Thanks, I guess will try doomattack and I will try asking Jens about the graffiti.library
The curious thing about ADOOM on my system is that shrinking the display window doesn't seem to speed it up much, so c2p must not be using that large a portion of CPU time. DOOM runs better on my 386DX with 32KB of external cache so I guess memory latency must weigh heavily. I wonder why Amiga CPU cards never had L2 cache.