Model 3/Model 4 floppy drive interface.

[prime]

Hi all,

I keep seeiing refferences to the later versions of the Model 4 using a 177x based floppy controller (e.g. Wikipedia), but cannot find a schematic for this. Does anyone know if it is available and if so where?

Cheers.

Phill.

 

[pski]

The M4 GA uses a WD 1773 at U75.

You can find the schematic here: https://github.com/pski/model2archi...P_Schematics/8000225-GATE-ARRAY-MODEL-4-f.pdf