Re: C64 PCB

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Sun, 07 Jul 2013 16:31:08 +0200 Message-ID: <51D97BAC.2000106@laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 07/07/2013 03:59 PM, silverdr@wfmh.org.pl wrote:
>
> On 2013-07-07, at 15:15, Gerrit Heitsch wrote:
>
> I think I have this KU photo from you already (1894x953 px)
>
>> As for the raster... so far all boards I had use a raster based on 1/10th" (2.54mm), not only between pins, but also between ICs.
>
> I mean the ROM chips placement raster.

So do I... The later boards have 2 ROMs spaced apart 5,08mm (You can put 
one extra component hole between them. Between ROM and CIA, you have 
7,62mm (3/10th") space (space for 2 extra component holes). The ROMs are 
twice that wide (15,24mm or 6/10th")

Just checked on the KU, there you have space for 3 pins between the 
ROMs, making it 10,16mm. So a ROM is 15,24mm wide, the space between 
them is 10,16mm which will give you 25.4mm between Pin 1 of 2 ROMs. That 
would be 1".

  Gerrit

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