The preliminary winner of the REAL OS contest is Rahsennor.

Congrats, your prize will be issued later after the judges have completed their investigation and ensured that everything is proper.

The competition rules enforcement officer hopes that the final remaining entry will also not have to be disqualified for some sort of technical reason.

I have excluded all INT's below 32 for two reasons. 1) to avoid confusion with the standard BIOS function calls. and 2) to meet the original Intel spec of the reserved interrupt space being 0-31. If you want to use hardware interrupts in your OS, then, to meet the rules, you will have to move the PIC base to at least 32 (higher if you want, but not lower).

    mov     si,reloc
    mov     di,$510
     mov     cx,20
       rep     movsw
       lea     si,[di-8]       ; expand idt
        mov     cx,32
       rep     movsw
       mov     word[di-8],time ; set PIC IRQ
pmode:     cli
 in      al,$92          ; A20 enable
        or      al,2
        out     $92,al
      mov     al,$FE          ; PIC: mask all except PIT
      out     $21,al
      mov     al,$34          ; PIT: ch. 0, lo/hi, rate
       out     $43,al
      mov     al,$A9          ; low byte
  out     $40,al
      mov     al,$04          ; high byte
 out     $40,al    

Okay, since you two are the only entrants I will ask you what you want to do.

1) Do you want to restart the voting with the current entries and just ignore the "int's lower than 32" restriction? This way your entries are not wasted.

2) Do you want to me to give you both something like 1 day extra to fix the entries and then start voting again? Note: That substantial modification would probably not be allowed, only enough of a change to get the entry compliant would be accepted.

3) Do you want to do something else (like maybe abandon the contest)?

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