oot-e ntsc

oot-1.0-j
uses OS_VI_NTSC_LAN1 (2)
0x800063C0: osViModeNtscLan1

oot-1.0-e
uses OS_VI_FPAL_LAN1 (44)
0x80006950: osViModeNtscLan1
0x80006A00: osViModeFpalLan1
0x800082F0: current mode?
0x8000063C: set mode?

oot-1.0-e to ntsc hack:
  ; change mode from OS_VI_FPAL_LAN1 to OS_VI_NTSC_LAN1
  w.[0x800006AC] (rom 0x000012AC) := 0x27396950 ; addiu $t9, $t9, 0x6950
  ; prevent changes to yScale
  w.[0x800055F0] (rom 0x000061F0) := 0x00000000 ; nop
  w.[0x8000560C] (rom 0x0000620C) := 0x00000000 ; nop