hah@mipon3.intel.com (Hans Hansen) (07/28/88)
In article <801@trwspf.TRW.COM> knurlin@trwspf.UUCP (Scott Karlin) writes: $In article <128@dms3b1.UUCP> dave@dms3b1.UUCP (Dave Hanna) writes: $>In article <3667@omepd> hah@inteloa.UUCP (Hans Hansen) writes: $>>Information about a prototyping board from NES. Dave: $>does it include the auto-config logic? If not, are you/they considering $>a board with the auto-config logic? Scott: $I can't speak for the NES board, but the Celestial Systems board $does not have the auto-config artwork. I designed the layout, and I $didn't want to "force" my auto-config design on anyone else. The logic $can be implemented with anything from individual gates to EPROM to $PALS to ASIC. The "gotcha" is that the logic must give unique $information to the system so that the system can find the right piece $of software for your board. The circuitry is not difficult. I $wanted to give the designer flexibility. By the way, the Celestial $Systems board has gold-plated fingers for the Amiga connector only $(boards with the AT connectors cannot fit into every slot), a low ***** NOT True !! We have plugged our board into all of the ZORRO II and AT slots in 3.9/4.2 and 4.3 B2000 mother boards with narry a problem. $inductance power distribution layout (for those high-speed designs), I designed this board with and ULTRA HIGH Power and Ground plane capacity to handle the latest ultra fast TTL/CMOS components. The rule that I used was to have PWR & GND as close to the chips as possible. This also allows easy decoupling at the chip. The down side is that some of the board area is sacrificed for this, (please see pictorial included with original posting), however the high capacity PWR & GND busses easily offset the lost area. $Scott Karlin, Celestial Systems, (805) 582-0729 and... Hans Hansen, NES, Inc.