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Re: [colorforth] How to recreate the 31 July color.com


Dear Charley & John,

Firstly I should have said that I have a (very old) computer that runs colorForth and the disk and video work perfectly. Having saved colorForth I also can now boot it directly. Only the 31 July version works though--none of the modified or later variants boot.

What I am trying to achieve is to assemble the 'kernel' source, somehow add in the colorForth source (all that which I think available to edit from block 18 onwards) and then run this. MASM compiles and links the code to a DOS .COM file, so I then boot the computer with a DOS floppy and try running the program.

I've just been trying to find out where I picked up this idea from (I've downloaded so many bits and pieces I've lost track) and I've found it was zip file of Terry Loveall's 800x600 at http://modest-proposals.com/binary/c4-800x600-p2bd-02.zip but this specific version didn't work for me.

Jason

John Comeau said the following on 22/02/2008 19:16:
Hi Jason, the color.com file is what was saved after loading the
high-level colorForth code, so it has a lot more data in the lookup
tables than does the bare-bones code assembled from the sources. Also,
the sources have a glaring off-by-one error that causes code to load
at the wrong location, hence Charley's advice might work.

But even running it as a DOS program won't help if you don't have
exactly the right hardware. You might need to use a different
colorForth compiled for your own graphics card.

On Fri, Feb 22, 2008 at 11:14 AM,  <cshattuck@xxxxxxxxxxxx> wrote:
I vaguely remember that what was created with an assembler had to be run from a DOS boot disk.  In other words, it's a DOS program, not a native colorforth.  Am I wrong?  Then when and if it runs you can save it as a native colorforth floppy with SAVE.

 I hope that helps,
 Charley.



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