Internal HD20 emulator for Plus/512ke using Tashtwenty

[cheesestraws]

I've built an internal HD20 emulator for the Plus and (presumably) the 512ke (but I don't have a spare logic board to socket the IWM on, so...). It sits between the IWM and the logic board, which allows it to be internal while still letting the floppy port on the back of the machine works. It also makes an attempt to look pseudo-period - although nothing with an SD card slot will ever look really period. The things we do for ease of use.

This does mean you need to socket the IWM, which can be a painful thing to attempt - attempt at your own risk! - but the board itself is fairly easy to build.

Here it is working.


View attachment IMG_2936.MOV

Board files and details are at https://github.com/lampmerchant/tashtwenty/tree/main/pcb/Internal

 

[mg.man]

This does mean you need to socket the IWM, which can be a painful thing to attempt

Ah ha... hence the need for a couple of Plus logic boards? Don't worry, haven't forgotten - just Mac-time-poor atm!

Neat design - well done!!

 

[Iesca]

Wonderful!