CPU_Runtime.i

INIDISP shadow variable (byte)

SFX_inidisp is a shadow for the PPU INIDISP register at $2100.  Writes to SFX_inidisp will be written to $2100 at the next vertical blanking interval.

Example

;Turn on screen
lda          #inidisp(ON, DISP_BRIGHTNESS_MAX)
sta          SFX_inidisp
VBL_on

NMITIMEN shadow variable (byte)

Shadow variable for the NMITIMEN register at $4200.  Used by the various interrupt control macros to enable suspension and enabling of interrupts.

Frame ticker (word)

16 bit variable that is incremented by 1 during every vertical blanking interval.

Joypad continous read-out (word)

If enabled with SFX_JOY, libSFX performs automatic joypad read-out and sets the 12 most significant bits in these variables to 1 continously as the corresponding joypad button is pushed.

Depending on how many joypads are enabled for automatic read-out in libSFX.cfg, SFX_joy1cont to SFX_joy4cont are available.

Description

Bit       Button
15        B
14        Y
13        Select
12        Start
11        Up
10        Down
09        Left
08        Right
07        A
06        X
05        L
04        R

Joypad trigger read-out (word)

As opposed to SFX_joy#cont, the bits in SFX_joy#trig are only set for one frame as a joypad button is pushed.