Amiga 4000
The Amiga 4000 , a desktop computer, was a technical further development of the Amiga 3000 and was introduced at the end of 1992. There were different versions of the calculator. Initially, a 25 MHz processor, the Motorola 68040 , was part of the basic equipment. A little later "economy versions" followed with a 25 MHz 68030 (this model was then named Amiga 4000 / EC30) and a 68LC040. Even an Amiga 4000 with a 68060 processor was planned; this model with the designation Amiga 4000/060 was no longer delivered in Germany. In the USA, Quikpak, the USA distributor of Amiga Inc. , also delivered the Amiga 4000T with a 68060, but no longer in Europe because of the renewed bankruptcy.
The big innovation of the Amiga 4000 was the new graphics chipset AGA (called AA in Germany), which was a significant step forward compared to the ECS chipset of the previous model.
The Amiga 4000T (in a tower case ) appeared in 1993 and was the last model that Commodore was able to bring onto the market before it was liquidated. Only 200 copies are said to have been delivered at that time. Amiga Technologies later reissued the Amiga 4000T almost unchanged.
Technical Equipment
- CPU : Motorola 68EC030 (without MMU , without FPU) with 25 MHz, 68LC040 (with MMU, without FPU) with 25 MHz or 68040 (with MMU, with FPU)
- FPU : largely integrated in the 68040, missing commands via software
- Bus : 25 MHz
- RAM: 2 to 18 MB on board (2 MB chip RAM and up to 16 MB additional RAM); upgradeable to 128 MB via CPU slot and 512 MB via Zorro III slot
- ROM : 0.5MB Kickstart ROM
- Chipset : AGA (called AA in Germany)
- Graphics: 24-bit color palette (16.8 million colors), up to 256 colors in indexed mode, 262,144 colors in HAM-8 mode, resolutions: 320 × 200 to 1280 × 400 interlaced (NTSC), 320 × 256 to 1280 × 512 interlaced (PAL), 640 × 480 (VGA), 800 × 600i, 1024 × 768i
- Audio: 4 × 8-bit PCM channels (2 stereo channels), 28 to a maximum of 56 kHz DMA sampling rate
- ATA interface (name = scsi.device), the SCSI interface has been deleted (but reinstalled on the A4000T)
- 3.5-inch HD floppy disk drive (Amiga format 1.76 MB, but only when the speed is halved, with the supplied driver compatible with 1.44 MB floppy disks that are common on PCs)
- internal 120 MB 3.5 inch IDE hard disk drive (upgradable)
- Optional flicker fixer for the use of the AGA ( PAL / NTSC ) -Customchips with a conventional VGA - Monitor
- internal Zorro -3 slots (comparable to PCI slots in the PC)
- Operating system: AmigaOS 3.0 ( Kickstart 3.0 / Workbench 3.0)
- In the later versions of the A4000 and the A4000T, the CPU was no longer soldered directly to the mainboard, but was on a separate processor board. This made it possible to easily change the CPU using turbo cards ; other providers also offered dual CPU boards with a PowerPC and a 68040 or 68060 processor (see PowerUP ).
The onboard RAM memory of 2 MB ( chip RAM for the AGA custom chips and the CPU, in the first board version also as a PS2 plug-in module, later soldered) can be increased by a maximum of 16 with 4 PS2 modules of 4 MB each MB Fast-RAM (only for the CPU) can be expanded.
With Zorro-3 plug-in cards, the RAM can theoretically be expanded up to 2 GB, but in practice there were only expansion cards with a maximum of 256 MB memory. In the four existing Zorro slots, when four such cards were fitted, an enormous RAM expansion of 1 GB was possible for the time.
Model executions
- Amiga 4000 in a desktop case with AmigaOS 3.0 and only IDE interface.
- Amiga 4000T (Commodore) in a tower case with AmigaOS 3.1 and additional SCSI -II interface.
- Amiga 4000T (ESCOM) in the modified tower case with AmigaOS 3.1 and additional SCSI interface.
Web links
- Repair information on various Amiga models and ELKO parts lists
- AmigaOS 3.0
- Amiga 4000 in the Amiga Hardware Database
- Amiga family: A4000 on amigawiki.de
Individual evidence
- ↑ PDF: A4000 User's Guide ( Memento of the original from September 19, 2017 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Technical Specifications, Appendix A, 1992 (English)
