Since the pipboy doesnt generate OnHolotapePlay and since OnEquip is only generated after the holotape has been closed,
I think the flash program would have to show some introductory note on the screen, prompting the user to hit a key
so that the flash program can then notify the BIOS.psc that the "terminal" is initializing
right now the problem is, registering for onTerminalReady is done in OnHolotapePlay
so, no holotape play, the BIOS never gets the ready event
so we would have to emulate the onholotapeplay event on pipboy
by calling a function on the BIOS.psc from flash as soon as the player confirms the introductory note
(sendexternalevent doesnt work cause we can't register for that)
the called function would in essence do the same as the OnHolotapePlay event
https://forums.nexusmods.com/index.php?/topic/9022363-script-event-for-holotapes/page-2