Technical information Amiga 4000

1 technical information

1.1 processor , ram
1.2 a4000-cr version
1.3 graphics , sound
1.4 peripherals , expansion
1.5 operating system
1.6 specifications

technical information
processor , ram

the stock a4000 shipped either motorola 68ec030 or 68040 cpu, 2 mb of amiga chip ram , 16 mb of additional ram in 32-bit simms. there non-functional jumper intended expand chip ram 8mb. later, third-party developers created various cpu expansion boards featuring higher rated 68040, 68060 , powerpc cpus. such hardware typically offers faster , higher capacity ram (128 mb or greater).

a4000-cr version

unlike previous amiga models, a4000 machines have cpu mounted in expansion board; motherboard not have integrated cpu. later revisions of a4000 have cpu , 2 mb ram surface-mounted on motherboard in effort reduce costs. these machines known a4000-cr (cost-reduced) , surface-mounted cpu 68ec030. cost-reduced models make use of non-rechargeable lithium battery real-time clock battery backup rather rechargeable nicd battery. nicd backup battery 1 of common causes of problems in aging device uses 1 because has tendency leak. released fluids corrosive , can damage circuitry.

graphics , sound

the a4000 first amiga model have shipped commodore s third-generation amiga chipset, 32-bit advanced graphics architecture (aga). name implies, aga introduces improved graphical abilities, specifically, palette expanded 12-bit color depth (4096 colors) 24-bit (16.8 million colors) , new 128, 256 , 262,144 (ham-8) color modes. unlike earlier amiga chipsets, color modes available @ display resolutions. aga improves sprite capacity , graphics performance. on-board sound hardware remains identical of original amiga chipset (the paula sound chip), namely, 4 dma-driven 8-bit pcm channels, 2 channels left speaker , 2 right.

peripherals , expansion

the a4000 has number of amiga-specific connectors including 2 de-9 ports joysticks, mice, , light pens, standard 25-pin rs-232 serial port , 25-pin centronics parallel port. result, @ launch a4000 compatible many existing amiga peripherals, such as, midi devices, serial modems , sound samplers.

like just-earlier amiga model, 3000, a4000 has 4 internal 32-bit zorro iii expansion slots. expansion bus allows use of devices comply autoconfig standard, such graphic cards, audio cards, network cards, scsi controllers, , later usb controllers. 1 of notable hardware items of era newtek video toaster system became popular in 1990s amateur , commercial desktop video production of standard-definition broadcast quality video, consisting of tools video switching, chroma keying, character generation, animation, , image manipulation.

the 3 isa slots can activated use of bridgeboard, connects zorro , isa buses. such bridgeboards typically feature on-board ibm-pc-compatible hardware, including intel 80286, 80386, or 80486 microprocessors allowing emulation of entire ibm-pc system in hardware. compatible isa cards may installed 2 remaining isa slots.

later, in effort offer modern expansion options third-party developers created replacement expansion boards a4000 provide pci slots allowing use of higher performance , available pci hardware, such graphic, sound, , network cards.

operating system

the a4000 shipped amigaos 3.0, consisting of workbench 3.0 , kickstart 3.0, provide single-user multi-tasking operating system , support built-in hardware. following release of amigaos 3.1 became possible upgrade a4000 installing compatible kickstart 3.1 rom chips. later amigaos 3.5 , 3.9 releases software-only updates requiring kickstart 3.1.

amigaos 4, powerpc-native release of operating system, can used a4000 provided cyberstorm ppc board installed. likewise, morphos, alternative amiga-compatible operating system, can used hardware.

variants of platform-independent operating systems such linux , bsd can used a4000.

amiga 4000 case open



amiga a3200/a3400 cpu card


specifications