I recently bought a memory board Legend Industries 128KDE Soft Disk
I found some documentation on the web (a manual in pdf)
the board described in the pdf has a flag cable linking the board to the motherboard
(as a standard language card)
the one I received is without this flat cable
the socket for the 4116 is missing and in place there are (apparently 2 capacitors)
the socket with the flat cable contains a 74ls04
I checked the tracks it is clear that this board was not designed to contains a 4116
are you aware of the 2 versions of this board ?
any schematics somewhere ?
any manual ?
I compare the photo of both board, the electonics looks almost the same ?
any idea of the use of the flat cable connected on a 4116 ?
I thought it was for ras/cas but apparently they are regenerated by the board
any idea ?