Not a single card but actually one of four … and technically not a card at all but they are card shaped. These are the ‘cards’ that connect a group of five cards together in each card bay (W, X, Y and Z). Each carries a selection of lines and busses to the cards it holds and also hosts connections to the ribbon cables taking the busses and control lines of to other backplane cards and areas of the computer.
Below is a list of the blog articles relating to this card (in reverse date order):
05 Nov 2022 - 3 min read
Quite a while ago I decided to give up on the tedious wire wrap technique for building my cards. Although it was certainly more authentic and in-keeping with my …
04 Mar 2019 - 12 min read
After years of using pad/prototyping boards to build my computer I’ve decided to switch things up a bit and have a go at making a custom PCB. The thinking is that it …
14 Jan 2019 - 6 min read
In my last post I touched on how the repetitive nature of making register cards has been putting me off progressing my relay computer. If you’ve followed my blog (over …
05 Nov 2017 - 8 min read
Miscellany Special: Backplane X, Cable Routing and Address Bus
Continuing on with the theme from my last post … here is another ‘miscellany special’ covering all the little ‘side jobs’ I’ve been doing …
11 Apr 2016 - 3 min read
W Backplane Construction & Power Distribution
Before I can test the new decoder, sequencer and controller cards all working together with the rest of the computer I need to construct the ‘W’ backplane which …
03 Dec 2013 - 4 min read
Backplane Design and Construction
Originally when I was thinking about how I’d connect up the various cards of this computer I had ribbon cables in mind. Ribbon cables are straightforward to use and …
