Re: [cc65] simple linker question

From: Ullrich von Bassewitz <uz1musoftware.de>
Date: 2005-12-09 12:57:33
On Fri, Dec 09, 2005 at 12:43:43PM +0100, Jørgen Aaris Henningsen wrote:
> I'm programming to a simple 65c02 system with 32kB RAM (from 0000 to 8000)
> and 32 kB ROM (from 8000 to FFFF).
> When I make the reset vector in the prom, should I then make it point to
> the 'main' function or should I use another entry point?

If you're writing code for a new machine, you will have to rewrite the startup
code, which is responsible for setting up the C stack, initialize the
libraries and other environmental stuff. You may want to have a look at one of
the existing startup files. They are in the libsrc/<platform> directories and
named crt0.s. The resulting object file is then called <platform>.o. If the C
code should be executed when the devices comes up, the reset vector should
point to the entry point of the startup code.

Regards


        Uz


-- 
Ullrich von Bassewitz                                  uz@musoftware.de
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Received on Fri Dec 9 12:57:53 2005

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