opl_on
opl_enter
opl_enter_pressed
opl_star
opl_f2_pressed
opl_hold

opl_blinkintervall
opl_blinkstop
opl_blinkstate
OPL_formare_linie
OPL_introd
OPL_mode
opl_dest
opl_boot
opl_boot_done

IBIS_Linie_Suffix
IBIS_Linie_Complex
IBIS_TerminusIndex
IBIS_TerminusCode

opl_matrix_nr
opl_matrix_lastchange
opl_matrix_lastchange1
opl_matrix_lastchange2
opl_matrix_lastchange3

opl_wait