Re: PET/CBM Editor ROM Project

Hi Andre,

I'll look into it. I'm worried about space requirements. Yes, I verified one more fixed entry point today, so now its up to 3. I wonder if later BASIC or KERNAL ROMS were changed to go through the jump table, or if Commodore never bothered to fix them... there must have been a reason to add the table in the first place.

Steve

 

________________________________
 From: A. Fachat <afachat@gmx.de>
To: cbm-hackers@musoftware.de 
Sent: Thursday, December 12, 2013 6:00:21 PM
Subject: Re: PET/CBM Editor ROM Project
  


Hi Steve,

that looks like an awesome project. Here's one thing you
could probably add: my serial line driver (for a UART 16550 though,
not for a 6551) - so you can run BASIC via serial line. It's in
the Driver section here:
http://6502.org/users/andre/csa/gecko/index.html

What I noted is that the BASIC and rest of the kernal ROM actually
jump directly into some entry points, and not via jump table.
So you have to work around those entry points.

André


On Tuesday 03 December 2013 08:00:30 you wrote:
> Hi all,
> 
> I have started a new project, which is kind of an extension to my ColourPET
> and Keyboard Replacement projects. This is a project to create PET/CBM
> Editor ROMs. This will eventually allow anyone to build an Editor ROM
> containing any combination of 40/80 column screen, N/B/DIN/C64 keyboard,
> 50/60 Hz, or custom video setting (such as NTSC or PAL), plus addition
> features such as ColourPET, C128 ESC sequences, Soft-40 column, autoboot,
> or keyboard reboot.
> 
> You can find my web page here:
> http://www.6502.org/users/sjgray/projects/editrom/index.html
> 
> The code is available on GitHub here:
> https://github.com/sjgray/cbm-edit-rom
> 
> There is still a lot to do, and I'm hoping there might be some others here
> that can lend a hand.
> 
> Steve


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