Re: The first "Lee Davison" Kernals

From: Jim Brain <>
Date: Sat, 15 Nov 2014 23:53:52 -0600
Message-ID: <>
On 11/14/2014 10:11 AM, Ruud Baltissen wrote:
> Hallo allemaal,
> I just uploaded and it 
> contains the source codes of the C64 V3 Kernal and JiffyDOS V6.01:
>  - C64-Lee.a65 is the header of the V3 Kernal
>  - C64-var.A65 contains the used variable
>  - C64-bas.a65 is the BASIC ROM
>  - C64-ker.a65 is the system ROM
>  - C64JD.a65 is both the header and system ROM for JiffyDOS
> Please have a look at them and tell me if there are things, like the 
> layout for example, you do or don't like.
> Next please have a look at the sources of JiffyDOS and look for '???'. 
> These are parts of code where things happen I don't understand or like 
> to know more about.
> Another thing I like to know: you can use the @ character to send 
> commands to the drive. The thing is: I cannot find the place where it 
> is actually done. I know the place where the @ is handled: ChkIfJdCmd3 
> / F838. Then a check is done for certain commands that are executed 
> using a table. If the command isn't found, JD continues at $F858. And 
> then I loose track.
> Any help is appreciated :)
> Met vriendelijke groet, Ruud Baltissen
>       Message was sent through the cbm-hackers mailing list
Not to be anal, but you might want to note in the C64JD file that the 
JD-specific code is (c) 2004 Mark Fellows and that folks using the 
compiled binary need a JD license (or however you want to word that stuff).

BTW, I think I have  commented disassemblies of 128 stuff when you're 
ready for them.


Jim Brain

       Message was sent through the cbm-hackers mailing list
Received on 2014-11-16 07:00:03

Archive generated by hypermail 2.2.0.