1 A500 motherboard, revision 5 (B52 / Rock Lobster)
2 A500 motherboard, the (in)famous Motorola 68000 CPU running at 7.14MHz.
3 Some of the more important custom chips. Fat Agnus (Blitter, Copper, Chip RAM etc) Paula (Sound, Floppy controller, Serial port), Gary ("Glue Logic", bus control etc)
4 The Denise chip. This is the main video processor in the OCS chipset.
5 Odd and Even CIA chips. The control various task such as Keyuboard, joystick, floppy, parallel port etc. Both chips are identical but assigned to perform different tasks.
6 Overview of Amiga 500 rev 5 motherboard. (The Fat Agnus chip in the middle has been removed in this shot.)
7 Overview of the main chips that made the Amiga 500 into that great, nicely balanced machine it was back in the 80s. (Fat Agnus chip missing here).
9 The back-plate of the A500. The expansions are (from left to right) 2x Joystick /mouse, Left/Right Audio, Disk Drive, Serial Port, Parallel Port, Power Connector R GB Video and Mono Sound.
10 The side expansion port. Typically, the harddrives would connect here in a side-cart. Other expansions such as accelerators and FastRAM expansions were possible too.
11 The trapdoor expansion used to expand the memory (RAM). Different "hacks" are possible. By using a Fatter Agnus chip and some soldering and cutting, a 512kB FastRAM expansion can be turned into ChipRAM.
12 A Fatter Agnus. This version of Angus (8372A) comes from an A500+ but wht a fairly easy hardware mod, it's possible to upgrade an A500 (rev 5 in this case) to use 1MB ChipRAM like the A500+. One of the steps is to upgrade the Angus chip (from the original 8371). The red piece of tape isolates the pin that triggers NTSC mode by default and I want PAL. (hopefully it wont melt ;-)
13 A500 motherboard, 68000 CPU removed from its socket. (The green wire on the chip to the right is a small hack to make the 2.05 ROM chips work in an A500)