[bogomipz]

Under the hardware section the author states:

>"I have built this development board by myself, using wrapping technique, because I couldn’t find any board with 2MB of SRAM arranged in 16bits. I wanted SRAM, instead of DRAM, for the simplicity."

I am have heard the term "wrapping" or "board wrapping" in historical references by Steve Wozniak and the original Home Brew Computer Club as well. Could someone describe what this "wrapping" process entails? Is this essentially translating the verilog into physical wires and pins?

[fasquoika]

It's a way of cold welding wires to the pins of electronics[1]. It's pretty much fallen out of usage as computers have gotten too small for the technique, but it's nice for prototyping because it's easier to undo than solder but more permanent than a breadboard

[1]: https://en.wikipedia.org/wiki/Wire_wrap

[blacksmythe]

  >> easier to undo than solder

Bonus fun - there would almost always be multiple wiring errors to find after wirewrapping.

You start with empty wirewrap sockets, wirewrap the board, then 'buzz' the board with an audio buzzer to check every connection, then add the electronic chips, then start debugging the circuit.

[F4HDK]

I still use wire-wrapping with veroboards quite often for my home hobby. I like this method, because above certain frequency, it is fairly difficult (quite impossible) to use Breadboards because of electromagnetic issues. The goal is to test different configurations, to rapidly test a new component, explore new ideas quickly. On Veroboard, the wire-wrapping method enables very dense connections.