-- TIA write only VSYNC = 0x00 -- ......1. vertical sync set-clear VBLANK = 0x01 -- 11....1. vertical blank set-clear WSYNC = 0x02 -- wait for leading edge of horizontal blank RSYNC = 0x03 -- reset horizontal sync counter NUSIZ0 = 0x04 -- ..111111 number-size player-missile 0 NUSIZ1 = 0x05 -- ..111111 number-size player-missile 1 COLUP0 = 0x06 -- 1111111. color-lum player 0 and missile 0 COLUP1 = 0x07 -- 1111111. color-lum player 1 and missile 1 COLUPF = 0x08 -- 1111111. color-lum playfield and ball COLUBK = 0x09 -- 1111111. color-lum background CTRLPF = 0x0a -- ..11.111 control playfield ball size & collisions REFP0 = 0x0b -- ....1... reflect player 0 REFP1 = 0x0c -- ....1... reflect player 1 PF0 = 0x0d -- 1111.... playfield register byte 0 PF1 = 0x0e -- 11111111 playfield register byte 1 PF2 = 0x0f -- 11111111 playfield register byte 2 RESP0 = 0x10 -- reset player 0 RESP1 = 0x11 -- reset player 1 RESM0 = 0x12 -- reset missile 0 RESM1 = 0x13 -- reset missile 1 RESBL = 0x14 -- reset ball AUDC0 = 0x15 -- ....1111 audio control 0 AUDC1 = 0x16 -- ....1111 audio control 1 AUDF0 = 0x17 -- ...11111 audio frequency 0 AUDF1 = 0x18 -- ...11111 audio frequency 1 AUDV0 = 0x19 -- ....1111 audio volume 0 AUDV1 = 0x1a -- ....1111 audio volume 1 GRP0 = 0x1b -- 11111111 graphics player 0 GRP1 = 0x1c -- 11111111 graphics player 1 ENAM0 = 0x1d -- ......1. graphics (enable) missile 0 ENAM1 = 0x1e -- ......1. graphics (enable) missile 1 ENABL = 0x1f -- ......1. graphics (enable) ball HMP0 = 0x20 -- 1111.... horizontal motion player 0 HMP1 = 0x21 -- 1111.... horizontal motion player 1 HMM0 = 0x22 -- 1111.... horizontal motion missile 0 HMM1 = 0x23 -- 1111.... horizontal motion missile 1 HMBL = 0x24 -- 1111.... horizontal motion ball VDELP0 = 0x25 -- .......1 vertical delay player 0 VDELP1 = 0x26 -- .......1 vertical delay player 1 VDELBL = 0x27 -- .......1 vertical delay ball RESMP0 = 0x28 -- ......1. reset missile 0 to player 0 RESMP1 = 0x29 -- ......1. reset missile 1 to player 1 HMOVE = 0x2a -- apply horizontal motion HMCLR = 0x2b -- clear horizontal motion registers CXCLR = 0x2c -- clear collision latches= 0x20 -- TIA read only CXM0P = 0x30 -- 11...... read collision M0-P1, M0-P0 (Bit 7 --6) CXM1P = 0x31 -- 11...... read collision M1-P0, M1-P1 CXP0FB = 0x32 -- 11...... read collision P0-PF, P0-BL CXP1FB = 0x33 -- 11...... read collision P1-PF, P1-BL CXM0FB = 0x34 -- 11...... read collision M0-PF, M0-BL CXM1FB = 0x35 -- 11...... read collision M1-PF, M1-BL CXBLPF = 0x36 -- 1....... read collision BL-PF, unused CXPPMM = 0x37 -- 11...... read collision P0-P1, M0-M1 INPT0 = 0x38 -- 1....... read pot port INPT1 = 0x39 -- 1....... read pot port INPT2 = 0x3a -- 1....... read pot port INPT3 = 0x3b -- 1....... read pot port INPT4 = 0x3c -- 1....... read input INPT5 = 0x3d -- 1....... read input -- PIA SWCHA = 0x280 -- 11111111 Port A= 0x280 -- input or output (read or write) SWACNT = 0x281 -- 11111111 Port A DDR, 0= input, 1=output SWCHB = 0x282 -- 11111111 Port B= 0x280 -- console switches (read only) SWBCNT = 0x283 -- 11111111 Port B DDR (hardwired as input) INTIM = 0x284 -- 11111111 Timer output (read only) INSTAT = 0x285 -- 11...... Timer Status (read only, undocumented) TIM1T = 0x294 -- 11111111 set 1 clock interval (838 nsec/interval) TIM8T = 0x295 -- 11111111 set 8 clock interval (6.7 usec/interval) TIM64T = 0x296 -- 11111111 set 64 clock interval (53.6 usec/interval) T1024T = 0x297 -- 11111111 set 1024 clock interval (858.2 usec/interval)