Re: Independent CPU/VIC-II setup

From: smf <smf_at_null.net>
Date: Wed, 2 Jun 2021 18:20:23 +0100
Message-ID: <c4d8d1b4-16cf-555a-b1e9-196f5343dd27_at_null.net>
On 02/06/2021 00:38, Jim Brain wrote:

> unless the app is video consumptive, in which case there was no point
> to push the VIC-II off the bus in the first place.

Unless he didn't realise what the overhead would be.

>   A few TTL ICs to buffer the busses and stretch the clock is well
> within most hobbyists.
>
> Time slicing SRAM access to VIC and CPU requires significantly more
> logic (data latches for reads, logic to know when to use them, etc.)
> and I think is well above the OP's current request.
>
You're essentially time slicing SRAM access either way, it's the
addition of a latch to shorten the vic2 fetch time slice that is the
main difference.

But of course it's up to him what he wants to pursue.
Received on 2021-06-02 20:00:05

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