Looks like you put constants to .. RAM:
org $00d0
pulse_cnt dc.w $3e7f,$1f3f,$14d5,$0f9f,$0c80,$0a6a,$08ed,$07cf,$06f1,$0640
dc.w $042a,$0320,$0280,$0215,$01c9,$0190,$0163
pulse_cnt_max dc.w $0140
Who do you think will initialize them when powered up standalone? Random values in RAM could easily produce 113Hz
Edward