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Last modified 2012-08-06

Commodore Amiga 500 "A500" (Code name "Rock Lobster")

SPECIFICATIONS
Type:16/32-bit home computer
CPU:Motorola MC68000 @ 7.09 MHz (PAL), 7.16 MHz (NTSC). Upgradeable.
Operating system:AmigaOS 1.2 or 1.3 and Workbench 1.2 or 1.3
Memory:ROM: 256 KB, Kickstart 1.2 or 1.3 (Some late 500:s did have 512 KB ROM and version 2.04)
RAM: 512 KB (Expandable to 8 MB or more)
Sound:Four hardware-mixed channels (two left and two right)
8-bit PCM @ sampling frequency up to 28 KHz.
Graphics:PAL:
320*256 pixels, 32 colors
640*256 pixels, 16 colors
640*512 pixels (interlace), ? colors
704*576 in overscan, ? colors
Palette: 4096 colors
NTSC:
320*200 pixels, 32 colors
640*200 pixels, 16 colors
640*400 pixels (interlace), ? colors
704*484 pixels in overscan, ? colors
Palette: 4096 colors
Storage:Integrated 3.5" floppy (880 KB) that can also read 720 KB IBM PC disks
Optional external floppy and hard drive
Input:Integrated keyboard
Mouse
Connectivity:2*game/mouse port
RS-232C
Printer/Centronics parallel
Stereo audio ouput
Floppy drive port (up to 3 extra drives)
Analog and digital RGB video out
Monochrome composit video out
Zorro II expansion bus
RAM expansion slot
Voltage:5 VDC, +12 VDC, -12 VDC (External PSU)
Power consumption:Max 4.5 A @ 5 VDC
Max 1 A @ 12 VDC
Max 100 mA @ -12 VDC
Dimensions (W*H*D):465*60*320 mm
Weight:? Kg (? lbs)
Manufactured:1987-1991 (Discontinued)
Other:The 2.04 version of Kickstart featured in the very last 500:s introduced compatibility
problems with some software. It was however possible to "downgrade" to earlier
Kickstart versions.

Custom chips:
Denise / Super Denise - OCS / ECS display encoder (depending on revision)
Fat Agnus - OCS / ECS display controller
Gary - System address decoder
Paula - Audio and I/O controller
Related documents:
Modifications:
Notable "ham" software: