Re: Difference between R65C02 and original 6502 (wrt 6509 emulation)

From: smf <*smf_at_null.net*> Date: Thu, 18 Apr 2019 16:06:56 +0100 Message-ID: <ea84ad53-ea27-26da-5e81-03570a2100bb_at_null.net> · smf_at_null.net

If you are always going to switch back to 6509 mode to run rom code and
you will always switch from 816 mode to the previous 6509 mode
(including any oddities of irq/nmi/reset) then hiding them seems reasonable.

That may require a trampoline to call from 816 to 6509 in another bank,
but it's doable as long as there is ram there. Although in 816 mode you
won't know what bank the 6509 is currently setup to use & will have to
make assumptions

On 18/04/2019 15:56, Michał Pleban wrote:
> For me it makes the most sense to hide them.
>
> Regards,
> Michau.
>
>