You can't call sii_DumpLog if  DIAGNOSTIC is not defined (i.e.,
there's no `` option DIAGNOSTIC'' in the config file), because
the definition sii_DumpLog() is bracketed by #ifdef DIAGNOSTIC/#endif.
The current source attempts to call sii_DumpLog() regardless.
The following patch fixes that.

*** ./src/sys/arc/pmax/dev/sii.c	Mon Nov 21 14:40:34 1994
--- /src/NetBSD/src/sys.JONATHAN/arch/pmax/dev/sii.c	Mon Sep 19 18:40:37 1994
***************
*** 742,748 ****
--- 741,749 ----
  				sc->sc_target = regs->destat;
  				state->prevComm = 0;
  			} else {
+ #ifdef DEBUG
  				sii_DumpLog();
+ #endif
  				panic("sc_target 2");
  			}
  		}
***************
*** 1530,1536 ****
--- 1531,1539 ----
  	}
  	if (dstat & SII_DNE) { /* XXX */
  		printf("sii_GetByte: DNE set 5\n");
+ #ifdef DEBUG
  		sii_DumpLog();
+ #endif
  		regs->dstat = SII_DNE;
  	}
  	data = regs->data;
***************
*** 1686,1692 ****
--- 1689,1697 ----
  	if (regs->dstat & SII_DNE) { /* XXX */
  		regs->dstat = SII_DNE;
  		printf("sii_StartDMA: DNE set\n");
+ #ifdef DEBUG
  		sii_DumpLog();
+ #endif
  	}
  	regs->dmaddrl = ((u_long)dmaAddr >> 1);
  	regs->dmaddrh = ((u_long)dmaAddr >> 17) & 03;