constants.asm

#importonce

//
// All of the constants referenced in the rest of the library
//

// Enable/Disable flags
.label ENABLE  = $80
.label DISABLE = $00
.label TRUE    = ENABLE
.label FALSE   = DISABLE

// Timer constants
.label TIMER_SINGLE         = $00
.label TIMER_CONTINUOUS     = $01
.label TIMER_HALF_SECOND    = $1e
.label TIMER_ONE_SECOND     = $3c
.label TIMER_TWO_SECONDS    = $78
.label TIMER_THREE_SECONDS  = $b4
.label TIMER_FOUR_SECONDS   = $f0
.label TIMER_STRUCT_BYTES   = $40

// The bank the VIC-II chip will be in
.label BANK = $00

// The start of physical RAM the VIC-II will see
.label VIC_START = (BANK * $4000)

// Offsets for start of VIC memory for each sprite attribute
.label SPR_VISIBLE  = vic.SPENA   - vic.SP0X
.label SPR_X_EXPAND = vic.XXPAND  - vic.SP0X
.label SPR_Y_EXPAND = vic.YXPAND  - vic.SP0X
.label SPR_HMC      = vic.SPMC    - vic.SP0X
.label SPR_PRIORITY = vic.SPBGPR  - vic.SP0X

// Flags for various sprite settings
.label SPR_HIDE       = DISABLE
.label SPR_SHOW       = ENABLE
.label SPR_NORMAL     = DISABLE
.label SPR_EXPAND     = ENABLE
.label SPR_FG         = DISABLE
.label SPR_BG         = ENABLE
.label SPR_HIRES      = DISABLE
.label SPR_MULTICOLOR = ENABLE

// Joystick constants
.label JOY_BUTTON = %00010000
.label JOY_UP     = %00000001
.label JOY_DOWN   = %00000010
.label JOY_LEFT   = %00000100
.label JOY_RIGHT  = %00001000