To do list (not in any particular order). o Improve pmap_zero_page and pmap_copy_page. Speed and flushing. o Move the RO and WIRED attribute from the pte to the pv table. This saves four instructions in the tlb miss handler. InWork: Have a test version. The system hangs after a while. Not solved yet. Also, is it worth the effort to remove 4 instr. in TLB-miss handler? o Boot. Standalone boot program instead of booting the kernel directly? o sigsetjmp/siglongjmp missing.... o Add more videomodes to pccons driver. 50kHz and 64kHz monitors? InWork: This seems to be hard. Need more info on the chip. o Find out why bitmap load to S3-928 flashes screen. Know why (enable linear mode). Need S3 info. o Can we have 32 double registers? Lots of other things.....