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constants for rSTAT register

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xCrystal
2023-08-27 16:27:11 +02:00
parent 4dec74b770
commit 4ee4655e72
5 changed files with 17 additions and 6 deletions
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11
constants/hardware_constants.asm
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@@ -131,6 +131,17 @@ DEF rLCDC_WINDOW_TILEMAP EQU 6 ; 0=9800-9BFF, 1=9C00-9FFF
DEF rLCDC_ENABLE EQU 7 ; 0=Off, 1=On
DEF LCDC_DEFAULT EQU (1 << rLCDC_ENABLE) | (1 << rLCDC_WINDOW_TILEMAP) | (1 << rLCDC_WINDOW_ENABLE) | (1 << rLCDC_SPRITES_ENABLE) | (1 << rLCDC_BG_PRIORITY)
DEF rSTAT EQU $ff41 ; LCDC Status (R/W)
DEF rSTAT_STATUS_FLAGS EQU %00000011 ; LCD controller status (Read Only)
DEF rSTAT_HBLANK_MASK EQU %00000000 ; In H-Blank (Read Only)
DEF rSTAT_VBLANK_MASK EQU %00000001 ; In V-Blank (Read Only)
DEF rSTAT_OAM_MASK EQU %00000010 ; OAM is used by system (Read Only)
DEF rSTAT_LCD_MASK EQU %00000011 ; Both OAM and VRAM used by system (Read Only)
DEF rSTAT_BUSY EQU 1 ; When set, VRAM access is unsafe (Read Only)
DEF rSTAT_LYC EQU 2 ; LYC=LY (0=Different, 1=Equal) (Read Only)
DEF rSTAT_INT_HBLANK EQU 3 ; Mode 00: H-Blank (Selectable)
DEF rSTAT_INT_VBLANK EQU 4 ; Mode 01: V-Blank (Selectable)
DEF rSTAT_INT_OAM EQU 5 ; Mode 02: OAM (Selectable)
DEF rSTAT_INT_LYC EQU 6 ; LYC=LY Coincidence (Selectable)
DEF rSCY EQU $ff42 ; Scroll Y (R/W)
DEF rSCX EQU $ff43 ; Scroll X (R/W)
DEF rLY EQU $ff44 ; LCDC Y-Coordinate (R)