[NOP] 4 cycles (T1-T4)

CLK ADDR DATA /M1 /MREQ /IOREQ /WR /RD /REFSH /BUSACK /HALT
 0   FF   FF   1   1     1      1   1   1      1       1  // reset released
 1   FF   FF   1   1     1      1   1   1      1       1  // first posedge CLK since release of /RESET
 0   FF   FF   1   1     1      1   1   1      1       1
 1   FF   FF   1   1     1      1   1   1      1       1  // second posedge CLK since release of /RESET
 0   FF   FF   1   1     1      1   1   1      1       1

 1   00   FF   0   1     1      1   1   1      1       1  // T1 fetch OP-CODE (NOP)
 0   00   00   0   0     1      1   0   1      1       1
 1   00   00   0   0     1      1   0   1      1       1  // T2
 0   00   00   0   0     1      1   0   1      1       1

 1   00   FF   1   1     1      1   1   0      1       1  // T3 refresh cycle
 0   00   FF   1   0     1      1   1   0      1       1
 1   00   FF   1   0     1      1   1   0      1       1  // T4
 0   00   FF   1   1     1      1   1   0      1       1

(fetch next OP-CODE)
 1   01   FF   0   1     1      1   1   1      1       1
 0   01   F3   0   0     1      1   0   1      1       1
 1   01   F3   0   0     1      1   0   1      1       1
 0   01   F3   0   0     1      1   0   1      1       1