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

A picture of Commodore Amiga 500 ''A500'' (Code name ''Rock Lobster'')

SPECIFICATIONS

GENERAL
Type:16/32-bit home computer
CPU:Motorola MC68000 @ 7.09 MHz (PAL) or 7.16 MHz (NTSC)
Operating system(s):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)
Power supply:5 VDC, +12 VDC, -12 VDC (5-pin jack. External PSU)
Current drain / 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 (18.3*2.4*12.6")
Weight:? Kg (? lb)




I/O
Keyboard:Integrated
Graphics: Text
60 and 80 columns
PAL:
320*256 pixels, 32 colors
640*256 pixels, 16 colors
640*512 pixels (Interlaced), ? colors
704*576 in overscan, ? colors
Palette: 4096 colors
NTSC:
320*200 pixels, 32 colors
640*200 pixels, 16 colors
640*400 pixels (Interlaced), ? colors
704*484 pixels in overscan, ? colors
Palette: 4096 colors
Audio: Four hardware-mixed channels (two left and two right)
8-bit PCM @ sampling frequency up to 28 KHz s
Storage: Integrated 3.5" floppy (880 KB) that can also read 720 KB IBM PC disks
Optional external floppy and hard drive
External I/O ports:
Analog and digital RGB video:   DB-23p
Monochrome composit video:   Phono/RCA
Floppy I/O (Up to 3 extra drives):   DB-23s
Printer/parallel:   DB-25s
RS-232C:   DB-25p
Game/mouse ports:   Two DE-9p (DB-9m)
Stereo audio:   Two Phono/RCA
Other: Zorro II expansion bus
RAM expansion slot




MISCELLANEOUS
Manufactured:1987-1991 (Discontinued)
Additional info: 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: A500 user manual v1987 (38 MB)
A500 & A500 Plus user manual v1991 (8 MB)
A500 service manual v1987 (14 MB)
Modifications and fixes:
Notable "ham" software:
Reviews:Elektronikvärlden: #1/2, february 1988, page 20
Options / Accessories:
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A picture of Commodore Amiga 500 ''A500'' (Code name ''Rock Lobster'') motherboard
A rear picture of Commodore Amiga 500 ''A500'' (Code name ''Rock Lobster'')