This archive contains numerous documents on the Amiga hardware.
They have come from numerous sources on my internet surfing.
Quick summary,

500 hacks.txt		A list of old A500 hacks
A1200-ccresetfix.txt	A fix for the A1200 CC_RESET (PCMCIA port reset)
amigafix.txt		A largelist of Amiga hardware fixes
Audio.txt		How the Amiga's Audio system works.
Autoconf.txt		How the Amiga's Autoconfig system works
Blitter.txt		How the blitter works
Cia.txt			Info on the 8520 CIAs
CIA8520.guide		An Amigaguide version of the above.
control.txt		Info on the system control hardware of the Amiga
Copper.txt		How the copper works
Intro.txt		Intro to the Amiga hardware.
Memory.txt		A500 Memory map.
Playfild.txt		How the Playfield stuff works
Ports.txt		Pinouts and operation of the Par, Ser and Joy ports
Register.txt		Summary of the Amiga's registers
Reg2.txt		More info on the Amiga's registers
Sprite.txt		How the sprite engine works and how to use it.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
-rw-rw-rw-     0/0        9604   28172  34.1% -lh5- 8871 Aug 21  1991 CONTROL.TXT
-rw-rw-rw-     0/0         821    1645  49.9% -lh5- cfe8 Dec 13  2000 Hardware-info-available.txt
-rw-rw-rw-     0/0       13950   41640  33.5% -lh5- 2fbe Aug 21  1991 COPPER.TXT
-rw-rw-rw-     0/0       25483   60616  42.0% -lh5- 2e38 Sep 30  1995 Hardware.txt
-rw-rw-rw-     0/0       19078   46075  41.4% -lh5- 62b2 Jun 16  2000 500HACKS.TXT
-rw-rw-rw-     0/0        9204   23716  38.8% -lh5- 8821 Aug 21  1991 INTRO.TXT
-rw-rw-rw-     0/0         771    1238  62.3% -lh5- 15d8 Apr 21  2000 A1200-ccresetfix.txt.info
-rw-rw-rw-     0/0         967    2259  42.8% -lh5- c45b Aug 21  1991 MEMORY.TXT
-rw-rw-rw-     0/0       30056  104266  28.8% -lh5- 8992 Aug 21  1991 PLAYFILD.TXT
-rw-rw-rw-     0/0        3221    7611  42.3% -lh5- 0af7 Oct 27  2000 Cia8520.guide
-rw-rw-rw-     0/0       12448   41433  30.0% -lh5- 1ce7 Aug 21  1991 PORTS.TXT
-rw-rw-rw-     0/0        3167    7769  40.8% -lh5- d37c Jun 23  1993 Cia8520.guide.$$$
-rw-rw-rw-     0/0       14416   45549  31.6% -lh5- e826 Aug 21  1991 REG2.TXT
-rw-rw-rw-     0/0         552     924  59.7% -lh5- 8f9f Apr 21  2000 A1200-ccresetfix.txt
-rw-rw-rw-     0/0        3648   14407  25.3% -lh5- 2ed8 Aug 21  1991 REGISTER.TXT
-rw-rw-rw-     0/0       19904   65391  30.4% -lh5- b139 Aug 21  1991 SPRITE.TXT
-rw-rw-rw-     0/0       16486   36723  44.9% -lh5- fff5 Jun 16  2000 AMIGAFIX.TXT
-rw-rw-rw-     0/0        5004   15358  32.6% -lh5- 6368 Aug 21  1991 AUTOCONF.TXT
-rw-rw-rw-     0/0       21172   63026  33.6% -lh5- 1b14 Aug 21  1991 AUDIO.TXT
-rw-rw-rw-     0/0        1304    2535  51.4% -lh5- f91a Jan  8  2000 AMIHACK.TXT
-rw-rw-rw-     0/0       24390   72885  33.5% -lh5- 2ff5 Aug 21  1991 BLITTER.TXT
-rw-rw-rw-     0/0          72     196  36.7% -lh5- 618c Aug  3  2000 aminet-readme.txt
-rw-rw-rw-     0/0       10445   28963  36.1% -lh5- 2b9c Aug 21  1991 CIA.TXT
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        23 files  246163  712397  34.6%            Oct  2  2001