Re: [cc65] Banking out ROM

From: Daniel Serpell <>
Date: 2009-11-15 17:20:37

On Sun, Nov 15, 2009 at 12:53 PM, Fatih Aygün <> wrote:
> Christian Grössler wrote:
>> I don't remember how exactly I came up with the $2E00 value. Maybe it
>> was with a big DOS (MyDOS for many drives) and loaded R: driver.
>> I selected it to have a working default value for most cases. Remember,
>> the space for the R: driver is not dependent on whether the program uses
>> R:, but whether a 850 is being present at boot time.
> I was thinking that it's not the most common configuration (probably because
> I don't have a 850). But making the default value work for most cases makes
> sense to me now.

Another possibility is loading a little routine first to check if MEMLO is
less than the STARTUP load address, printing an error if the load would

Check this crt0.s:
with this config:

This works in dos2.5, mydos and bwdos at least.

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Received on Sun Nov 15 17:20:51 2009

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