User manual

F4-BMS 2.0 Technical Manual

Not all bits need further explanation but a few could use a little clarification. These clarifications

are presented here.

OBS – This item is not implemented in the game and will never be set while the game runs.

ENG_FIRE – This bit is only set if the engine is on fire. No big surprise. The lamp that

implements this in the real jet is a split face indicator with the other half reading ENGINE (which,

BTW, should be the lower half not the upper as in the default SP3 10*7 art). The ENGINE legend

in this indicator does not have it’s own bit in the shared memory. As a workaround, it is probably

safe to light this lamp when the ENGINE FAULT caution panel bit is set. It does appear that the

ENGINE and ENG FIRE lamps can come on separately under the right circumstances.

CONFIG -- This represents the stores config caution panel indicator.

HYD – If there is any problem with the hydraulics this lamp bit will be set. Note that this bit shares

a physical lamp with the OIL bit; if either bit is set the whole lamp indicator is lit top and bottom

lines (HYD/OIL and PRESS respectively).

OIL – If the RPM is less than 40% or there’s any engine fault, this lamp bit is set. Note that this bit

shares a physical lamp with the HYD bit; if either bit is set the whole lamp indicator is lit top and

bottom lines (HYD/OIL and PRESS respectively).

DUAL – The block 50/52 F-16 does not have an indicator lamp labeled with this legend (it’s a

block 25, 30/32 and older block 40/42 thing). Rather the block 50/52 has a split face indicator that

carries the legend FLCS on the top line and DBU ON on the lower line in the corresponding

position. The DUAL bit is set when there is a fire control computer fault. There appears to be no

eyebrow lamp in the block 50/52 that corresponds to this condition.

CAN – Indicates a canopy failure. However, in the current code the condition to set this lamp is

for the fire control computer to fail at the same time as the HUD. Strange but true.

FltControlSys – This lamp corresponds primarily to the FLCS FAULT caution panel lamp. It is set

when there is an FLCS fault. The block 50/52 also has an eyebrow indicator lamp space for this

fault to be displayed with an FLCS legend. This bit should probably be used to drive both the

eyebrow and caution panel lamps. NB: there is no implementation of the digital backup software

that when running would cause the other half of this eyebrow split face to light up; there’s no

corresponding databit therefore either.

LEFlaps – this bet represents the caution panel LE Flaps indicator. This bit is only ever set when

the jet experiences a complete electrical failure as currently implemented.

SEC – this bit represents the operation of the secondary engine controls which is indicated to the

pilot by illuminating the caution panel indicator with this legend. The bit is active when the RPM is

below 20% in Falcon4; this is correct for the start sequence but the in flight operation of the SEC

is not modeled in the game at present.

BUC – the logic to support this bit is implemented in the game but the bit is never actually set.

This is consistent with the dash one that indicates this bit is not operable in this block of aircraft.