AFAIR ral* was merget into -current several weeks ago and from my experience 
works just fine. There's code, man page etc but looks like it wasn't added 
into GENERIC:

---cut---
# ident GENERIC 
GENERIC:
     $NetBSD: GENERIC,v 1.692 2005/07/31 04:04:32 yamt Exp $
     $Revision: 1.692 $

# grep ral GENERIC 
# These options enable verbose messages for several subsystems.
#lpt*           at acpi?                # Parallel port
# parallel port
# The above "com*" comments apply, cf. "lpt0" under "ISA parallel
#lpt*           at pnpbios? index ?     # parallel ports
# Parallel Printer Interfaces
# PCI parallel printer interfaces
# ISA parallel printer interfaces
lpt0    at isa? port 0x378 irq 7        # standard PC parallel ports
---cut---

Is there are plans to add it? At least in some form, maybe commented, so 
people know that NetBSD actually has ral* driver..

// wbr