Re: Hardware emulation of 6509 using 6502?

From: smf <*smf_at_null.net*> Date: Wed, 7 Mar 2018 00:23:02 +0000 Message-ID: <37ea5769-ae45-2879-67be-387f76876613@null.net> · smf_at_null.net

On 06/03/2018 21:56, Michał Pleban wrote:
> What they did really mess up, in my opinion, was the ability to call
> code across banks. With the 6509, it is a major pain and requires lots
> of setup, overhead and careful planning and code layout. They should
> have created an easy method of calling KERNAL from any bank (maybe by
> creating a 6509-specific instruction?) and this would allow for easy
> writing large programs utilizing several banks of memory.

A better design would be a couple of memory windows (like the commdore 
lcd or commodore 128).

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