Commodore Amiga 1200

Picture of an A1200 showing Workbench 3.0 connected to a Microvitec 1438 monitor

Picture of Rev 1A Motherboard

A1200 Revision 1A Motherboard (1204x616)
A1200 Revision 1B Motherboard (1226x622)
A1200 Revision 1D1 Motherboard (1415 x 2790)
A1200 Revision 1D3 Motherboard (1816 x 902)
A1200 Revision 1D4 Motherboard (3199x1588)
A1200 Revision 2B Motherboard (1206x620)


NOTE: These specifications apply to the A1200 made by Commodore and do not necessarily apply to the A1200 made by Amiga Technologies.

Processor 020@14Mhz (on motherboard)
MMU None
FPU None
(Some are rumoured to have been shipped in the US with 68882's but this is unlikely)
Battery Backed-Up Clock No
Chipset AGA
Standard CHIP RAM 2MB
Motherboard RAM Sockets None
Floppy Drive Double Density (880K) Drive
Motherboard Hard Drive Controllers Unbuffered 2.5" IDE Interface (can be converted for use with 3.5" devices)
External Connectors Video (RGB)
Audio Left
Audio Right
RF Connector for TV
External Floppy
Expansion Slots 1 x PCMCIA Type-II Card Slot
1 x Trapdoor expansion slot
Drivebays 1 x Floppy Drive Bay
1 x 2.5" Drive Cradle
Kickstarts KS 3.0 (two 40pin chips)
(KS 3.1 is available as an upgrade)
Bus Controller Budgie
Motherboard Revisions Rev 0 (Engineering Prototype)
Rev 1 (Advanced engineering prototype)
Rev 1A (Initial Release)
Rev 1B
Rev 1D.4 (Budgie Rev -01 Release, E123C and E125C have been removed from motherboard)
Rev 1D.4 (Budgie Rev -02 Release, additionally XR358 470Ohm resistor removed, 470Ohm resistor added to pin 43 of Alice)
Rev 2B (Both budgie Rev -01 and Rev-02 were used. In addition to the changes in 1D.4 Resistor 118 was changed from 470Ohm to 220Ohm)
Standard Case Type Computer in a keyboard

The A1200 was considered the baby brother of the A4000 and was a very popular low-end machine of the early 1990's and is still popular among Amiga users today. It's probably the most common Amiga model still in regular use in vastly expanded forms. The A1200 came with a very poorly rated power supply (only 23w) so it was common practice to purchase third party power supplies or even use A500 power supplies (they are compatible) which have a higher wattage (65w?) because ven a slightly expanded A1200 would often suffer from power problems. For additional information, please see the Amiga Technologies A1200.

A1200 Schematics

PAGE 1 = Jumpers, Connectors, Signals, Revision History
PAGE 2 = Processor and Custom Chip Interfaces and Signals
PAGE 3 = Budgie and DRAM Interface
PAGE 4 = Lisa and Video DAC Interface
PAGE 5 = Paula, Audio Filters and Mouse and Joystick Interfaces
PAGE 6 = Video and Audio Decoupling
PAGE 7 = CIAs (VIAs) RS232 and Parallel Port Interface
PAGE 8 = Floppy Controller and Gayle Schematics
PAGE 9 = Keyboard MPU
PAGE 10 = 16bit, 32bit, RTC and Optional Flash Memory Schematics
PAGE 11 = Gayle and Memory Card
PAGE 12 = Memory Expansion and IDE Controller
PAGE 13 = Expansion Connector, Power Input, Termination and Test Access
PAGE 14 = Gayle Schematic
PAGE 15 = Alice Schematic
PAGE 16 = Lisa Schematic
PAGE 17 = A1200 System Block Diagram
All files in the archive are standard IFF ILBM Images
Download A1200 Schematics
Thanks to Jaroslaw Kunert

Thanks to Holger Hesselbarth, Greg Scott, Marius Lauritzen, Dr Spackel, NicDouille and Ian Stedman