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Re: Why use VIA in Mockingboard?

Subject: Re: Why use VIA in Mockingboard?
From: "David Wilson" <mcs6502@gmail.com>
Date: 22 Aug 2006 03:19:21 -0700
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Alex Freed wrote:
> Here is a question to anyone who programmed a Mockingboard:
> why were 6522 (VIA) chips used in the design?

Until I lay my hands on a copy of the AY-8910 datasheet this is pure
speculation - perhaps the setup/hold times for the chip are not met by
the /DEVSEL signal and it was easier to interface to it using a VIA to
generate chip select, read (and write?) signals with latched data on
the other VIA port?

Follow-Ups:
- Re: Why use VIA in Mockingboard?
  - From: "Michael J. Mahon" <mjmahon@aol.com>
- Re: Why use VIA in Mockingboard?
  - From: Mark McDougall <markm@vl.com.au>

References:
- Why use VIA in Mockingboard?
  - From: "Alex Freed" <alexf@mirrow.com>

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