On 2013-07-07, at 16:31, 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") This methodology is a bit "overengineered" to me ;-) What counts is actually the distance from pin 1 of one of the chips to pin 1 of the adjacent chip. This way we don't need to involve any arithmetics. > 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". If you have a caliper, could you please just measure the distance from pin 1 to pin 1? I am somewhat anxious with this calculated 1.0" -- SD! Message was sent through the cbm-hackers mailing listReceived on 2013-07-07 17:02:00
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