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@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: >> >> http://www.vcfed.org/forum/showthread.php?71177-GW-DEC-1-A-New-Quad-Height-DEC-Prototyping-Board&p=582892#post582892 > > Was always hoping somebody would do something like that, but with the > bus interface already on it ...
