Re: CIA old/new?

From: smf <smf_at_null.net>
Date: Tue, 5 Jan 2021 18:14:35 +0000
Message-ID: <82f6d75f-23f4-186e-4ce2-5bf3b09fc740_at_null.net>
On 05/01/2021 17:25, Jim Brain wrote:
> The "write and then check if it worked" aspect of the VDC is horrible.

I agree that it's particularly annoying, I've used the VDC from c64 mode
and the code complexity balloon as soon as you take the code you wrote
based on the manual, to what is necessary to run on each VDC. It's not
the only bit of hardware I've ever had to hand hold to get to work though.

The NTSC vic2 with different speed, the SID with different filter
responses, the CIA with different timing are all annoyances & at least
the VDC workround is obvious while these can require a lot of head
scratching.

On 05/01/2021 17:25, Jim Brain wrote:
> The filters in the SID were not the designer's fault.  He hated that
> they were not finished/well done, but the mgmt team gave him no more
> time to finish.

I know, I'm not talking about blame. Regret doesn't make a design
better. VIC2 and SID are exciting chips, the sprites & cool sounds make
you love them. Love can make you blind.

VDC is not an exciting chip, it has no redeeming features.
Received on 2021-01-05 20:00:21

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