Re: DATA BUS enable for IO0 on VIC-20

From: Jim Brain <*brain_at_jbrain.com*> Date: Fri, 27 May 2016 22:59:26 -0500 Message-ID: <431363f5-4461-6e8b-0aa8-ee7b502bda97@jbrain.com> · brain_at_jbrain.com

On 5/27/2016 2:45 AM, Segher Boessenkool wrote:
> On Fri, May 27, 2016 at 01:58:06AM -0500, Jim Brain wrote:
>> It is late, and so I will admit I might have missed my answer, but I've
>> pored over the schematics for the VIC-20 on zimmers for a bit and I
>> can't see how the data bus '245 is enabled for the IO range (IO0, noted
>> on the schematic).
> Maybe just because S02 is on?
>
>
> Segher
>
>         Message was sent through the cbm-hackers mailing list

Yeah, I guess the fact that all of the other lines coming in messed me up.

But, why gate the databus to all of the RAM and ROM areas?

Jim

-- 
Jim Brain
brain@jbrain.com
www.jbrain.com

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