Re: If you were to put a graphics chip on an apple II card...

[Michael J. Mahon <mjmahon@aol.com>]

<aiiadict@gmail.com> wrote:
> On Wednesday, August 29, 2012 5:03:04 PM UTC-7, (unknown) wrote:
>> 
>> ftp://ftp.apple.asimov.net/pub/apple_II/documentation/hardware/video/Hi-Res%20Graphics%20TMS9918_BYTE%200882.pdf
>> 
>> Looks like a good one to start with.  The Byte card looks simple enough..
>> 
>> 
>> 
>> Rich
> 
> here's the story behind it:
> 
> http://www.trs-80.org/interview-paul-andreasen/

Hmmm. Well, it's certainly clear that his memory has faded a bit...  ;-)

The two-part article he refers to was in 80 Micro, not Byte. 

And, BTW, the design of the Circuit Cellar 9918 board is almost exactly the
standard "appnote" diagram, so no invention was evident at all. It is
particularly simple because the Apple II already has great I/O decoding. 
It's a 9918, DRAM, and an octal transceiver!  And the software support is
provided by TMS Logo. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon