;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; 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) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; THIS IS AN IO PORT DO NOT TOUCH IT! DDR0 = $00 PORT1 = $01 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; VIC-II (Video): 47 registers ($D000 to $D02E) ; Sprite X/Y Coordinates SPXS = $d000 SPYS = $d001 SP0X = $d000 SP0Y = $d001 SP1X = $d002 SP1Y = $d003 SP2X = $d004 SP2Y = $d005 SP3X = $d006 SP3Y = $d007 SP4X = $d008 SP4Y = $d009 SP5X = $d00a SP5Y = $d00b SP6X = $d00c SP6Y = $d00d SP7X = $d00e SP7Y = $d00f ; Sprite Control & Features SPMSB = $d010 ; Most Significant Bits for Sprite X Coordinates SPON = $d015 ; Sprite Enable Register SP_YEXP = $d017 ; Sprite Double Height (Y Expansion) SP_PRIO = $d01b ; Sprite to Background Priority SP_MULTI = $d01c ; Sprite Multicolor Mode Select SP_XEXP = $d01d ; Sprite Double Width (X Expansion) ; Control & Status Registers VIC_CTL1 = $d011 ; Control Register 1 (Raster MSB, Screen Height, ECM, BMM, DEN) RASTER_LINE = $d012 ; Current Raster Line (Read) / Target Raster Line (Write) LIGHT_PEN_X = $d013 ; Light Pen X Position LIGHT_PEN_Y = $d014 ; Light Pen Y Position VIC_CTL2 = $d016 ; Control Register 2 (Res, Screen Width, MCM, CSEL) VIC_CONFIG = $d018 ; VIC-II Memory Matrix Controller (Video Matrix / Char Base) VIC_INT_FLG = $d019 ; Interrupt Flag Register VIC_INT_MSK = $d01a ; Interrupt Mask Register (Enable/Disable VIC Interrupts) ; Collision Registers (Reading clears them) COLL_SP_SP = $d01e ; Sprite-to-Sprite Collision Status COLL_SP_BG = $d01f ; Sprite-to-Background Collision Status ; System Colors BORDER_COL = $d020 ; Border Color GLOBALBG_COL = $d021 ; Background Color 0 (Standard Background) BG_COL1 = $d022 ; Background Color 1 (Multicolor / Extended Color Text) BG_COL2 = $d023 ; Background Color 2 (Multicolor / Extended Color Text) BG_COL3 = $d024 ; Background Color 3 (Extended Color Text) ; Extra Sprite Colors (Shared across all multicolor sprites) SP_MCOL0 = $d025 ; Sprite Multicolor 0 SP_MCOL1 = $d026 ; Sprite Multicolor 1 ; Individual Sprite Colors (Standard / Foreground colors) SPCS = $d027 SP0C = $d027 SP1C = $d028 SP2C = $d029 SP3C = $d02a SP4C = $d02b SP5C = $d02c SP6C = $d02d SP7C = $d02e ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; SID (Audio): 29 registers ($D400 to $D41C) ; (skip) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; CIA 1 (I/O, IRQ): 16 registers ($DC00 to $DC0F) CIA1_PORTA = $dc00 ; Data Port A: Joystick 2 / Keyboard columns CIA1_PORTB = $dc01 ; Data Port B: Joystick 1 / Keyboard rows CIA1_DDRA = $dc02 ; Data Direction Register A CIA1_DDRB = $dc03 ; Data Direction Register B ; Real-Time Clock (RTC) CIA1_TOD_10TH = $dc08 ; Time of Day: Tenths of a Second CIA1_TOD_SEC = $dc09 ; Time of Day: Seconds CIA1_TOD_MIN = $dc0a ; Time of Day: Minutes CIA1_TOD_HR = $dc0b ; Time of Day: Hours ; Serial I/O & Interrupt Control CIA1_SDR = $dc0c ; Serial Data Register (Shift Register) CIA1_ICR = $dc0d ; Interrupt Control Register (Read: Flags / Write: Mask) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; CIA 2 (I/O, NMI): 16 registers ($DD00 to $DD0F) VIC_SELBANK = $dd00 ; CIA 2 Port A (VIC Bank Select) CIA2_PORTB = $dd01 ; Data Port B: User Port CIA2_DDRA = $dd02 ; CIA 2 Data Direction Register A CIA2_DDRB = $dd03 ; CIA 2 Data Direction Register B ; Real-Time Clock (RTC) CIA2_TOD_10TH = $dd08 ; Time of Day: Tenths of a Second CIA2_TOD_SEC = $dd09 ; Time of Day: Seconds CIA2_TOD_MIN = $dd0a ; Time of Day: Minutes CIA2_TOD_HR = $dd0b ; Time of Day: Hours ; Serial I/O & Interrupt Control CIA2_SDR = $dd0c ; Serial Data Register (Shift Register) CIA2_ICR = $dd0d ; Interrupt Control Register (Read: Flags / Write: Mask) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; Timers ; CIA 1 Timers (System IRQ / Keyboard / Joysticks) CIA1_TA = $dc04 ; Timer A Low Byte CIA1_TA_HI = $dc05 ; Timer A High Byte CIA1_TB = $dc06 ; Timer B Low Byte CIA1_TB_HI = $dc07 ; Timer B High Byte CIA1_CRA = $dc0e ; Control Register Timer A CIA1_CRB = $dc0f ; Control Register Timer B ; CIA 2 Timers (NMI / RS-232 / User Port) CIA2_TA = $dd04 ; Timer A Low Byte CIA2_TA_HI = $dd05 ; Timer A High Byte CIA2_TB = $dd06 ; Timer B Low Byte CIA2_TB_HI = $dd07 ; Timer B High Byte CIA2_CRA = $dd0e ; Control Register Timer A CIA2_CRB = $dd0f ; Control Register Timer B ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; CPU & Video System Registers (Outside standard I/O blocks) ; 6510 On-Chip Processor Port (Memory Banking / Tape) CPU_DDR0 = $0000 ; Processor Data Direction Register CPU_PORT0 = $0001 ; Processor Port (Bits 0-2 control RAM/ROM configuration) ; Hardware Color RAM Base CORAM = $d800 ; Color Matrix Base (1024 nibbles, lower 4 bits active) ; Kernal Software Configuration Registers (Zero-Page / Status) TEXT_COL = $0286 ; Current Foreground Text Color SCR_HI = $0288 ; High Byte of Current Text Screen RAM ($04 = $0400) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; KERNAL OS Vectors & System Management ($0300 to $03FF) ; Core Hardware Interrupt Handlers VEC_SYSTEM_IRQ = $0314 ; Hardware IRQ Interrupt Vector (Default: $EA31) VEC_SYSTEM_BRK = $0316 ; BRK Instruction Execution Vector (Default: $FE66) VEC_SYSTEM_NMI = $0318 ; Non-Maskable Interrupt (NMI) Vector (Default: $FE47) ; Core Operating System Jumps VEC_OPEN_FILE = $031a ; Kernal OPEN File Vector VEC_CLOSE_FILE = $031c ; Kernal CLOSE File Vector VEC_CHKIN_STREAM = $031e ; Kernal CHKIN (Set Input Stream) Vector VEC_CKOUT_STREAM = $0320 ; Kernal CKOUT (Set Output Stream) Vector VEC_CLRCH_STREAM = $0322 ; Kernal CLRCH (Clear Channels) Vector VEC_BASIN_STREAM = $0324 ; Kernal CHRIN/BASIN (Read Character) Vector VEC_BSOUT_STREAM = $0326 ; Kernal CHROUT/BSOUT (Write Character) Vector VEC_STOP_KEY = $0328 ; Kernal STOP Key Indicator Scan Vector VEC_GETIN_STREAM = $032a ; Kernal GETIN (Get Character from Queue) Vector VEC_CLALL_STREAM = $032c ; Kernal CLALL (Close All Files) Vector ; User Direct Hook Vectors VEC_USR_FUNC = $0310 ; BASIC USR Function Hook Vector VEC_LOAD_DATA = $0330 ; Kernal LOAD Routine Vector VEC_SAVE_DATA = $0332 ; Kernal SAVE Routine Vector ; Safe Memory Workspace Buffer MEM_CASSETTE_BUF = $033c ; 192-Byte Safe Storage Area ($033C to $03FB)