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Revision A / B Boards - 1987
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CPU: Motorola 68000 (7.16 MHz NTSC, 7.09 MHz PAL) The CPU can be upgraded with CPU cards |
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Chipset: OCS (Original Chipset) |
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Audio (Paula):
4 voices / 2 channels (Stereo)
8-bit resolution / 6-bit Volume
28 kHz sampling rate
70 dB S/N Ratio |
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Video (Common resolutions):
320×200/256 with 32 colors, 64 colors in Halfbrite or 4096 in HAM-6
640×400/512i with 16 colors |
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Battery-backed clock |
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Memory:
256 Kb ROM for Kickstart code.
512 Kb (Max) / (1 Mb Max) of Chip RAM.
512 Kb Fast RAM in MMU slot / Soldered on motherboard. Practical upper limit of about 9 Mb of Fast RAM memory due to being limited to an 24-bit address bus. |
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Storage:
3.5" DD Floppy drive, capacity 880 Kb
SCSI Hard drive in A2000HD systems. |
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Input/Output connections:
Composite TV out (Black & White)
Analogue RGB video plug (Male DB23)
RCA audio plugs
2 x Game/Joy/Mouse ports (Male DE9)
Keyboard port (5 pin DIN)
RS232 Serial port (Male DB25)
Centronics Parallel port (Female DB25)
Port for external floppy drive (Female DB23) |
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Internal connectors:
5 Zorro II slots (16-bit, AutoConfig)
2 16-bit ISA slots (Inactive per default, only usable with a PC emulation Bridgeboard or bus bridge installed)
2 8-bit ISA slots (also inactive, some models could be fitted with extension edge connectors, upgrading these slots to 16 bits)
1 32 Pin Internal floppy connector
1 MMU / CPU Slot
1 Genlock video connector |
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Casing:
204 Watt switching power supply
2 x 3.5" drive bays for 3.5" floppy drives or other Peripherals
1 x 5.25" drive bay for 5.25" floppy drive or other peripherals |
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Software (Bundled):
AmigaOS 1.2 / 1.3 operation system.
Kickstart 1.2 / 1.3 (In ROM)
Voice synthesis library |
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Revision C Motherboard - 1991 (
Also known as the A2000+ it is for the most part identical to its forerunner.) |
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Chipset: ECS (Enhanced Chip Set)
Video (New resolutions):
640×480 with 4 colors (Productivity)
800×600i with 2 colors (Super72) |
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Memory:
512 Kb ROM for Kickstart code.
1 Mb of Chip RAM (2 Mb Max) |
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Software (Bundled):
AmigaOS 2.0 operation system. (Kickstart 2.0/Workbench 2.0) |
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Commodore UK sold a variant of the A2000, the A1500. The A1500 shipped with dual floppy drives, and 1MB of RAM as standard, along with the ECS chipset and Amiga OS 2.04. |
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