Finally getting into looking into the old code... It's not as bad as I remember, but it is pretty dense. Doing a bit of cleanup, etc. (which also serves as a good memory-refresher) before getting into the nitty-gritty of trying to get the one-shots working (even in bypass mode).

When working with SDRAM read/write procedures:

Don't Forget That SDRAM RETAINS ITS DATA for NEARLY A MINUTE (or more?) even when powered-down.

So, when doing a test of a new write-procedure, power that thing down for a minute after each successful test.