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/* Block Diagram */
[[File:A500-block-diagram.jpg|1000px]]
'''Agnus''' is the core chip in the system, managing all access to chip RAM for the 68000 processor and other custom chips through a complex priority system. It includes the '''Blitter''', which enables fast memory data transfers without processor involvement, and the '''Copper''', a video-synchronized co-processor.
'''Denise''' serves as the primary video processor, handling a display of 320 or 640 pixels wide by 200 (NTSC) or 256 (PAL) pixels tall without overscan. It supports interlacing for doubled vertical resolution, though this causes flickering on older monitors. Denise uses planar bitmap graphics with one to five bitplanes for 2 to 32 colors from a 4096-color palette, plus a sixth bitplane for special modes like Halfbrite and Hold-And-Modify (HAM). It also manages eight sprites, single-pixel scrolling, "dual-playfield" mode, and processes mouse and digital joystick inputs.
'''Paula''' is the audio chip, featuring four hardware-mixed 8-bit PCM sound channels with 65 volume levels and sample rates ranging from 20 to nearly 29,000 samples per second. Beyond audio, Paula manages interrupts, floppy disk drive, serial port, and analog joystick inputs, along with other I/O tasks.
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