commodore 64/128 question

[Teo Zenios]

----- Original Message ----- 
From: "Cameron Kaiser" <spectre at floodgap.com>
To: <cctalk at classiccmp.org>
Sent: Friday, September 01, 2006 9:14 PM
Subject: Re: commodore 64/128 question


> Mind you, if someone offered me a 64 or a 128, I would choose the 128, if
> that helps you make up your mind. I don't have a C64 on my desk; I have a
> 128DCR, and I run all of my 64 software on it, plus all the added features
> of being a 128 (true 80-column 640x400 graphics with a CGA monitor; fast
> serial transfers; 16-64K of additional VRAM which can be accessed from 64
> mode as "cache"; and 2MHz mode). Really, the 128 is a very worthy
successor
> to the 64.

How much effort is the VRAM hack? What is involved?