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memorymap.txt
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1996-01-28
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# -------------------------------------------------------------------
# MEMORY MAP (c) Copyright 1996 Nat! & KKP
# -------------------------------------------------------------------
# These are some of the results/guesses that Klaus and Nat! found
# out about the Jaguar with a few helpful hints by other people,
# who'd prefer to remain anonymous.
#
# Since we are not under NDA or anything from Atari we feel free to
# give this to you for educational purposes only.
#
# Please note, that this is not official documentation from Atari
# or derived work thereof (both of us have never seen the Atari docs)
# and Atari isn't connected with this in any way.
#
# Please use this informationphile as a starting point for your own
# exploration and not as a reference. If you find anything innacurate,
# missing, needing more explanation etc. by all means please write
# to us:
# nat@zumdick.rhein-main.de
# or
# kkp@gamma.dou.dk
#
# If you could do us a small favor, don't use this information for
# those lame flamewars on r.g.v.a or the mailing list.
#
# HTML soon ?
# -------------------------------------------------------------------
Very incomplete and very buggy! The main memory map is probably bullshit.
Hmm, fabulous ASCII art again :)
Interesting enough is that all addresses in the Jaguar are accessible.
Even if there's no memory 'behind' the address, you will not be
buserrored. This is probably a wise decision, making the running programs
more stable.
Hopefully you have some 68000 docs lying around, because the low memory
usage is just the same as on a 68000 in terms of vectors and the like.
General Jaguar Memory Model:
===========================
$000000 +------------------------+
| |
| RAM |
| | $1FFFFF
$200000 +------------------------+
| shadow |
| of $000000-$1FFFFF |
| RAM | $3FFFFF
$400000 +------------------------+
. .
. ... .
. .
. . $7FFFFF
$800000 +------------------------+
| |
| ROM |
| | $DFFFFF
$E00000 +------------------------+
| |
| BOOT-(EP)ROM | ????
| |
$F00000 +------------------------+
| TOM |
|------------------------+
$F10000 | JERRY |
+------------------------+ $F1FFFF
. .
. ... . ????
. .
..........................
TOM in more detail:
==================
$F00000 +-------------------------+
| Memory Configuration | $F00003
$F00004 +-------------------------+
| Object |
| Processor | $F00027
$F00028 +-------------------------+
| |
| Video Chip |
| | $F000DF
$F000E0 +-------------------------+
| IRQ Control | $F000E3
$F000E4 +-------------------------+
. ... . $F003FF
$F00400 +-------------------------+
| |
| Color Lookup Table |
| | $F007FF
$F00800 +-------------------------+
| |
| |
| Linebuffer 0 |
| |
| | $F00FFF
$F01000 +-------------------------+
| |
| |
| Linebuffer 1 |
| |
| | $F017FF
$F01800 +-------------------------+
| | probably Linebuffer 0 and 1
| | get mapped to this address
| Current Linebuffer | when they are active
| |
| | $F01FFF
$F02000 +-------------------------+
. ... . $F020FF
$F02100 +-------------------------+
| |
| GPU Control |
| | $F0211F
$F02120 +-------------------------+
. ... . $F021FF
$F02200 +-------------------------+
| |
| Blitter |
| | $F0229F
$F022A0 +-------------------------+
. ... . $F02FFF
$F03000 +-------------------------+
| |
| |
| 4 KB GPU RAM |
| |
| | $F03FFF
$F04000 +-------------------------+
. ... .
........................... $F0FFFF
Jerry in more detail:
====================
$F10000 ...........................
. ... . $F1000F
$F10010 +-------------------------+
| Clock Configuration | $F10015
$F10016 +-------------------------+
. .
. ... .
. . $F13FFF
$F14000 +-------------------------+
| Joystick/Config | $F14003
$F14004 +-------------------------+
. .
. ... .
. . $F1A0FF
$F1A100 +-------------------------+
| DSP Control | $F1A11F
$F1A120 +-------------------------+
. ... . $F1A147
$F1A148 +-------------------------+
| DAC / SSI | $F1A157
$F1A158 +-------------------------+
. .
. ... .
. .
$F1B000 +-------------------------+
| |
| |
| 8 KB DSP RAM |
| |
| | $F1CFFF
$F1D000 +-------------------------+
| Triangle Waveform | $F1D1FF
$F1D200 +-------------------------+
| Sine Waveform | $F1D3FF
$F1D400 +-------------------------+
| Another Sine Waveform | $F1D5FF
$F1D600 +-------------------------+
| sin( x) + sin( x + x) | $F1D7FF
$F1D800 +-------------------------+
| Sweep waveform | $F1D9FF
$F1DA00 +-------------------------+
| Triangle with Noise | $F1DBFF
$F1DC00 +-------------------------+
| Positive Spike | $F1DDFF
$F1DE00 +-------------------------+
| Noise | $F1DFFF
$F1E000 +-------------------------+
. ... .
........................... $F1FFFF
Memory Configuration:
=-=-=-=-=-=-=-=-=-=-=
$F00000 +------------+
| MEMCON1 | $F00001
$F00002 +------------+
| MEMCON2 | $F00003
+------------+
Object Processor:
=-=-=-=-=-=-=-=-=
$F00004 +------------+
| Hor Cnt | $F00005 Horizontal beam position
$F00006 +------------+
| Ver Cnt | $F00007 Vertical beam position
$F00008 +------------+
| Hor Pen | $F00009 Lightpen hor position
$F0000A +------------+
| Ver Pen | $F0000B Lightpen ver position
+------------+
$F00010 +---------------------------------------------------+
| Curent object phrase | $F00017
+---------------------------------------------------+
$F00020 +-------------------------+
| OP-List pointer | $F00023 Pointer to the Objectlist
$F00024 +-------------------------+
| Data pointer / Flag | $F00027 Internal pointer, OP flag
+-------------------------+
The Video Chip :
=-=-=-=-=-=-=-=
$F00028 +-------------+
| Video Mode | $F00029 Bordercolor Red+Green
$F0002A +-------------+-----------+
| Border RGB | $F0002D Red Green X Blue
$F0002E +-------------------------+
| hor period | $F0002F
$F00030 +-------------+
| HBL start | $F00031 horuizontal blanking start
$F00032 +-------------+
| HBL end | $F00033 horizontal blanking end
$F00034 +-------------+
| hor sync | $F00035
$F00036 +-------------+
| hor/ver sync| $F00037
$F00038 +-------------+
| disp strt1 | $F00039
$F0003A +-------------+
| disp strt2 | $F0003B
$F0003C +-------------+
| disp end | $F0003D
$F0003E +-------------+
| ver period | $F0003F
$F00040 +-------------+
| VBL start | $F00041
$F00042 +-------------+
| VBL end | $F00043
$F00044 +-------------+
| ver sync | $F00045
$F00046 +-------------+
| v disp start| $F00047
$F00048 +-------------+
| v disp end | $F00049
$F0004A +-------------+
| v equ begin | $F0004B
$F0004C +-------------+
| v equ end | $F0004D
$F0004E +-------------+
| vert IRQ | $F0004F
$F00050 +-------------+
| Timer Lo | $F00051
$F00052 +-------------+
| Timer Hi | $F00053
$F00054 +-------------+
| h equ end | $F00055
$F00056 +-------------+
| unused | $F00057
$F00058 +-------------+-------------+
| BKG Color | $F0005B initializes the linebuffers
+---------------------------+
TOM Interrupt control:
=-=-=-=-=-=-=-=-=-=-=
$F000E0 +------------+
| INT1 | $F000E1
$F000E2 +------------+
| INT2 | $F000E3
+------------+
GPU Control:
=-=-=-=-=-=
$F02100 +-------------------------+
| GPU Flags | $F02103
$F02104 +-------------------------+
| Matrix Control | $F02107
$F02108 +-------------------------+
| Pointer to Matrix | $F0210B
$F0210C +-------------------------+
| Data Organization | $F0210F
$F02110 +-------------------------+
| GPU PC | $F02113
$F02114 +-------------------------+
| GPU Control + Status | $F02117
$F02118 +-------------------------+
| High 32bit of phrase | $F0211B
$F0211C +-------------------------+
| Div remainder/control | $F0211F
+-------------------------+
Blitter:
=-=-=-=
$F02200 +-------------------------+
| A1 Datapointer | $F02203
$F02204 +-------------------------+
| A1 FLAGS | $F02207
$F02208 +-------------------------+
| A1 CLIP | $F0220B
$F0220C +-------------------------+
| A1 PIXEL | $F0220F
$F02210 +-------------------------+
| A1 STEP | $F02213
$F02214 +-------------------------+
| A1 FSTEP | $F02217
$F02218 +-------------------------+
| A1 FPIXEL | $F0221B
$F0221C +-------------------------+
| A1 INC | $F0221F
$F02220 +-------------------------+
| A1 FINC | $F02223
+-------------------------+
$F02224 +-------------------------+
| A2 Data pointer | $F02227
$F02228 +-------------------------+
| A2 FLAGS | $F0222B
$F0222C +-------------------------+
| A2 MASK | $F0222F
$F02230 +-------------------------+
| A2 PIXEL | $F02233
$F02234 +-------------------------+
| A2 STEP | $F02237
+-------------------------+
$F02238 +-------------------------+
| Command | $F0223B
$F0223C +-------------------------+
| Pixel/Line Counter | $F0223F
$F02240 +-------------------------+-------------------------+
| Source data | $F02247
$F02248 +---------------------------------------------------+
| Destination data | $F0224F
$F02250 +---------------------------------------------------+
| Destination Z | $F02257
$F02258 +---------------------------------------------------+
| Source Z integer | $F0225F
$F02260 +---------------------------------------------------+
| Source Z fractional | $F02267
$F02268 +---------------------------------------------------+
| Pattern data | $F0226F
$F02270 +---------------------------------------------------+
| Intensity Increment | $F02273
$F02274 +-------------------------+
| Z Increment | $F02277
$F02278 +-------------------------+
| Collision Control | $F0227B
+-------------------------+
$F0227C +-------------------------+
| Phrase Intensity 3 | $F0227F
$F02280 +-------------------------+
| Phrase Intensity 2 | $F02283
$F02284 +-------------------------+
| Phrase Intensity 1 | $F02287
$F02288 +-------------------------+
| Phrase Intensity 0 | $F0228B
+-------------------------+
$F0228C +-------------------------+
| Phrase Z 3 | $F0229F
$F02290 +-------------------------+
| Phrase Z 2 | $F02293
$F02294 +-------------------------+
| Phrase Z 1 | $F02297
$F02298 +-------------------------+
| Phrase Z 0 | $F0229B
+-------------------------+
Clocks:
=-=-=-=
$F10010 +------------+
| CLK1 | $F00011
$F10012 +------------+
| CLK2 | $F00013
$F10014 +------------+
|Chroma Clock| $F00015
+------------+
DSP Control:
=-=-=-=-=-=
$F1A100 +-------------------------+
| GPU Flags | $F1A103
$F1A104 +-------------------------+
| Matrix Control | $F1A107
$F1A108 +-------------------------+
| Pointer to Matrix | $F1A10B
$F1A10C +-------------------------+
| Data Organization | $F1A10F
$F1A110 +-------------------------+
| DSP PC | $F1A113
$F1A114 +-------------------------+
| DSP Control + Status | $F1A117
$F1A118 +-------------------------+
| Modulo Mask | $F1A11B
$F1A11C +-------------------------+
| Div remainder/control | $F1A11F
$F1A120 +-------------------------+
| High byte of MAC | $F1A123
+-------------------------+
Synchronous Serial Interface (SSI):
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
$F1A150 +------------+
| Frequency | $F1A153
$F1A154 +------------+
| Control | $F1A157
+------------+
DAC:
=-=
$F1A148 +------------+
| Right DAC | $F1A14B
$F1A14C +------------+
| Left DAC | $F1A14D
+------------+
