Atari Hardware Description V1.2
Done by Joerg Hohwiller/Beweise of DNS
Most information for this document are from ST intern, Hardware-Text by Dan
Hollis and of course FalconDoku from Chis/Aura. But I wanted to have all
information in one short&compact list. So this is not a full dokumentation.
If you find mistakes or have more information please update or write me.
I hope you like it... (Key is below)
===========#==#=======#===============================================#=====
----------------------|Exeption Vectors |-----
===========#==#=======#===============================================#=====
$00000000.L|R-|XPT_SPR|SSP after Reset |
$00000004.L|R-|XPT_PCR|PC after Reset |
$00000008.L|RW|XPT_BUS|Bus Error |
$0000000C.L|RW|XPT_ADR|Address Error |
$00000010.L|RW|XPT_ILL|Illegal Instruction |
$00000014.L|RW|XPT_DBZ|Devide by Zero |
$00000018.L|RW|XPT_CHK|Chk, Chk2 Instruction |
$0000001C.L|RW|XPT_TRV|Trapv Instruction |
$00000020.L|RW|XPT_PRV|Privilege Violation |
$00000024.L|RW|XPT_TRC|Trace |
$00000028.L|RW|XPT_LNA|Linea |
$0000002C.L|RW|XPT_LNF|Linef |
$00000030.L|RW| - |reserved |
$00000034.L|RW|XPT_FPU|Coprocessor Protocol Violation |030+
$00000038.L|RW|XPT_FRM|Format Error |010+
$0000003C.L|RW|XPT_DSP|DSP Transfer Interrupt |*
$00000040.L|RW| - |reserved |
$00000044.L|RW| - |reserved |
$00000048.L|RW| - |reserved |
$0000004C.L|RW| - |reserved |
$00000050.L|RW| - |reserved |
$00000054.L|RW| - |reserved |
$00000058.L|RW| - |reserved |
$0000005C.L|RW| - |reserved |
$00000060.L|RW|XPT_SPU|Spurious Interrupt |
$00000064.L|RW|XPT_LV1|Level 1 - |
$00000068.L|RW|XPT_HBL|Level 2 - HBL |
$0000006C.L|RW|XPT_LV3|Level 3 - |
$00000070.L|RW|XPT_VBL|Level 4 - VBL |
$00000074.L|RW|XPT_LV5|Level 5 - SCC |
$00000078.L|RW|XPT_LV6|Level 6 - MFP |
$0000007C.L|RW|XPT_LV7|Level 7 - |
$00000080.L|RW|XPT_T00|Trap #00 |
$00000084.L|RW|XPT_T01|Trap #01 |
$00000088.L|RW|XPT_T02|Trap #02 |
$0000008C.L|RW|XPT_T03|Trap #03 |
$00000090.L|RW|XPT_T04|Trap #04 |
$00000094.L|RW|XPT_T05|Trap #05 |
$00000098.L|RW|XPT_T06|Trap #06 |
$0000009C.L|RW|XPT_T07|Trap #07 |
$000000A0.L|RW|XPT_T08|Trap #08 |
$000000A4.L|RW|XPT_T09|Trap #09 |
$000000A8.L|RW|XPT_T10|Trap #10 |
$000000AC.L|RW|XPT_T11|Trap #11 |
$000000B0.L|RW|XPT_T12|Trap #12 |
$000000B4.L|RW|XPT_T13|Trap #13 |
$000000B8.L|RW|XPT_T14|Trap #14 |
$000000BC.L|RW|XPT_T15|Trap #15 |
$000000C0.L|RW|FPU_BOS|FFCP Branc or Set |020+
$000000C4.L|RW|FPU_INX|FFCP Inexact Result |020+
$000000C8.L|RW|FPU_DBZ|FFCP Devide by Zero |020+
$000000CC.L|RW|FPU_UNR|FFCP Underflow |020+
$000000D0.L|RW|FPU_OPE|FFCP Operand Error |020+
$000000D4.L|RW|FPU_OVR|FFCP Overflow |020+
$000000D8.L|RW|FPU_NAN|FFCP signaling NAN |020+
$000000DC.L|RW| - |reserved |
$000000E0.L|RW|XPT_MMU|MMU Configuration Error |030+
$000000E4.L|RW| - |reserved |
$000000E8.L|RW| - |reserved |
$000000EC.L|RW| - |reserved |
$000000F0.L|RW| - |reserved |
$000000F4.L|RW| - |reserved |
$000000F8.L|RW| - |reserved |
$000000FC.L|RW| - |reserved |
$00000100.L|RW|XPT_CTR|B0 Centronix busy |*
$00000104.L|RW|XPT_DCD|B1 RS232 DCD |*
$00000108.L|RW|XPT_CTS|B2 RS232 CTS |*
$0000010C.L|RW|XPT_BLT|B3 Blitter Done |*BLT
$00000110.L|RW|XPT_T_D|B4 Timer D |*
$00000114.L|RW|XPT_T_C|B5 Timer C |*
$00000118.L|RW|XPT_KBD|B6 IKBD/MIDI |*
$0000011C.L|RW|XPT_FDC|B7 FDC/HDC |*
$00000120.L|RW|XPT_T_B|A0 Timer B |*
$00000124.L|RW|XPT_XMT|A1 Transmit Error |*
$00000128.L|RW|XPT_EMP|A2 Transmit Buffer empty |*
$0000012C.L|RW|XPT_REC|A3 Receive Error |*
$00000130.L|RW|XPT_FUL|A4 Receive Buffer full |*
$00000134.L|RW|XPT_T_A|A5 Timer A |*
$00000138.L|RW|XPT_RNG|A6 RS232 Ring Indicator |*
$0000013C.L|RW|XPT_SND|A7 Monochrome Detect/Audio Subsystem |*
$00000140.L|RW| - |User defined Vectors |
...........|RW| - |.................... |
$000003FC.L|RW| - |User defined Vectors |
===========#==#=======#===============================================#=====
----------------------|Random Access Memory |-----
===========#==#=======#===============================================#=====
$00000008.B|RW|RAM_TOP|RAM TOP |
...........|RW| - |....... |
$00CFFFFF.B|RW|RAM_END|RAM END (14MB) |
===========#==#=======#===============================================#=====
----------------------|1BM System Read Only Memory |-----
===========#==#=======#===============================================#=====
$00E00000.B|R-|ROM_TOP|1MB ROM TOP |F
...........|R-| - |........... |F
$00F0003F.B|R-|ROM_END|1MB ROM END |F
===========#==#=======#===============================================#=====
$00F00040.B|--| - |Illegal Address Space |
...........|--| - |..................... |
$00F9FFFF.B|--| - |Illegal Address Space |
===========#==#=======#===============================================#=====
----------------------|128KB Expanstion Cartidge Port |-----
===========#==#=======#===============================================#=====
$00FA0000.L|R-|ROM_PRT|Cartridge Magic($FA52235F=Diag,$ABCDEF42=User*)|
$00FA0004.L|R-|ROM_CAL|Call Diagnostic Cardridge |
...........|R-| - |............ |
$00FBFFFF.B|R-| - |ROM Port END |
===========#==#=======#===============================================#=====
----------------------|192KB System Read Only Memory |-----
===========#==#=======#===============================================#=====
$00FC0000.B|--| - |192KB ROM TOP |ST
...........|--| - |............. |ST
$00FEFFFF.B|--| - |192KB ROM END |ST
===========#==#=======#===============================================#=====
----------------------|IDE Bus |-----
===========#==#=======#===============================================#=====
$FFFF0000. | | | |
$FFFF0009.B| |IDE_NSC|Number of Sectors |
$FFFF000D.B| |IDE_SCC|Sector count |
$FFFF0011.B| |IDE_CYL|Cylinder low |
$FFFF0015.B| |IDE_CYH|Cylinder high |
$FFFF0019.B| |IDE_H_D|Head/Drive Register |
$FFFF001D.B| |IDE_S_C|Read:Status Register/Write:Command Register |
$FFFF0039.B| | | |
===========#==#=======#===============================================#=====
----------------------|Memory Controller,System Control |-----
===========#==#=======#===============================================#=====
$FFFF8001.B|RW|MEM_CTL|Memory Controller |
$FFFF8006.W|RW|SYS_CTL|System Control %MM______ _RS_bB_C |F
| | | Monitor Type (M0,M1)--------++ || || | |F
| | | Monochrome Monitor----------00 || || | |F
| | | RGB Monitor-----------------01 || || | |F
| | | VGA Monitor-----------------10 || || | |F
| | | TV--------------------------11 || || | |F
| | | Reset 0:ignore resetvector------------+| || | |F
| | | STE-compatible-I/O 0:off,1:on----------+ || | |F
| | | Blitterflag 0:on,1:off-------------------+| | |F
| | | Blitterspeed 0:half clock,1:full clock----+ | |F
| | | CPUspeed 0:half clock,1:full clock----------+ |F
===========#==#=======#===============================================#=====
----------------------|DMA,VIDEL Controler |-----
===========#==#=======#===============================================#=====
$FFFF8201.B|RW|VDL_VBH|Video Base Hi |
$FFFF8203.B|RW|VDL_VBM|Video Base Mi |
$FFFF8205.B|Rw|VDL_VCH|Video Count Hi |
$FFFF8207.B|Rw|VDL_VCM|Video Count Mi |
$FFFF8209.B|Rw|VDL_VCL|Video Count Lo %xxxxxxx_ |
$FFFF820A.B|RW|VDL_SYM|Sync mode %______VS |
| | | Vfrequency 0:60hz(NTSC),1:50Hz(PAL)--------+| |
| | | Sync 0:internal,1:external------------------+ |
$FFFF820D.B|RW|VDL_VBL|Video Base Lo %xxxxxxx_ |STE,F
$FFFF820E.B|RW|VDL_LOF|Line Offset |STE,F
$FFFF820F.B|RW| - |Line Wide-1 |STE
$FFFF8210.W|RW|VDL_LWD|Line Wide in Words %______xx xxxxxxxx |F
$FFFF8240.W|RW|VDL_STC|ST Pallete Register 00 %____rRRR gGGGbBBB |
...........|RW| - |...................... |
$FFFF825E.W|RW| - |ST Pallete Register 15 |
$FFFF8260.B|RW|VDL_SSM|ST-Shift-Mode/TT-Shift-Mode %_____xxx |
| | | 320*200*4---------------------------------000 |
| | | 640*200*2---------------------------------001 |
| | | 640*400*1---------------------------------010 |
| | | nute--------------------------------------011 |
| | | 640*480*4---------------------------------100 |TT
| | | 1280*960*1--------------------------------101 |TT
| | | 320*480*8---------------------------------110 |TT
| | | nute--------------------------------------111 |TT
$FFFF8264.B|RW|VDL_HSH|H-Scroll Hi %____xxxx |F
$FFFF8265.B|RW|VDL_HSL|H-Scroll Lo - clears Line Wide %____xxxx |STE,F
$FFFF8266.W|RW|VDL_FSM|Falcon Shift Mode %_____2OT _HV8PPPP |F
| | | 2 Color mode 0:off,1:on----------+|| ||||||| |F
| | | Overlay mode 0:off,1:on-----------+| ||||||| |F
| | | True(high) color 0:off,1:on--------+ ||||||| |F
| | | Hsync 0:internal,1:external-----------+|||||| |F
| | | Vsync 0:internal,1:external------------+||||| |F
| | | 8 Bitplanes 0:off,1:on------------------+|||| |F
| | | falcon Palette 16 of 256 colors----------++++ |F
$FFFF8280.W|RW|VDL_HHC|Horizontal Hold Counter %_______x xxxxxxxx |F
$FFFF8282.W|RW|VDL_HHT|Horizontal Hold Timer %_______x xxxxxxxx |F
$FFFF8284.W|RW|VDL_HBB|Horizontal Border Begin %_______x xxxxxxxx |F
$FFFF8286.W|RW|VDL_HBE|Horizontal Border End %_______x xxxxxxxx |F
$FFFF8288.W|RW|VDL_HDB|Horizontal Display Begin %______Hx xxxxxxxx |F
| | | 0:1.Halftline, 1:2.Halfline-------+ |F
$FFFF828A.W|RW|VDL_HDE|Horizontal Display End %_______x xxxxxxxx |F
$FFFF828C.W|RW|VDL_HSS|Horizontal Sync Start %_______x xxxxxxxx |F
$FFFF828E.W|RW|VDL_HFS|Horizontal FS %_______x xxxxxxxx |F
$FFFF8290.W|RW|VDL_HEE|Horizontal EE %_______x xxxxxxxx |F
$FFFF82A0.W|RW|VDL_VFC|Vertical Frequenz Counter %_____xxx xxxxxxxx |F
$FFFF82A2.W|RW|VDL_VFT|Vertical Frequenz Timer %_____xxx xxxxxxxx |F
$FFFF82A4.W|RW|VDL_VBB|Vertical Border Begin %_____xxx xxxxxxxx |F
$FFFF82A6.W|RW|VDL_VBE|Vertical Border End %_____xxx xxxxxxxx |F
$FFFF82A8.W|RW|VDL_VDB|Vertical Display Begin %_____xxx xxxxxxxx |F
$FFFF82AA.W|RW|VDL_VDE|Vertical Display End %_____xxx xxxxxxxx |F
$FFFF82AC.W|RW|VDL_VSS|Vertical Sync Start %_____xxx xxxxxxxx |F
$FFFF82C0.W|RW|VDL_VCT|Video Control %_______O BHVUSCMM |F
| | | h-base-Offset 0:128cyc,1:64cyc-----+ |||||||| |F
| | | Buswide 0:16bit,1:32bit--------------+||||||| |F
| | | Hsync 0:negative,1:positive-----------+|||||| |F
| | | Vsync 0:negative,1:positive------------+||||| |F
| | | Use FS & EE 0:on,1:off------------------+|||| |F
| | | 15 halflinehSyncs at VBB-----------------+||| |F
| | | video Clock 0:32Mhz,1:25.175Mhz-----------+|| |F
| | | Monitor 0:Mono,1:RGB,2:VGA,3:TV------------++ |F
$FFFF82C2.W|RW|VDL_VMD|Video Mode %________ ____xxID |F
| | | Pixclock:4,Divider:4(VGA)/16(STE)/4------00|| |F
| | | Pixclock:2,Divider:2(VGA)/16(STE)/2------01|| |F
| | | Pixclock:1,Divider:2(VGA)/16(STE)/1------10|| |F
| | | nute-------------------------------------11|| |F
| | | Interlace 0:off,1:on-----------------------+| |F
| | | Double Scan 0:off,1:on----------------------+ |F
===========#==#=======#===============================================#=====
----------------------|TT Palette Registers |-----
===========#==#=======#===============================================#=====
$FFFF8400.W|RW|TT__PAL|TT Palette Register 000 |TT
...........|RW| - |....................... |TT
$FFFF85FE.W|RW| - |TT Palette Register 255 |TT
===========#==#=======#===============================================#=====
----------------------|DMA,WD1772 Disk Controller |-----
===========#==#=======#===============================================#=====
$FFFF8604.W|RW|WDC_SEC|FDC/HDC Access/Sector Count |
$FFFF8606.W|R-|WDC_DMA|DMA Status %________ _____DSE |
| | | Data request condition--------------------+|| |
| | | Sector count 0:zero,1:not zero-------------+| |
| | | DMA 0:no error,1:error----------------------+ |
|-W| |DMA Mode %_______W FD_SHAA_ |
| | | 0:read,1:write---------------------+ || |||| |
| | | 0:HDC,1:FDC access-------------------+| |||| |
| | | DMA 0:on,1:off------------------------+ |||| |
| | | 0:FDC/HDC register 1:sector count-------+||| |
| | | 0:FDC,1:HDC access-----------------------+|| |
| | | A1/A0 pin 0:low,1:high--------------------++ |
$FFFF8609.B|RW|WDC_BSH|DMA Base and Counter Hi |
$FFFF860B.B|RW|WDC_BSM|DMA Base and Counter Mi |
$FFFF860D.B|RW|WDC_BSL|DMA Base and Counter Lo |
$FFFF860E.B|RW|WDC_BSL|Frequency and Density control %______FD |STE,F
| | |Frequency 0:8MHz,1:16MHz--------------------+| |
| | |Density 0:DD,1:HD----------------------------+ |
===========#==#=======#===============================================#=====
----------------------|DMA SCSI |-----
===========#==#=======#===============================================#=====
$FFFF8701.B|RW|SCS_DA0|DMA Address Pointer (Highest byte) |TT
$FFFF8703.B|RW|SCS_DA1|DMA Address Pointer (High byte) |TT
$FFFF8705.B|RW|SCS_DA2|DMA Address Pointer (Low byte) |TT
$FFFF8707.B|RW|SCS_DA3|DMA Address Pointer (Lowest byte) |TT
$FFFF8709.B|RW|SCS_BC0|DMA Byte Counter (Highest byte) |TT
$FFFF870B.B|RW|SCS_BC1|DMA Byte Counter (High byte) |TT
$FFFF870D.B|RW|SCS_BC2|DMA Byte Counter (Low byte) |TT
$FFFF870F.B|RW|SCS_BC3|DMA Byte Counter (Lowest byte) |TT
$FFFF8710.W|Rw|SCS_DA0|Rest data (High Word) |TT
$FFFF8712.W|Rw|SCS_DA0|Rest data (Low Word) |TT
$FFFF8714.W|Rw|SCS_CTL|DMA SCSI Control Register %________ BZ____DW |TT
| | | Bus Error 0:no,1:yes-----------------+| || |TT
| | | Byte Counter Zero 0:no,1:yes----------+ || |TT
| | | DMA 0:off,1:on-----------------------------+| |TT
| | | DMA 0:read,1:write--------------------------+ |TT
===========#==#=======#===============================================#=====
----------------------|5380 SCSI Drive Controller |-----
===========#==#=======#===============================================#=====
$FFFF8781.B|RW|SCS_CDB|Contents of SCSI-Data Buses |TT
$FFFF8783.B|RW|SCS_ICR|Init Command Register |TT
$FFFF8785.B|RW|SCS_TSR|Transfer Start Register |TT
$FFFF8787.B|RW|SCS_TCR|Target Command Register |TT
$FFFF8789.B|RW|SCS_BSR|Bus Status Register |TT
$FFFF878B.B|RW|SCS_DSR|Device Status Register |TT
$FFFF878D.B|RW|SCS_BCD|SCSI-Bus Command Data |TT
$FFFF878F.B|RW|SCS_RES|Reset Interupts,Parity error,Start DMA-Action |TT
===========#==#=======#===============================================#=====
----------------------|YM2149/AY-3-8910 Sound Chip |-----
===========#==#=======#===============================================#=====
$FFFF8800.B|R-|PSG_SEL|Read Data |
|-W| |Register Select |
$FFFF8802.B|rW|PSG_DAT|Write Data |
| | | PSG Register 14 - Port A %RICDPBAS |
| | | Reset IDE 0:no,1:reset (slow down)---+||||||| |F
| | | Internal Speaker 0:on,1:off-----------+|||||| |F
| | | Centronics Strobe----------------------+||||| |
| | | Reset DSP 0:no,1:reset------------------+|||| |F
| | | Printer Select In------------------------+||| |
| | | Drive B select 0:on,1:off-----------------+|| |
| | | Drive A select 0:on,1:off------------------+| |
| | | Side select 0:side1,1:side0-----------------+ |
| | | PSG Register 15 - Port B %xxxxxxxx |
| | | Centronics Data Port-----------------++++++++ |
===========#==#=======#===============================================#=====
----------------------|DMA,CODEC,ADC,DAC,DSP-Transmit,DSP-Receive |-----
===========#==#=======#===============================================#=====
$FFFF8900.W|RW|SND_DMA|Sound-DMA-Control %____RPRP F_EL__EL |F,STE
| | | Timer A after Record/Play-------++|| | || || |F
| | | MFP I/O 7 after Record/Play-------++ | || || |F
| | | Frame Registers 0:play,1:record------+ || || |F
| | | DMA record Enable/Loop-----------------++ || |F
| | | DMA play Enable/Loop-----------------------++ |F,STE
$FFFF8903.B|RW|SND_FSH|Frame Start Hi |F,STE
$FFFF8905.B|RW|SND_FSM|Frame Start Mi |F,STE
$FFFF8907.B|RW|SND_FSL|Frame Start Lo |F,STE
$FFFF8909.B|RW|SND_FCH|Frame Count Hi |F,STE
$FFFF890B.B|RW|SND_FCM|Frame Count Mi |F,STE
$FFFF890D.B|RW|SND_FCL|Frame Count Lo |F,STE
$FFFF890F.B|RW|SND_FEH|Frame End Hi |F,STE
$FFFF8911.B|RW|SND_FEM|Frame End Mi |F,STE
$FFFF8913.B|RW|SND_FEL|Frame End Lo |F,STE
$FFFF8920.W|RW|SND_SMC|Sound Mode Control %__SS__PP MB____FF |F,STE
| | | DAC to track %SS--------------++ || || || |F
| | | Play %PP+1 tracks-----------------++ || || |F
| | | 0:Stereo,0:Mono----------------------+| || |F
| | | 0:8bit,1:16bit------------------------+ || |F
| | | Falcon:nute------STE: 6258 Hz--------------00 |F,STE
| | | Falcon:12292 Hz--STE:12517 Hz--------------01 |F,STE
| | | Falcon:19668 Hz--STE:25033 Hz--------------10 |F,STE
| | | Falcon:49170 Hz--STE:50066 Hz--------------11 |F,STE
$FFFF8922.B|RW| - |Microwire Data Register |STE
$FFFF8924.B|RW| - |Microwire Mask Register |STE
$FFFF8930.W|RW|SND_SDC|Source Device Clock %_CC__CCH TCCHSCCH |F
| | | A/D-Converter (%00 or %01)---++ ||| |||||||| |F
| | | External Input-------------------+++ |||||||| |F
| | | 0:Tristate,1:connect DSP&Multiplexer-+||||||| |F
| | | DSP Transmit--------------------------+++|||| |F
| | | 0:if DMAplay->DSPrec and Handshake on----+||| |F
| | | DMA Play----------------------------------+++ |F
| | | 25.175 MHz Clock--------------------------00| |F
| | | external Clock----------------------------01| |F
| | | 32.000 MHz Clock--------------------------10| |F
| | | nute--------------------------------------11| |F
| | | Handshaking 0:on,1:off----------------------+ |F
$FFFF8932.W|RW|SND_DDM|Destination Device Matrix %_DD__DDH TDDHSDDH |F
| | | D/A-Converter----------------++ ||| |||||||| |F
| | | External Output------------------+++ |||||||| |F
| | | 0:Tristate,1:connect DSP&Multiplexer-+||||||| |F
| | | DSP Receive---------------------------+++|||| |F
| | | 0:if DMA Rec=%001------------------------+||| |F
| | | DMA Record--------------------------------+++ |F
| | | Device:DMA Play---------------------------00+ |F
| | | Device:DSP Transmit-----------------------01+ |F
| | | Device:External Input---------------------10+ |F
| | | Device:A/D-Converter----------------------11+ |F
| | | Handshaking 0:on,1:off----------------------+ |F
$FFFF8934.B|RW|SND_SEC|Scale External Clock %____SSSS |F
$FFFF8935.B|RW|SND_SIC|Scale Internal Clock %____SSSS |F
| | | Clock/256 use Sound Mode Control--------0000 |F
| | | Clock/512 (49170Hz)---------------------0001 |F
| | | Clock/768 (32780Hz)---------------------0010 |F
| | | Clock/1024 (24585Hz)---------------------0011 |F
| | | Clock/1280 (19668Hz)---------------------0100 |F
| | | Clock/1536 (16390Hz)---------------------0101 |F
| | | Clock/1792 (14049Hz)-invalid-------------0110 |F
| | | Clock/2048 (12292Hz)---------------------0111 |F
| | | Clock/2304 (10927Hz)-invalid-------------1000 |F
| | | Clock/2560 ( 9834Hz)---------------------1001 |F
| | | Clock/2816 ( 8940Hz)-invalid-------------1010 |F
| | | Clock/3072 ( 8195Hz)---------------------1011 |F
| | | Clock/3328 ( 7565Hz)-invalid-------------1100 |F
| | | Clock/3584 ( 7024Hz)-invalid-------------1101 |F
| | | Clock/3840 ( 6556Hz)-invalid-------------1110 |F
| | | Clock/4096 ( 6146Hz)-invalid-------------1111 |F
$FFFF8936.B|RW|SND_TRC|Track Record Control %______TT |F
| | | Record %TT+1 Tracks |F
$FFFF8937.B|RW|SND_CDI|CODEC Input %______MA |F
| | | A/D-Converter 0:dis-,1:connect-------------+| |F
| | | Multiplexer 0:dis-,1:connect with CODEC-----+ |F
$FFFF8938.B|RW|SND_ADC|A/D-Converter Input %______LR |F
| | | 0:External Input (left/right),1:PSG--------++ |F
$FFFF8939.B|RW|SND_CIA|Channel Input Amplifier %LLLLRRRR |F
$FFFF893A.W|RW|SND_COR|Channel Output Reduction %____LLLL RRRR____ |F
$FFFF893C.W|Rw|SND_CDS|CODEC Status %______LR LR______ |F
| | | Overflow left/rigth---------------++ || |F
| | | Overrun left/rigth-------------------++ |F
$FFFF8940.W|RW|SND_DIR|GPx Dircetion %________ _____GGG |F
| | | G0-G2 Pin 0:input,1:output----------------+++ |F
$FFFF8942.W|RW|SND_PRT|GPx Port %_____GGG _____GGG |F
| | | G0-G2 Pin input/output-----------+++------+++ |F
===========#==#=======#===============================================#=====
----------------------|Realtime Clock Chip, Non Volatile Memory |-----
===========#==#=======#===============================================#=====
$FFFF8961.B|RW|NVM_CTL|Register Select |TT,F
$FFFF8963.B|RW|NVM_DAT|Data of selected Register |TT,F
===========#==#=======#===============================================#=====
----------------------|DMA,Blitter |-----
===========#==#=======#===============================================#=====
$FFFF8A00.W|RW|BLT_HTR|Halftone-Ram 00 |BLT
...........|RW| - |............... |BLT
$FFFF8A1E.W|RW| - |Halftone-Ram 15 |BLT
$FFFF8A20.W|RW|BLT_SXI|Source X increment %xxxxxxxx xxxxxxx_ |BLT
$FFFF8A22.W|RW|BLT_SYI|Source Y increment %xxxxxxxx xxxxxxx_ |BLT
$FFFF8A24.L|RW|BLT_SRC|Source Address %xxxxxxxx xxxxxxxx xxxxxxx_ |BLT
$FFFF8A28.W|RW|BLT_EM1|Endmask 1 |BLT
$FFFF8A2A.W|RW|BLT_EM2|Endmask 2 |BLT
$FFFF8A2C.W|RW|BLT_EM3|Endmask 3 |BLT
$FFFF8A2E.W|RW|BLT_DXI|Destination X increment %xxxxxxxx xxxxxxx_ |BLT
$FFFF8A30.W|RW|BLT_DYI|Destination Y increment %xxxxxxxx xxxxxxx_ |BLT
$FFFF8A32.L|RW|BLT_DST|Destination Adr. %xxxxxxxx xxxxxxxx xxxxxxx_ |BLT
$FFFF8A36.W|RW|BLT_WPL|Words per Line in BOB (0:65536)|BLT
$FFFF8A38.W|RW|BLT_LPB|Lines per BOB (0:65536)|BLT
$FFFF8A3A.B|RW|BLT_HTO|Halftone Operation %______xx |BLT
| | | 0:set all Bits, 1:HTR, 2:SRC, 3:SRC & HTR |BLT
$FFFF8A3B.B|RW|BLT_LGO|Logical Operation %____xxxx |BLT
| | | (!S AND !D)------------------------------+||| |BLT
| | | (!S AND D)-------------------------------+|| |BLT
| | | ( S AND !D)--------------------------------+| |BLT
| | | ( S AND D)---------------------------------+ |BLT
$FFFF8A3C.B|RW|BLT_LNM|Line Number %BHS_xxxx |BLT
| | | Busy (1:start Blitter)---------------+|| |||| |BLT
| | | HOG (1:stop CPU when Busy)------------+| |||| |BLT
| | | SMUDGE (use sourcebits 0-3 as HTR num)-+ |||| |BLT
| | | Halftone-Ram number----------------------++++ |BLT
$FFFF8A3D.B|RW|BLT_SKW|SKEW %FN__xxxx |BLT
| | | FXSR (Force eXtra Source Read)-------+| |||| |BLT
| | | NFSR (No Final Source Read)-----------+ |||| |BLT
| | | SKEW (shift)-----------------------------++++ |BLT
===========#==#=======#===============================================#=====
----------------------|DMA SCC |-----
===========#==#=======#===============================================#=====
$FFFF8C01.B|RW|SCC_DA0|DMA Address Pointer (Highest byte) |TT
$FFFF8C03.B|RW|SCC_DA1|DMA Address Pointer (High byte) |TT
$FFFF8C05.B|RW|SCC_DA2|DMA Address Pointer (Low byte) |TT
$FFFF8C07.B|RW|SCC_DA3|DMA Address Pointer (Lowest byte) |TT
$FFFF8C09.B|RW|SCC_BC0|DMA Byte Counter (Highest byte) |TT
$FFFF8C0B.B|RW|SCC_BC1|DMA Byte Counter (High byte) |TT
$FFFF8C0D.B|RW|SCC_BC2|DMA Byte Counter (Low byte) |TT
$FFFF8C0F.B|RW|SCC_BC3|DMA Byte Counter (Lowest byte) |TT
$FFFF8C10.W|Rw|SCC_DA0|Rest data (High Word) |TT
$FFFF8C12.W|Rw|SCC_DA0|Rest data (Low Word) |TT
$FFFF8C14.W|Rw|SCC_CTL|DMA SCC Control Register %________ BZ____DW |TT
| | | Bus Error 0:no,1:yes-----------------+| || |TT
| | | Byte Counter Zero 0:no,1:yes----------+ || |TT
| | | DMA 0:off,1:on-----------------------------+| |TT
| | | 0:DMA read,1:DMA write----------------------+ |TT
===========#==#=======#===============================================#=====
----------------------|SCC Y8530 - Serial Communication Controller |-----
===========#==#=======#===============================================#=====
$FFFF8C81.B|RW|SCA_CTL|Channel A Control (select/read/write Register) |SCC
$FFFF8C83.B|RW|SCA_DAT|Channel A Data (read/write Register 8) |SCC
$FFFF8C85.B|RW|SCB_CTL|Channel B Control (select/read/write Register) |SCC
$FFFF8C87.B|RW|SCB_DAT|Channel B Data (read/write Register 8) |SCC
===========#==#=======#===============================================#=====
----------------------|VME Bus |-----
===========#==#=======#===============================================#=====
$FFFF8E01.B|RW|VME_MR0|VME Mask Register 0 |TT,ME
$FFFF8E03.B|RW|VME_SR0|VME Status Register 0 %EMSV_HS_ |TT,ME
| | | Error 0:no,1:yes---------------------+||| || |TT,ME
| | | MFP-----------------------------------+|| || |TT,ME
| | | SCC------------------------------------+| || |TT,ME
| | | VBL-------------------------------------+ || |TT,ME
| | | HBL---------------------------------------+| |TT,ME
| | | Software Intereupt-------------------------+ |TT,ME
$FFFF8E05.B|RW|VME_IN0|Force Interrupt on Level 1 %_______F |TT,ME
$FFFF8E07.B|RW|VME_IN1|Force Interrupt on Level 3 %_______F |TT,ME
$FFFF8E0D.B|RW|VME_MR1|VME Mask Register 1 |TT,ME
$FFFF8E0F.B|RW|VME_SR1|VME Status Register 1 %7654321_ |TT,ME
| | | VME Interrupt 1-7 0:on,1:off---------+++++++ |
-----------+--+-------+-----------------------------------------------+-----
$FFFF8E0F.B|RW|M_E_CAC|Cache and CPU Control %???????? |ME
===========#==#=======#===============================================#=====
----------------------|Paddle Ports |-----
===========#==#=======#===============================================#=====
$FFFF9200.W|RW|PAD_BUT|Paddle/Joy Buttons %xxxxxxxx ____3210 |STE,F
| | | Switches--------------------++++++++ |,TT
| | | On Falcon at U47: MSB on the rigth,closed=0 |
$FFFF9202.W|RW|PAD_MOV|Paddle/Joy Move |STE,F
$FFFF9210.W|RW|PAD_PD0|Pad0 Position |STE,F
$FFFF9212.W|RW|PAD_PD1|Pad1 Position |STE,F
$FFFF9214.W|RW|PAD_PD2|Pad2 Position |STE,F
$FFFF9216.W|RW|PAD_PD3|Pad3 Position |STE,F
$FFFF9220.W|RW|PAD_LPX|Lightpen X |STE,F
$FFFF9222.W|RW|PAD_LPY|Lightpen Y |STE,F
===========#==#=======#===============================================#=====
----------------------|VIDEL Pallete Register |-----
===========#==#=======#===============================================#=====
$FFFF9800.L|RW|VDL_PAL|Pallete Register 000 %RRRRRR__ GGGGGG__ |F
...........|RW| - |.................... ________ BBBBBB__ |F
$FFFF98FC.L|RW| - |Pallete Register 255 |F
===========#==#=======#===============================================#=====
----------------------|DSP 56001 Host - Digital Sync Processor |-----
===========#==#=======#===============================================#=====
$FFFFA200.B|RW|DSP_ICR|Intrrupt Control Register (%IMMHH_TR) |DSP
$FFFFA201.B|RW|DSP_CVR|Command Vector Register (%I__VVVVV) |DSP
$FFFFA202.B|RW|DSP_ISR|Interrupt Status Register (%ID_HHETR) |DSP
$FFFFA203.B|RW|DSP_IVR|Interrupt Vector Register (Vector Number) |DSP
$FFFFA204.B|RW|DSP_TR0|Transfer Highest Byte (DSP56003 32bit) |DSP32
$FFFFA205.B|RW|DSP_TR1|Transfer Hi |DSP
$FFFFA206.B|RW|DSP_TR2|Transfer Mi |DSP
$FFFFA207.B|RW|DSP_TR3|Transfer Lo |DSP
===========#==#=======#===============================================#=====
----------------------|MFP 68901 - Multi Function Peripheral |-----
===========#==#=======#===============================================#=====
$FFFFFA01.B|RW|MFP_PDR|Paralellport Data Register %SRFKBRDC |
$FFFFFA03.B|RW|MFP_AER|Aktive Edge Register %SRFKBRDC |
| | | Interrupt on 0:High-Low,1:Low-High |||||||| |!F
| | | Interrupt on 0:Low-High,1:High-Low |||||||| |F
$FFFFFA05.B|RW|MFP_DIR|Data-direction %SRFKBRDC |
| | | I/O-7 Mono Detect/Sound--------------+||||||| |
| | | I/O-6 RS232 Ring Indicator------------+|||||| |
| | | I/O-5 FDC/HDC--------------------------+||||| |
| | | I/O-4 IKBD/MIDI-------------------------+|||| |
| | | I/O-3 Blitter Done-----------------------+||| |
| | | I/O-2 RS232 CTS---------------------------+|| |
| | | I/O-1 RS232 DCD----------------------------+| |
| | | I/O-0 Centronics Busy-----------------------+ |
$FFFFFA07.B|RW|MFP_IEA|Interrupt Enable A %76AbebeB |
$FFFFFA09.B|RW|MFP_IEB|Interrupt Enable B %54CD3210 |
$FFFFFA0B.B|RW|MFP_IPA|Interrupt Pending A %76AbebeB |
$FFFFFA0D.B|RW|MFP_IPB|Interrupt Pending B %54CD3210 |
$FFFFFA0F.B|RW|MFP_ISA|Interrupt In-Service A %76AbebeB |
$FFFFFA11.B|RW|MFP_ISB|Interrupt In-Service B %54CD3210 |
$FFFFFA13.B|RW|MFP_IMA|Interrupt Mask A %76AbebeB |
| | | I/O 7 Mono Detect/Sound--------------+||||||| |
| | | I/O 6 RS232 Ring----------------------+|||||| |
| | | Timer A--------------------------------+||||| |
| | | Receive Buffer full---------------------+|||| |
| | | Receive Error----------------------------+||| |
| | | Transmit Buffer empty---------------------+|| |
| | | Transmit Error-----------------------------+| |
| | | Timer B-------------------------------------+ |
$FFFFFA15.B|RW|MFP_IMB|Interrupt Mask B %54CD3210 |
| | | I/O 5 FDC/HDC------------------------+||||||| |
| | | I/O 4 IKBD/MIDI-----------------------+|||||| |
| | | Timer C--------------------------------+||||| |
| | | Timer D---------------------------------+|||| |
| | | I/O 3 Blitter Done-----------------------+||| |
| | | I/O 2 RS232 CTS---------------------------+|| |
| | | I/O 1 RS232 DCD----------------------------+| |
| | | I/O 0 Centronics Busy-----------------------+ |
$FFFFFA17.B|RW|MFP_VCR|Vector Register %xxxxI___ |0100
| | | End of Interupt 0:software,1:auto--------+ |1000
| | | VCR should contain------------------%0100?000 |*
$FFFFFA19.B|RW|MFP_TAC|Timer A Control %____EAAA |
$FFFFFA1B.B|RW|MFP_TBC|Timer B Control %____EBBB |
| | | Event Count Mode-------------------------1000 |
| | | Pulse Extension--------------------------1xxx |
| | | Delay------------------------------------0xxx |
| | | ||| |
$FFFFFA1D.B|RW|MFP_TDC|Timer C+D Control %_CCC_DDD |
| | | Timer C Control-----------------------+++ ||| |
| | | Timer D Control---------------------------+++ |
| | | Stop Timer--------------------------------000 |
| | | Delay,Clockdivide 4 3200Hz--------------001 |
| | | Delay,Clockdivide 10 1280Hz--------------010 |
| | | Delay,Clockdivide 16 800Hz--------------011 |
| | | Delay,Clockdivide 50 256Hz--------------100 |
| | | Delay,Clockdivide 64 200Hz--------------101 |
| | | Delay,Clockdivide 100 128Hz--------------110 |
| | | Delay,Clockdivide 200 64Hz--------------111 |
$FFFFFA1F.B|RW|MFP_TAD|Timer A Data |
$FFFFFA21.B|RW|MFP_TBD|Timer B Data |
$FFFFFA23.B|RW|MFP_TCD|Timer C Data |
$FFFFFA25.B|RW|MFP_TDD|Timer D Data |
$FFFFFA27.B|RW|MFP_SYC|Syncronous Character |
$FFFFFA29.B|RW|MFP_UCR|Usart Control %DBBSSPE_ |
| | | Divider 0:div1(sync),1:div16---------+|||||| |
| | | Databits 00:8,01:7,10:6,11:5----------++|||| |
| | | 00:sync,01:1stop,10:1.5stop,11:2stop----++|| |
| | | Parity 0:off,1:on-------------------------+| |
| | | Parity 0:odd,1:even------------------------+ |
$FFFFFA2B.B|RW|MFP_RES|Receiver Status %BOPFSCPR |
| | | Buffer full--------------------------+||||||| |
| | | Overrun Error-------------------------+|||||| |
| | | Parity Error---------------------------+||||| |
| | | Frame Error-----------------------------+|||| |
| | | SCR found/Break--------------------------+||| |
| | | SCR received/Startbit detected------------+|| |
| | | Syncronous Strip Enable--------------------+| |
| | | Receiver Enable-----------------------------+ |
$FFFFFA2D.B|RW|MFP_TRS|Transmitter Status %BUAEBHLT |
| | | Buffer Empty-------------------------+||||||| |
| | | Underrun Error (char sent)------------+|||||| |
| | | Auto Turnaround------------------------+||||| |
| | | EOT End of Transmission-----------------+|||| |
| | | Break------------------------------------+||| |
| | | 00:High,01:Low,10:High,11:loopback,High---++| |
| | | Transmitter Enable--------------------------+ |
$FFFFFA2F.B|RW|MFP_UAD|Usart Data |
===========#==#=======#===============================================#=====
----------------------|FPC - Floating Point Coprocessor |-----
===========#==#=======#===============================================#=====
$FFFFFA40.W|RW|FPC_STA|Status Register |ME
$FFFFFA42.W|RW|FPC_CTL|Cotrol Register |ME
$FFFFFA44.W|RW|FPC_SAV|Save Register |ME
$FFFFFA46.W|RW|FPC_RES|Restore Register |ME
$FFFFFA4A.W|RW|FPC_CMD|Command Register |ME
$FFFFFA4E.W|RW|FPC_CCR|Conditional Code Register |ME
$FFFFFA46.W|RW|FPC_OPR|Operand Register |ME
$FFFFFA46.W|RW|FPC_IAR|Instruction Address Register |ME
===========#==#=======#===============================================#=====
----------------------|MFP 68901 number 2 |-----
===========#==#=======#===============================================#=====
$FFFFFA81.B|RW|MF2_PDR|Parallel Port Data Register |TT
...........| | |........................... |TT
$FFFFFAAF.B|RW|MF2_PDR|USART Data Register |TT
===========#==#=======#===============================================#=====
----------------------|ACIA 6850 (Midi/Keyboard) |-----
===========#==#=======#===============================================#=====
$FFFFFC00.B|R-|KBD_CTL|IKBD Status %IPOFCDTR |
" |-W|KBD_CTL|IKBD Control %ITTBSPDD |
| | | 7N1,7812.5,RTS low,Rec on,Send off= %10010110 |*
$FFFFFC02.B|RW|KBD_DAT|IKBD Data |
$FFFFFC04.B|R-|MID_CTL|MIDI Status %IPOFCDTR |
| | | Interrupt Request--------------------+||||||| |
| | | Parity Error--------------------------+|||||| |
| | | Receiver Overrun-----------------------+||||| |
| | | Frame Error-----------------------------+|||| |
| | | CTS Clear to Send------------------------+||| |
| | | DCD Data Carrier Detect-------------------+|| |
| | | Transmitter Data Register full-------------+| |
| | | Receiver Data Register full-----------------+ |
" |-W|MID_CTL|MIDI Control %ITTBSPDD |
| | | 7N1,31250,RTS low,Rec on,Send off = %10010101 |*
| | | Interrupt 0:off,1:on-----------------+||||||| |
| | | RTS low, TransmitIRQ off--------------00||||| |
| | | RTS low, TransmitIRQ on---------------01||||| |
| | | RTS high,TransmitIRQ off--------------10||||| |
| | | RTS low, TransmitIRQ off,send break---11||||| |
| | | 8 Databits,2 Stopbits,Parity even-------000|| |
| | | 8 Databits,2 Stopbits,Parity odd--------001|| |
| | | 8 Databits,1 Stopbits,Parity even-------010|| |
| | | 8 Databits,1 Stopbits,Parity odd--------011|| |
| | | 7 Databits,2 Stopbits,Parity off--------100|| |
| | | 7 Databits,1 Stopbits,Parity off--------101|| |
| | | 7 Databits,1 Stopbits,Parity even-------110|| |
| | | 7 Databits,1 Stopbits,Parity odd--------111|| |
| | | Clockdivide 1 - 500000.0cps---------------00 |
| | | Clockdivide 16 - 31250.0cps (MIDI Std)----01 |
| | | Clockdivide 64 - 7812.5cps (IKBD!)-------10 |
| | | Master Reset-------------------------------11 |
| | | To link per MIDI you can also use div1/div64! |
$FFFFFC06.B|RW|MID_DAT|MIDI Data |
===========#==#=======#===============================================#=====
----------------------|RP5C15 Real Time Clock |-----
===========#==#=======#===============================================#=====
$FFFFFC21.B|RW| - |Seconds mod 10 %____xxxx |MST
$FFFFFC23.B|RW| - |Seconds div 10 %____xxxx |MST
$FFFFFC25.B|RW| - |Minutes mod 10 %____xxxx |MST
$FFFFFC27.B|RW| - |Minutes div 10 %____xxxx |MST
$FFFFFC29.B|RW| - |Hours mod 10 %____xxxx |MST
$FFFFFC2B.B|RW| - |Hours div 10 %____xxxx |MST
$FFFFFC2D.B|RW| - |Weekday %____xxxx |MST
$FFFFFC2F.B|RW| - |Day mod 10 %____xxxx |MST
$FFFFFC31.B|RW| - |Day div 10 %____xxxx |MST
$FFFFFC33.B|RW| - |Month mod 10 %____xxxx |MST
$FFFFFC35.B|RW| - |Month div 10 %____xxxx |MST
$FFFFFC37.B|RW| - |Year mod 10 %____xxxx |MST
$FFFFFC39.B|RW| - |Year div 10 %____xxxx |MST
$FFFFFC3B.B|RW| - |Clock mod %____xxxx |MST
$FFFFFC3D.B|RW| - |Clock test %____xxxx |MST
$FFFFFC3F.B|RW| - |Clock reset %____xxxx |MST
===========#==#=======#===============================================#=====
$FFFFFF82.W|RW| |
===========#==#=======#===============================================#=====
$FFFF820D.B|RW|VDL_VBL|Video Base Lo %xxxxxxx_ |STE,F
----+---- | +- ---+--- ------------------+---------------------------- --+--
| | | | | |
| | | | | Computer Type---------------+
| | | | +---Description
| | | +--------------------------Label
| | +--------------------------------Read/Write Access
| +----------------------------------Type (Byte,Word,Long)
+----------------------------------------Address (extended to 32 Bit)
Computer Type:
* |Software defined Standart
!xxx|all except xxx
0x0 |MC680x0 only
0x0+|MC680x0 or higher
BLT |Standart on TT,STE,ME,F (Blitter)
SCC |Standart on TT,ME,F
VME |Standart on TT,ME
ST |Atari ST (260/520/1040)
STE |Atari STE (520/1040)
TT |Atari TT
MST |Atari Mega ST (1/2)
ME |Atari Mega STE
F |Atari Falcon
Description:
%
Read/Write Access:
R/-|Read only (Readregister)
-/W|Write only (Writeregister)
R/?|Readaccess allowed
?/W|Writeaccess allowed
r/?|Readaccess allowed but not senseful
?/w|Writeaccess allowed but not senseful