oops, it stripped the attachment. try here:
http://www.qotile.net/temp/cynth11.kernel

-paul

Paul Slocum wrote:
>
> sorry this took forever. try this one.
>
> -paul
>
> mdzron wrote:
> >
> > Thanks again, Paul, for the link to your basic rom package. Of course,
> > that version is
> > running but I'd really like to have the advanced 1.1 features inside ;)
> >
> > After fiddling with your 1031 basic I still had no luck in applying a
> > basic ROM replacement
> > patch on the current version. Maybe you remember what has to be done?
> > What I could see
> > after looking at the binary structure is like this:
> >
> > ----------------------------------------------------------
> > cnth1031.basic header disassembled:
> >
> > $0000 94 E3 ; pointing to kernal reset routine E394
> >
> > $0002 7B E3 ; pointing to kernal warmstart entry E37B
> >
> > $0004 0D A0 ; guess this points to where the hacked basic.rom is
> > appearing (starting at
> > $A000) - pointer to kernal subroutines (see $000D)
> > $0006 0D A0 ; same
> >
> > $0008 C3 C2 CD 38 30 ; Autostart command "CBM80" - but I think this is
> > redundant,
> > there's nothing at $8000?!?
> >
> > $000D 78 ; SEI - set interrupt mask
> >
> > $000E 20 84 FF ; jump to kernal subroutine FF84 = init I/O devices
> >
> > $0011 20 87 FF ; jump to kernal subroutine FF87 = init memory pointers
> >
> > $0014 20 8A FF ; jump to kernal subroutine FF8A = restore I/O vectors
> >
> > $0017 20 81 FF ; jump to kernal subroutine FF81 = initialise screen /
> > keyboard
> >
> > $001A 58 ; clear interrut mask
> >
> > $001B-0028 EA ; NOP - no operation (guess not to crash kernal routines
> > looking for
> > BASIC things around there?)
> >
> > $0029-0482 FF ; not used
> >
> > $0483 ; program starts here (ROM appearing at $A483 = standard BASIC
> > warmstart
> > routine - guess this is where the Kernal is starting the program after
> > init sequences.
> >
> > $0CFA ; end of program code (followed by FF to fill the 8K ROM)
> >
> > ----------------------------------------------------------
> >
> > However what comes now, how to put in program code after $0483?
> >
> > I think the basic starter (SYS 2061) has to be removed. How about
> > absolute and relative
> > addresses? Did you tweak them manually to get Cynthcart1031 running
> > off the BASIC
> > ROM? Could you maybe provide the unpatched Cynth1031.PRG so I may
> > compare the code
> > to solve the mystery?
> >
> > Besides running Cynthcart without a cartridge attached it would be
> > nice to improve
> > breadbox knowledge anyways ;)
> >
> > Thanks for your attention.
> >
> > ron.
> >
> >
>
> [Non-text portions of this message have been removed]
>
>