German - ZX81 Backplane project 2017
Posted: Sat Dec 02, 2017 9:51 pm
Dear folks,
during 2017 I started to develop some ZX81 extensions based on past developments done by the German ZX team, because I'd like to use a backplane holding a couple of differnet cards using the so called ZX96 connection, while some german folks where in favour for this, too.
Below you'll see a small picture showing the bus system as well as some cards connected to the system.
I need to mention that there are still some problems with a card called "BP005 - H4TH VDrive Board" when it's used together with the BP001 - Bus Driver card. I hope to solve this during winter time.
To make a long story short... I'd like to ask if there is some interest by the UK community, too? If so, I might offer PCBs and/or parts in 2018.
So here's a link to a drop box document I've written which is actually hosted by Paul (many thanks for that)
https://www.dropbox.com/s/3vx6mv9fjlktl ... 1.pdf?dl=0#
and here you can see the German thread (sorry as this is mostly in german language)
http://forum.tlienhard.com/phpBB3/viewt ... +Backplane
If there will be some interest, I will recalculate estimated PCB / parts and shipping costs.
Kind regards... Torsten
Update: I forgot to mention... we still face some timing issues with pokemon's ZX Blast Card... while this is under investigation.
during 2017 I started to develop some ZX81 extensions based on past developments done by the German ZX team, because I'd like to use a backplane holding a couple of differnet cards using the so called ZX96 connection, while some german folks where in favour for this, too.
Below you'll see a small picture showing the bus system as well as some cards connected to the system.
- ZX81 - BusDriver & Backplane Gespann #4 640x480.jpg (303.51 KiB) Viewed 2075 times
To make a long story short... I'd like to ask if there is some interest by the UK community, too? If so, I might offer PCBs and/or parts in 2018.
So here's a link to a drop box document I've written which is actually hosted by Paul (many thanks for that)
https://www.dropbox.com/s/3vx6mv9fjlktl ... 1.pdf?dl=0#
and here you can see the German thread (sorry as this is mostly in german language)
http://forum.tlienhard.com/phpBB3/viewt ... +Backplane
If there will be some interest, I will recalculate estimated PCB / parts and shipping costs.
Kind regards... Torsten
Update: I forgot to mention... we still face some timing issues with pokemon's ZX Blast Card... while this is under investigation.
