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82 lines
3.6 KiB
Plaintext
82 lines
3.6 KiB
Plaintext
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*********************
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* TIA Documentation *
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*********************
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--------------------------------------
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TIA Addressing Notes for the Atari VCS
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--------------------------------------
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A12 is connected to /CS0 (Chip Select 0 - active low)
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A7 is connected to /CS3 (Chip Select 3 - active low)
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A[11:8] and A6 are not connected to the TIA
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VCC is connected to CS1 (Chip Select 1 - active high)
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GND is connected to /CS2 (Chip Select 2 - active low)
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--------------------------------------------
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$0000 - $003F = TIA.......(write)......(read)
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--------------------------------------------
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$0000 = TIA Address $00 - (VSYNC)......(CXM0P)
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$0001 = TIA Address $01 - (VBLANK).....(CXM1P)
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$0002 = TIA Address $02 - (WSYNC)......(CXP0FB)
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$0003 = TIA Address $03 - (RSYNC)......(CXP1FB)
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$0004 = TIA Address $04 - (NUSIZ0).....(CXM0FB)
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$0005 = TIA Address $05 - (NUSIZ1).....(CXM1FB)
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$0006 = TIA Address $06 - (COLUP0).....(CXBLPF)
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$0007 = TIA Address $07 - (COLUP1).....(CXPPMM)
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$0008 = TIA Address $08 - (COLUPF).....(INPT0)
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$0009 = TIA Address $09 - (COLUBK).....(INPT1)
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$000A = TIA Address $0A - (CTRLPF).....(INPT2)
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$000B = TIA Address $0B - (REFP0)......(INPT3)
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$000C = TIA Address $0C - (REFP1)......(INPT4)
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$000D = TIA Address $0D - (PF0)........(INPT5)
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$000E = TIA Address $0E - (PF1)........(UNDEFINED)
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$000F = TIA Address $0F - (PF2)........(UNDEFINED)
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$0010 = TIA Address $10 - (RESP0)......(CXM0P)
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$0011 = TIA Address $11 - (RESP1)......(CXM1P)
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$0012 = TIA Address $12 - (RESM0)......(CXP0FB)
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$0013 = TIA Address $13 - (RESM1)......(CXP1FB)
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$0014 = TIA Address $14 - (RESBL)......(CXM0FB)
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$0015 = TIA Address $15 - (AUDC0)......(CXM1FB)
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$0016 = TIA Address $16 - (AUDC1)......(CXBLPF)
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$0017 = TIA Address $17 - (AUDF0)......(CXPPMM)
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$0018 = TIA Address $18 - (AUDF1)......(INPT0)
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$0019 = TIA Address $19 - (AUDV0)......(INPT1)
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$001A = TIA Address $1A - (AUDV1)......(INPT2)
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$001B = TIA Address $1B - (GRP0).......(INPT3)
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$001C = TIA Address $1C - (GRP1).......(INPT4)
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$001D = TIA Address $1D - (ENAM0)......(INPT5)
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$001E = TIA Address $1E - (ENAM1)......(UNDEFINED)
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$001F = TIA Address $1F - (ENABL)......(UNDEFINED)
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$0020 = TIA Address $20 - (HMP0).......(CXM0P)
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$0021 = TIA Address $21 - (HMP1).......(CXM1P)
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$0022 = TIA Address $22 - (HMM0).......(CXP0FB)
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$0023 = TIA Address $23 - (HMM1).......(CXP1FB)
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$0024 = TIA Address $24 - (HMBL).......(CXM0FB)
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$0025 = TIA Address $25 - (VDELP0).....(CXM1FB)
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$0026 = TIA Address $26 - (VDELP1).....(CXBLPF)
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$0027 = TIA Address $27 - (VDELBL).....(CXPPMM)
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$0028 = TIA Address $28 - (RESMP0).....(INPT0)
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$0029 = TIA Address $29 - (RESMP1).....(INPT1)
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$002A = TIA Address $2A - (HMOVE)......(INPT2)
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$002B = TIA Address $2B - (HMCLR)......(INPT3)
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$002C = TIA Address $2C - (CXCLR)......(INPT4)
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$002D = TIA Address $2D - (UNDEFINED)..(INPT5)
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$002E = TIA Address $2E - (UNDEFINED)..(UNDEFINED)
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$002F = TIA Address $2F - (UNDEFINED)..(UNDEFINED)
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$0030 = TIA Address $30 - (UNDEFINED)..(CXM0P)
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$0031 = TIA Address $31 - (UNDEFINED)..(CXM1P)
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$0032 = TIA Address $32 - (UNDEFINED)..(CXP0FB)
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$0033 = TIA Address $33 - (UNDEFINED)..(CXP1FB)
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$0034 = TIA Address $34 - (UNDEFINED)..(CXM0FB)
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$0035 = TIA Address $35 - (UNDEFINED)..(CXM1FB)
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$0036 = TIA Address $36 - (UNDEFINED)..(CXBLPF)
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$0037 = TIA Address $37 - (UNDEFINED)..(CXPPMM)
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$0038 = TIA Address $38 - (UNDEFINED)..(INPT0)
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$0039 = TIA Address $39 - (UNDEFINED)..(INPT1)
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$003A = TIA Address $3A - (UNDEFINED)..(INPT2)
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$003B = TIA Address $3B - (UNDEFINED)..(INPT3)
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$003C = TIA Address $3C - (UNDEFINED)..(INPT4)
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$003D = TIA Address $3D - (UNDEFINED)..(INPT5)
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$003E = TIA Address $3E - (UNDEFINED)..(UNDEFINED)
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$003F = TIA Address $3F - (UNDEFINED)..(UNDEFINED)
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