Re: c64 improved dos kernal routines?

From: Terry Raymond <traymond160_at_gmail.com>
Date: Mon, 11 Dec 2017 12:42:01 -0700
Message-ID: <CAJ+D7=PNvbGgoYPOPV_wLyzBjFO_krHLLzJx5HM1BRNw8trELw@mail.gmail.com>
I believe Jim Brain has open source for SD2UIEC possibly on his website.

Terry Raymond


On Dec 11, 2017 7:39 AM, "Marko Mäkelä" <msmakela@gmail.com> wrote:

On Mon, Dec 11, 2017 at 05:56:14AM -0500, Nick Vivid wrote:

> Well, as much as I'd love to patch the c64 side of the jiffydos kernal
> into my software i have a feeling that would be some bad karma coming  back
> at me for distributing/incorporating jiffydos (or jaffydos) with my program.
>

Could SJLOAD be an option? I figured out that for my purposes (a flash
programmer for the Ultimem for the Vic-20) it was easiest to use the
standard KERNAL routines, but at the same time ensure that the program
works while SJLOAD20 is loaded into the Vic-20 RAM.

Linking my code to SJLOAD would certainly have been technically possible. I
even started some work towards it, but in the end I decided that a modular
solution is cleaner, and removes any doubt regarding copyright license
compatibility. (I wanted to distribute my code under the terms of the GNU
GPLv2.) The SJLOAD is a bit like a loadable device driver or operating
system module.

It is not that hard to use the fastloader, as you can see in
http://www.iki.fi/~msmakela/8bit/ultimem/#install

Basically, it is only an extra step of LOAD and SYS. In the case of the
Vic-20, there also is an extra step of enabling RAM in the area where
SJLOAD is loaded.

        Marko


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Received on 2017-12-11 20:00:03

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