My first Z50Bus card

[Steve Cousins]

I've designed my first Z50Bus card.

It is called "SC117 v1.0 Prototyping Breakout" and is used to breakout signals to a solderless breadboard.

Here it is in use with a LiNC80 SBC1.

The card includes flexible I/O address decoding, so you don't need to include such circuitry on every prototype. The decoding has jumpers to configure the start address and range. This includes allowing partial decoding with shadow addresses.The address decoding circuit provides an I/O enable signal (/IOEN) and also separate read and write versions (/IORD and /IOWR). This range of enable signals allows easy interfacing to most I/O devices.It is an open source design.PCB files are at EasyEDA.comDocumentation is available at scc.me.uk     The PCB is also available at Tindie,com  Steve
 

[Jon Langseth]

It is exciting for me to see the first Z50Bus expansion made my someone other than me.

This breakout card has a nicely thought out design and layout, and is a very useful tool for creating new addons, general experimentation, and plain having fun with the expansion bus. One thing Steve did not mention, is that card is closely related to his SC115 Prototyping Breakout Board for RC2014 (also available via Tindie), and as such is a tried, tested and verified design.

I can easily recommend picking up one of these boards. It makes for a very nice workflow when experimenting or designing an expansion: Wire up on breadboard, using the SCC117 breakout to provide address decoding and access to signals, then soldering a prototype on one of my Z50Bus-protoboards (or similar) before committing a dedicated PCB :) 

On Tuesday, January 15, 2019 at 11:25:14 PM UTC+1, Steve Cousins wrote:

I've designed my first Z50Bus card.

It is called "SC117 v1.0 Prototyping Breakout" and is used to breakout signals to a solderless breadboard.

[snip] 

PCB files are at EasyEDA.com