amiga 500

release date:            1987-1988
	 cpu:            68000 at 7.14 mhz
	 fpu:            none
custom chips:            denise - 8362 denise, rev6.3+ had 8373 superdenise
			 paula - standard paula 
			 fat agnus - 8370 for rev3 and 5 motherboard (8372a in rev6 motherboard)
			 gary - fat gary

       video:            ocs or ecs (4096 colors)
  kickstarts:            1.2 then 1.3
	ram :            chip ram 512k on motherboard
			 512k in trapdoor expansion can be converted to chip ram by modification. 
			 fast ram none shipped with machine.
			 the 512k expansion in the trapdoor configures as fast ram but only runs as fast as chip ram due to the bus limitation. maximum autoconfiguring ram in this slot is 2.3 meg.

      drives:            internal 880k floppy
       slots:            1 - trapdoor type expansion
			 1 - zorro ii slot on side
       ports:            mouse & joystick
			 parallel
			 serial
			 15khz rgb video
			 external floppy
			 integrated keyboard
			 stereo rca audio jacks
			 black & white composite video output
motherboard revisions:   3.x avoid 
			 5 8370 agnus
			 6 8372a 1 meg agnus


possible expansions:     - 512k fast ram + clock module in trapdoor
			 - up to 8m fast ram
			 - hard drive with expansion modules
			 - 020,030,040 cpu and fpu with expansion modules
			 - kickstart 2.04+

note:  			 ecs models had pal and ntsc screenmodes