at krill's loader and my preferred environment didn't fit into the prerequisites.
So I'm following the ancient rule - - if you are doing something different and want to get it done, do it yourself.
I'm just looking for some help.
2020-04-15 09:07
Krill

Registered: Apr 2002
Posts: 1475
Quoting proton_FIG
Yesterday I took a look at krill's loader and my preferred environment didn't fit into the prerequisites.
You know that you only need to build it once, then incbin the two binaries in your code? (Plus there are prebuilt binaries.) The loader's and your build environment are basically orthogonal.
2020-04-15 09:11
proton_FIG

Registered: Jul 2019
Posts: 7
No, I did not.
How does it work with running irq?
2020-04-15 09:14
Krill

Registered: Apr 2002
Posts: 1475
It's arbitrarily interruptible. They all are. :)
Using 2bits+ATN protocol, there are no restrictions of sprites, DMA, IRQ or NMI usage.
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