[Coco] CUBIX on the CoCo?

[jdaggett at gate.net]

Portal-9 can handle includes with no issues. Actually some of the OS code could be 
ported to Portal-9 as libraries and allow one to build a custom system. 

What I see as the first major work in porting is the keyboard scan. Looks as if Cubix 
is looking at a serial port and uses a serial mouse.

Unless one adds hardware to the Coco, the OS will have to work with the PIA chip 
and generate the scan and poll routines to use the Coco keyboard. After that writing 
a driver for the WD1773 controller is the next hurdle. 

Portting the I/O range up to $FF00 is not that difficult. The Coco3 can have the 8K 
ROM sit at $E000 with little difficulty as long as the upper 512 bytes do not contain 
code. Ram then can be from $0000 to $BFFF. 

That should get it to boot to a simple system. Being able to work with the full extent 
of the memory map and working with the graphics of the basic roms would be a 
nicity but not necessary at the beginning. 


james

On 29 Oct 2005 at 14:45, Robert Gault wrote:

Date sent:      	Sat, 29 Oct 2005 14:45:12 -0400
From:           	Robert Gault <robert.gault at worldnet.att.net>
To:             	CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Subject:        	Re: [Coco] CUBIX on the CoCo?
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> The common Coco assemblers have INCLUDE which means one can have many
> separate source files merged together during assembly.
> 
> Dave Dunfield wrote:
> > At 10:08 29/10/2005 -0400, you wrote:
> > 
> ><snip>
> > 
> > The OS is conditionally assembled as one large source file which is
> > created from several input files with my MACRO preprocessor. There
> > are .BAT files in my source tree which do this for you (there should
> > be directions).
> > 
> > For assembling it under a different toolset, probably the easiest
> > thing to do would be to run my MACRO to generate a single .ASM file
> > which you could then work on.
> > 
> > Regards,
> > Dave
> > 
> 
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