| Name | Amiga 1000 |
| Codename | 'Lorraine' (the 128K prototype's codename) |
| Made by | Commodore AMIGA Inc. |
| Released | - Winter CES 1984, Chicago
- this particular machine was produced in 1986, as indicated by the chips' production dates
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| Serial-No. | |
| Board-Info | |
| CPU | Rockwell R68000P8- an OEM-manufactured version of Motorola's MC68000
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| Speed | 7.09379 MHz (PAL)/ 7.15909 MHz (NTSC) |
| RAM | MOS 8367R0 'PAL Agnus'- 512 KBytes RAM onboard:
- 10 pcs. Hitachi HM50464P-15 (64Kx4)
- 6 pcs. NEC D41464C-15 (64Kx4)
- 256 KB are utilizied as ChipRAM, the other 256 KB as WOM (see 'ROM')
- additional 256 KB ChipRAM via A1050 'memory expansion cartridge'
- machines with MOS 8367 are expandable to 8.5 MBytes: 512 KB Chip- and 8192 KB FastRAM
- MOS 8367 is a PAL-version; the NTSC-version is MOS 8361
- The Amiga's RAM is divided into the slower 'Chip-RAM' (which the special chips can access) and 'Fast-RAM' (CPU-access only)
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| ROM/ Native OS | C252179-01/ C252180-01 'A1000 OS ROMs'- Kickstart 1.0, 1.1 or 1.2 from disk
- AmigaDOS 1.0, 1.1 or 1.2
- there was no Kickstart-ROM like in the later machines. Instead, the A1000's OS ROMs contain a bootstrap-code that loads the Kickstart from disk before loading Workbench, storing it in the so-called 'WOM' ('write once memory', 256 KBytes RAM that take the Kickstart and are then protected from overwriting)
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| Keyboard/ Layout | 91 keys/ german (QWERTZ) layout
MOS 6570 keyboard-controller- keyboard is connected to the machine with via RJ11 connector
- it fits exactly below the machine (e.g. when not in use)
- it's a relabeled French/ Belgian-version in this case, where 'stickers' with the german special characters were put on the keycaps (also see the keyboard overview)
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| Graphics | MOS 8362R6 'Denise'
'Blitter' (filling ops & memory block moves), integrated in Agnus
'Copper' (graphic coprocessor, supports CPU in graphic ops and controls the Blitter)- Pre-defined screen modes:
- 'LowRes': 320x256 (50Hz PAL)/ 320x200 (60Hz NTSC)
- 'HighRes': 640x256 (50Hz PAL)/ 640x200 (60Hz NTSC)
- all modes can also be interlaced, doubling vertical resolution
- horizontal scan rate: 15.6kHz
- Simultaneous colors (from a 4.096-palette):
- 4 (2 bitplanes) in all resolutions
- 16 (4 bitplanes) in HighRes
- 32 (5 bitplanes) in LowRes
- 64 (6 bitplanes) in LowRes ('Halfbright')
- 4.096 in LowRes-HAM6 mode ('Hold-and-modify', 6 bit/pixel)
- Text: 60x25 or 80x25 (no 'real' text-mode, it's graphics)
- Note that this was later called 'Original Chip Set' graphics (OCS), after the 'Enhanced Chip Set' (ECS) had been introduced
- Note also that some earlier revisions of Denise didn't have the 'Halfbright' mode
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| Sound | MOS 8364R4 'Paula'- 4 independant hardware sound channels, each including an 8 bit DAC
- can be combined to 2 channels stereo
- frequency- and amplitude-modulation, low-pass filter
- complex sound effects can easily be programmed
- Paula also has registers for floppy control
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| Media | MATSUSHITA JU-363-03 integrated diskdrive- 3.5" disks, 880 KBytes/ disk
- external drives like the A1010 via diskdrive connector
- 5.25" disks, 360 KBytes for PC-DD-compatibility (A1020 drive)
- XT-, later AT-Bus (IDE) and SCSI-harddisks via 3rd party expansion
- later: 3.5" 1.76MB Amiga-HD-drives (compatible with PC-HD 1.44MB. Required at least Kickstart 2.0)
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| Input/ Output | 2x CBM 8520R3 'CIA' (Interface I/O, timers, floppy disk I/O)
Motorola MC1488P + MC1489N (RS232)- 85 pin male edge conn. expansion bus (e.g. for harddisks, CBM 1060 etc.)
- 60 pin male edge conn. RAM expansion slot (for A1050 RAM-expansion)
- 2x 9 pin SUB-D mouse/ joystick/ paddles
- modular RJ11 connector ('Western') for keyboard
- 25 pin SUB-D parallel (required a special cable because of an additional 5V-pin)
- 25 pin SUB-D external diskdrive
- 25 pin 'RS232' serial SUB-D
- stereo cinch-out
- 23 pin SUB-D RGB jack, capable of
- analog RGB (= full range of 4.096 colors)
- digital RGBI (= 16 color combinations only)
- 8 pin round-DIN TV-modulator out
- monchrome composite video jack
- standard input for a powercord (=internal PSU)
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| Miscellaneous | - The Amiga 1000 was the first homecomputer with preemptive multitasking in combination with a comfortable GUI and working 'Plug&Play' (called 'AutoConfig protocol')
- There are at least three major board revisions known:
- 'early board', with a daughterboard mounted pickaback the mainboard ('piggyback'). Has color composite video output
- 'improved board', with 'piggyback' logic integrated in the mainboard
- 'later board'. Like 'improved', but monochrome composite video only (perhaps only true for PAL-machines?)
This particular machine's got the later board.
However, information on the different board revisions (e.g. exact differences or about early, PAL-modified NTSC boards) is scarce
- The first version board with oldest Agnus would only address 256 KB ChipRAM (=RAM where the Amigas store graphics and sound-data enabling direct access to it for the special-ICs Paula, Denise and Agnus), so RAM was limited to 8.25 MB
- As you can see in the above picture, this A1000 bears the Commodore logo. This was true for all later machines and those sold in Europe, because Commodore wanted to establish the Amiga as a professional workstation - and in Europe, Commodore Business Machines was already a well-known brand. Early machines (mostly NTSC & sold in the US) lack that label
- There was the A1060 ('Sidecar'), which made the A1000 fully XT-compatible and plugged into the side expansion slot. It was a stripped-down PC-10 board and a 5.25" diskdrive, sharing the Amiga-monitor, mouse and keyboard
- Most A1000 have the development-team's signatures imprinted in the case (even Jay Miner's dog, Mitchie, has 'signed' with its paw). However, it is said that there are also machines without (maybe in order to reduce production cost), which are much rarer than those with signatures...
- Some members of the team (namely Dale Luck and R.J.Mical) were called 'dancing fools' because they worked all night and kept themselves awake with dancing
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