GW-DEC-1: A New DEC Prototyping Board
Guy Sotomayor Jr
ggs at shiresoft.com
Thu Aug 15 11:33:36 CDT 2019
Speaking from experience from having done a few Unibus boards now (none of them available yet unfortunately) that providing a general Unibus interface on a quad board will consume a reasonable amount of the board space and limit flexibility on which driver/receiver/transceiver parts that can be used. That’s just for the Unibus drivers. If you want to actually *run* the interface then you’re talking a lot more stuff.
Of course, the boards I’m doing are all SMD (with the exception of the unibus interface parts). I also have to add in 5v to 3.3v conversion. Even on a 4 layer board there’s lots of “congestion” which limits the number of parts that can actually placed on the board. :-(
TTFN - Guy
> On Aug 15, 2019, at 1:23 AM, emanuel stiebler via cctalk <cctalk at classiccmp.org> wrote:
> On 2019-08-15 02:13, systems_glitch via cctalk wrote:
>> Connor Krukosky and I have been working on laying out a new quad-height DEC
>> protoboard, which can also be sheared down into a dual-height board. Full
>> announce on the VC Forums:
> Was always hoping somebody would do something like that, but with the
> bus interface already on it ...
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