IncHLMem1

IncHLMem1:
;                   speed    1 page         total
;
     inc l         ;    4    4*16384        65536
     ret nz        ;11| 5    64*5+16320*11  179840
     inc h         ;    4    4*64           256
     ret po        ;11| 5    11*63+5        698
     ld h,40h      ;    7    7              7
     in a,(6)      ;   11    11             11
     inc a         ;    4    4              4
     out (6),a     ;   11    11             11
     ret           ;   10    10             10
;averages just over 15 cycles