;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; 64 registers total ; VIC-II (Video): 47 registers ($D000 to $D02E) ; SID (Audio): 29 registers ($D400 to $D41C) ; CIA 1 (I/O, IRQ): 16 registers ($DC00 to $DC0F) ; CIA 2 (I/O, NMI): 16 registers ($DD00 to $DD0F) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; VIC-II (Video): 47 registers ($D000 to $D02E) ; Sprite X/Y Coordinates REG_SPRITE0_X = $d000 REG_SPRITE0_Y = $d001 REG_SPRITE1_X = $d002 REG_SPRITE1_Y = $d003 REG_SPRITE2_X = $d004 REG_SPRITE2_Y = $d005 REG_SPRITE3_X = $d006 REG_SPRITE3_Y = $d007 REG_SPRITE4_X = $d008 REG_SPRITE4_Y = $d009 REG_SPRITE5_X = $d00a REG_SPRITE5_Y = $d00b REG_SPRITE6_X = $d00c REG_SPRITE6_Y = $d00d REG_SPRITE7_X = $d00e REG_SPRITE7_Y = $d00f ; Sprite Control & Features REG_SPRITE_MSB = $d010 ; Most Significant Bits for Sprite X Coordinates REG_SPRITE_ENABLE = $d015 ; Sprite Enable Register REG_SPRITE_YEXP = $d017 ; Sprite Double Height (Y Expansion) REG_SPRITE_PRIO = $d01b ; Sprite to Background Priority REG_SPRITE_MULTI = $d01c ; Sprite Multicolor Mode Select REG_SPRITE_XEXP = $d01d ; Sprite Double Width (X Expansion) ; Control & Status Registers REG_VIC_CTL1 = $d011 ; Control Register 1 (Raster MSB, Screen Height, ECM, BMM, DEN) REG_RASTER_LINE = $d012 ; Current Raster Line (Read) / Target Raster Line (Write) REG_LIGHT_PEN_X = $d013 ; Light Pen X Position REG_LIGHT_PEN_Y = $d014 ; Light Pen Y Position REG_VIC_CTL2 = $d016 ; Control Register 2 (Res, Screen Width, MCM, CSEL) REG_VIC_CONFIG = $d018 ; VIC-II Memory Matrix Controller (Video Matrix / Char Base) REG_VIC_INT_FLG = $d019 ; Interrupt Flag Register REG_VIC_INT_MSK = $d01a ; Interrupt Mask Register (Enable/Disable VIC Interrupts) ; Collision Registers (Reading clears them) REG_COLL_SP_SP = $d01e ; Sprite-to-Sprite Collision Status REG_COLL_SP_BG = $d01f ; Sprite-to-Background Collision Status ; System Colors REG_BORDER_COLOR = $d020 ; Border Color REG_GLOBALBG_COLOR = $d021 ; Background Color 0 (Standard Background) REG_BG_COLOR1 = $d022 ; Background Color 1 (Multicolor / Extended Color Text) REG_BG_COLOR2 = $d023 ; Background Color 2 (Multicolor / Extended Color Text) REG_BG_COLOR3 = $d024 ; Background Color 3 (Extended Color Text) ; Extra Sprite Colors (Shared across all multicolor sprites) REG_SPRITE_MCOL0 = $d025 ; Sprite Multicolor 0 REG_SPRITE_MCOL1 = $d026 ; Sprite Multicolor 1 ; Individual Sprite Colors (Standard / Foreground colors) REG_SPRITE0_COLOR = $d027 REG_SPRITE1_COLOR = $d028 REG_SPRITE2_COLOR = $d029 REG_SPRITE3_COLOR = $d02a REG_SPRITE4_COLOR = $d02b REG_SPRITE5_COLOR = $d02c REG_SPRITE6_COLOR = $d02d REG_SPRITE7_COLOR = $d02e ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; SID (Audio): 29 registers ($D400 to $D41C) ; (skip) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; CIA 1 (I/O, IRQ): 16 registers ($DC00 to $DC0F) REG_CIA1_PORTA = $dc00 ; Data Port A: Joystick 2 / Keyboard columns REG_CIA1_PORTB = $dc01 ; Data Port B: Joystick 1 / Keyboard rows REG_CIA1_DDRA = $dc02 ; Data Direction Register A REG_CIA1_DDRB = $dc03 ; Data Direction Register B ; Real-Time Clock (RTC) REG_CIA1_TOD_10TH = $dc08 ; Time of Day: Tenths of a Second REG_CIA1_TOD_SEC = $dc09 ; Time of Day: Seconds REG_CIA1_TOD_MIN = $dc0a ; Time of Day: Minutes REG_CIA1_TOD_HR = $dc0b ; Time of Day: Hours ; Serial I/O & Interrupt Control REG_CIA1_SDR = $dc0c ; Serial Data Register (Shift Register) REG_CIA1_ICR = $dc0d ; Interrupt Control Register (Read: Flags / Write: Mask) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; CIA 2 (I/O, NMI): 16 registers ($DD00 to $DD0F) REG_VIC_SELBANK = $dd00 ; CIA 2 Port A (VIC Bank Select) REG_CIA2_PORTB = $dd01 ; Data Port B: User Port REG_CIA2_DDRA = $dd02 ; CIA 2 Data Direction Register A REG_CIA2_DDRB = $dd03 ; CIA 2 Data Direction Register B ; Real-Time Clock (RTC) REG_CIA2_TOD_10TH = $dd08 ; Time of Day: Tenths of a Second REG_CIA2_TOD_SEC = $dd09 ; Time of Day: Seconds REG_CIA2_TOD_MIN = $dd0a ; Time of Day: Minutes REG_CIA2_TOD_HR = $dd0b ; Time of Day: Hours ; Serial I/O & Interrupt Control REG_CIA2_SDR = $dd0c ; Serial Data Register (Shift Register) REG_CIA2_ICR = $dd0d ; Interrupt Control Register (Read: Flags / Write: Mask) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; Timers ; CIA 1 Timers (System IRQ / Keyboard / Joysticks) REG_CIA1_TA = $dc04 ; Timer A Low Byte REG_CIA1_TA_HI = $dc05 ; Timer A High Byte REG_CIA1_TB = $dc06 ; Timer B Low Byte REG_CIA1_TB_HI = $dc07 ; Timer B High Byte REG_CIA1_CRA = $dc0e ; Control Register Timer A REG_CIA1_CRB = $dc0f ; Control Register Timer B ; CIA 2 Timers (NMI / RS-232 / User Port) REG_CIA2_TA = $dd04 ; Timer A Low Byte REG_CIA2_TA_HI = $dd05 ; Timer A High Byte REG_CIA2_TB = $dd06 ; Timer B Low Byte REG_CIA2_TB_HI = $dd07 ; Timer B High Byte REG_CIA2_CRA = $dd0e ; Control Register Timer A REG_CIA2_CRB = $dd0f ; Control Register Timer B ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; CPU & Video System Registers (Outside standard I/O blocks) ; 6510 On-Chip Processor Port (Memory Banking / Tape) REG_CPU_DDR0 = $0000 ; Processor Data Direction Register REG_CPU_PORT0 = $0001 ; Processor Port (Bits 0-2 control RAM/ROM configuration) ; Hardware Color RAM Base REG_COLOR_RAM = $d800 ; Color Matrix Base (1024 nibbles, lower 4 bits active) ; Kernal Software Configuration Registers (Zero-Page / Status) REG_TEXT_COLOR = $0286 ; Current Foreground Text Color REG_SCREEN_HI = $0288 ; High Byte of Current Text Screen RAM ($04 = $0400)