[Coco] CoCo gcc project

[jdaggett at gate.net]

Tim:

I was thinking the same. Since the code is already an OS9 module, all the compiler 
will have to do is either stack or register the two floating point numbers and do an 
OS9 link to the module. 

The code in the 6839 is a OS9 multi-module and was announced in the 1983 8-Bit 
microprocessor databook. It never appeared in any later datatbook releaes. It is not 
even certain that Motorola ever shipped the part. From the RSTI archives is a file 
called FP09 and here is a quote from it:

"From archamba at ERE.UMontreal.CA Sun Mar 13 11:00:22 CST 1994: 
40 of comp.sys.m6809: comp.sys.m6809: 
sandv!vpnet!tellab5!laidbak!psinntp!psinntp!newsserver.pixel.k
odak.com!rpi!utcsri!newsflash.concordia.ca!CC.UMontreal.CA!arc
hamba: archamba at ERE.UMontreal.CA (Archambault Benoit): Re: 
6809 math packageID: <CMI5tw.A70 at cc.umontreal.ca>: 
news at cc.umontreal.ca (Administration de Cnews): Universite de 
Montreal: Fri, 11 Mar 1994 13:37:06 GMT: 717



                                   F P O 9

                    Floating point routines for the 6809

                  Written for Motorola by Joel Boney, 1980
             Released into the public domain by Motorola in 
1988
        Docs and apps for Tandy Color Computer by Rich Kottke, 
1989"

>From this it appears that Motoroal released the code to public 
domain in 1988. The .S19 file I have. I also have the 1983 
databook. There maybe no licensing issues other than the GNU 
public licensing. Also the code may have been totally written 
before IEEE 754-1985 was adopted. The source will need to be 
reviewed to make sure that it does.

james



On 2 Nov 2003 at 9:29, tim lindner wrote:

> Neil Morrison <neilsmorr at hotpop.com> wrote:
> 
> > ISTR that you could buy a math library in a rom chip for some of
> > these, 6800 or 6809 IIRC. But I know of no FPU for them.
> 
> Back when I was contemplating contributing the the GCC port for the
> CoCo, I though this chip would make a great library for the project.
> 
> Then a few months later, on the FuFu list, Joel Setton offered to send
> anyone asking a CD-ROM containing tons of information regarding that
> chip.
> 
> Here is was I got:
> 
> **************************************
> MC6839 Archive CD-ROM
> 
> ---------------------
> 
> This CD contains all the information which I could consolidate on the
> Motorola MC6839 Floating-point ROM. If you are interested in
> floating-point computing on the 6809, all you need is on this CD:
> 
> * The root directory contains the 6839 data sheet and manual, each of
> themin both Microsoft Word and PDF formats.
> 
> * The "Binary Code" directory contains two images of the ROM, one in
> Motorola S1-S9 format, and one in the Flex .BIN format. As explained
> in the documents, this code is position-independent and can run at any
> location in memory.
> 
> * The "Data Sheet" directory contains scanned graphic files of the
> data sheet.
> 
> * The "Manual Pages" directory contains scanned graphic files of the
> manual.
> 
> * The "source code" directory contains the assembler source files,
> which were originally published by Motorola.
> **************************************
> 
> I think this code would be very useful for the GCC/CoCo project. But
> in order to distribute licenses will need to be resolved.
> 
> -- 
> tim lindner
> tlindner at ix.netcom.com                                   Bright
> 
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