Double Density Adapter for Radio Shack TRS-80 Model I

This Double Density adapter is an update of the old Percom Doubler for the TRS-80 Model I.  This new design uses fewer components but its made from all new parts. 

Works with any operating system that worked with the original Percom Doubler.

2 are shown in the picture to show both sides of the board. Only 1 is included with the order -

We sell 3 different Variants -

1) No floppy controller chips (You must supply your own FD1771 or equivalent (Usually taken out of the Expansion Interface where you plug this into) and your own FD1791 or equivalent)

2) Only FD1791 or equivalent supplied. (You must supply your own FD1771 or equivalent (Usually taken out of the Expansion Interface where you plug this into)

3) Both FD1771 or equivalent and FD1791 or equivalent supplied. (This is generally not needed until you have a bad or missing FD1771 from your Expansion Interface)