Re: Commodore 8296GD

From: Steve Gray <sjgray_at_rogers.com>
Date: Mon, 1 Oct 2012 21:58:37 -0400
Message-Id: <1068E618-5A72-4920-9E05-3BC419D8A7F6@rogers.com>
Are we talking piggybacked board or chips? For this board you remove the crtc and chrrom chips from the 8296, install the board, then put the chips on this board. One crtc chip.

 When you say piggybacked i think of leaving the existing chip and placing another chip directly on top.. Hence two chips.

The other board has no relation to this board, its just an example of a graphics board that adds another crtc to the existing one.

Steve


On Oct 1, 2012, at 7:13 PM, "Anders Carlsson" <anders.carlsson@sfks.se> wrote:

> Hello,
> 
> Rhialto wrote:
>> The first post mentioned that it was piggybacked onto the character generator ROM and the CRTC... and so the one on the board is a *second* CRTC?
> 
> Steve Gray wrote:
>> No, the original CRTC chip and CHARROM are transplanted to this board. [..] However, there IS a DIFFERENT graphics card for PET that contains it's own CRTC chip.
> 
> Unless I'm completely confused, the board Michal found in his 8296D was piggybacked onto the ROM and CRTC, so if both boards are of the HR(G)E variety, perhaps there were different ways to implement it?
> 
> Best regards
> 
> Anders Carlsson
> 
> 
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Received on 2012-10-02 02:00:59

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