Device IO

Cash drawer

Going to use javax.comm at the moment. It'll limit the current platforms, unfortunately, to Linux, Solaris and Win32 - although there may be a FreeBSD port by now. I'm not sure what exactly a cash drawer really understands in terms of instructions - probably just knows that when voltage is passed it needs to open.

In the event javax.comm fails for either me, or a user, JNI may come in handy, or a native serial server <-IPC-> app would work (see my HeartOfGold project for details_

Printer

Looking at the Java Printing API. Only problem is you need something printable - which looks like it might be images. We'll really only need to print receipts and return notices - but the printer is also specialized. Going to need some sort of test on this, which will be rather hard since we don't have any spares.

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