Amiga 4000T
Advanced Graphics Architecture | |
| Sound | 4 channels, 8-bit resolution, 6-bit volume, stereo |
|---|---|
| Related | Amiga 4000 |
The Escom in 1995, after Commodore's demise, along with a new variant which featured a 50 MHz Motorola 68060 CPU. Despite the subsequent demise of Escom, production was continued by QuikPak in North America into at least 1998.[1]
Technical details
The A4000T was the only Amiga ever to have both
CPU
, audio, video, and input-output ports all on separate daughterboards. This made the machine near-modular.
The machine was targeted as a high-end video
Zorro III slots, and 4 ISA
slots, and its case can accommodate up to six drives. Up to 16 MB of RAM can be installed on the motherboard, while additional RAM can be installed on some CPU boards (up to 128 MB), and yet more can be added on Zorro cards. For CPU upgrades, a 200-pin KEL socket is used.
Legacy and the end of "classic" Amiga line
This was the last computer to be released by
bezel on the case. The case itself was a re-purposed PC case which is evidenced by the presence of the Turbo button whose function in A4000T was to disable the internal speaker (as Amigas don't support the PC-specific speed reduction which was the button's original function). Amidst major distributors like SMG exiting the Amiga market,[4] Escom's bankruptcy in 1996, and further Amiga asset ownership changes, QuikPak continued to offer customized A4000T workstations equipped with and 68060 accelerators, and even showcased the tower Amigas during 1996 Summer Olympic Games in Atlanta.[5] Ultimately, however, Amiga 4000T and Amiga 1200 whose production was also continued by Escom, were the last Amigas of what has been later referred to as the "classic
" Amiga line.
A4000T motherboards were also sold separately for OEM use, an interesting example being HDI-1000, an ultrasound machine made by ACL (a company later acquired by Philips) which in addition to the A4000T motherboard used a custom-built 68060 accelerator, and custom software based on AmigaOS.[6]
Specifications
- CPU:
- Memory:
- Chipset: AGA(Advanced Graphics Architecture)
- Video:
- 24-bit color palette (16.8 Million colors)
- Up to 256 on-screen colors in indexed mode
- 262,144 on-screen colors in HAM-8mode
- Resolutions of up to 1280×512i(more with overscan)
- HSync rates of 15.60-31.44 kHz
- Audio (Paula):
- 4 hardware channels (Stereo)
- 8-bit resolution / 6-bit volume
- Maximum DMAsampling rate of 28-56 kHz (depending on video mode in use)
- Video:
- Removable Storage:
- 3.5" HD floppy disk drive, capacity 1.76 MB
- Internal Storage:
- 34-pin floppy connector
- 40-pin buffered ATA-Controller
- 50-pin fast SCSI-2
- Input/Output connections:
- Expansion Slots:
- Operating System:
- AmigaOS 3.1 (Kickstart 3.1/Workbench 3.1)
- Other Characteristics:
- 0 × front accessible 3.5" drive bays
- 5 × front accessible 5.25" drive bay
- 1 × internal 5.25" drive mountings
- Key lock (disables mouse and keyboard)
See also
References
- ^ "Quikpak A4000T - QuikPak". bigbookofamigahardware.com. Retrieved 2024-05-15.
- ^ "Commodore Amiga 4000T". Bboah.claunia.com. Retrieved 2018-09-04.
- ^ Hicks, Don (April 1996). "Interview with Petro Tyschtschenko". Amazing Computer Magazine.
- ^ "SMG Exits the Amiga Market". Retrieved September 20, 2023.
- ^ "Amiga Update". Amazing Computer Magazine. September 1996.
- ^ "TekMagic 4060T aka Ultrasound accelerator". jack-3d. Retrieved September 20, 2023.
External links
Wikimedia Commons has media related to Amiga 4000T.
- Ryan E. A. Czerwinski's Commodore Amiga 4000T page
- Commodore A4000T (Amiga History Guide)
- Amiga Technologies A4000T (Amiga History Guide)
- Famous Amiga Uses
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