Joined: July 2006
||Posted: July 26 2006,17:46
I've been digging into the Capio hardware and found an interesting chip FDC37C669 sitting on top of the daughter board. That's the plugin board with the printer & parallel port.
As you would expect this is an I/O device but the interesting part is that it also includes all of the interfaces for 2x floppy disk drives, an IDE bus driver and even infra-red.
The manufacturer of the FDC37C669 is SMsC.
After a quick scan through the datasheet it seems that all the I/O control/address lines are there so just a buffer/bus-transceiver is needed between this chip and the floppy or HDD plus of course power supply for the drive. The drive should then be visible to DSL after bootup.
I'm thinking adding a small 2.5" laptop HDD may make the Capio a lot more useable, but then noise/heat may become a problem. Also being able to temporarily add a floppy would make reprogramming the O/S a bit easier.
Anyone know how large a DOC this Capio can support (asuming the full system address bus is available on the board) as you can now buy much larger disk-on-chip parts, into the GB range. A 50MB or larger DOC could give room to get DSL running completely embedded, is this possible?