Commodore Amiga A2000 - Page 292

NAME ADD R/W CHIP FUNCTION
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BLTDDAT & *000 ER A Blitter destination early read (dummy address)
DMACONR *002 R A P DMA control (and blitter status) read
VPOSR *004 R A Read vert most signif. bit (and frame flop)
VHPOSR *006 R A Read vert and horiz. position of beam
DSKDATR & *008 ER P Disk data early read (dummy address)
JOY0DAT *00A R D Joystick-mouse 0 data (vert,horiz)
JOY1DAT *00C R D Joystick-mouse 1 data (vert,horiz)
CLXDAT *00E R D Collision data register (read and clear)
ADKCONR *010 R P Audio, disk control register read
POT0DAT *012 R P Pot counter pair 0 data (vert,horiz)
POT1DAT *014 R P Pot counter pair 1 data (vert,horiz)
POTGOR *016 R P Pot port data read (formerly POTINP)
SERDATR *018 R P Serial port data and status read
DSKBYTR *01A R P Disk data byte and status read
INTENAR *01C R P Interrupt enable bits read
INTREQR *01E R P Interrupt request bits read
DSKPTH + *020 W A Disk pointer (high 3 bits)
DSKPTL + *022 W A Disk pointer (low 15 bits)
DSKLEN *024 W P Disk length
DSKDAT & *026 W P Disk DMA data write
REFPTR & *028 W A Refresh pointer
VPOSW *02A W A Write vert most signif. bit (and frame flop)
VHPOSW *02C W A Write vert and horiz position of beam
COPCON *02E W A Coprocessor control register (CDANG)
SERDAT *030 W P Serial port data and stop bits write
SERPER *032 W P Serial port period and control
POTGO *034 W P Pot port data write and start
JOYTEST *036 W D Write to all 4 joystick-mouse counters at once
STREQU & *038 S D Strobe for horiz sync with VB and EQU
STRVBL & *03A S D Strobe for horiz sync with VB (vert. blank)
STRHOR & *03C S D P Strobe for horiz sync
STRLONG & *03E S D Strobe for identification of long horiz. line.
BLTCON0 -040 W A Blitter control register 0
BLTCON1 -042 W A Blitter control register 1
BLTAFWM -044 W A Blitter first word mask for source A
BLTALWM -046 W A Blitter last word mask for source A
BLTCPTH + -048 W A Blitter pointer to source C (high 3 bits)
BLTCPTL + -04A W A Blitter pointer to source C (low 15 bits)
BLTBPTH + -04C W A Blitter pointer to source B (high 3 bits)
BLTBPTL + -04E W A Blitter pointer to source B (low 15 bits)
BLTAPTH + -050 W A Blitter pointer to source A (high 3 bits)
BLTAPTL + -052 W A Blitter pointer to source A (low 15 bits)
BLTDPTH + -054 W A Blitter pointer to destination D (high 3 bits)
BLTDPTL + -056 W A Blitter pointer to destination D (low 15 bits)
BLTSIZE -058 W A Blitter start and size (window width, height)
-05A
-05C
-05E
BLTCMOD -060 W A Blitter modulo for source C
BLTBMOD -062 W A Blitter modulo for source B
BLTAMOD -064 W A Blitter modulo for source A
BLTDMOD -066 W A Blitter modulo for destination D
-068
-06A
-06C
-06E
BLTCDAT % -070 W A Blitter source C data register
BLTBDAT % -072 W A Blitter source B data register
BLTADAT % -074 W A Blitter source A data register