File:NeXTcube motherboard.jpg

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Summary
DescriptionNeXTcube motherboard.jpg |
English: NeXTcube motherboard (1990) with Motorola 68040 microprocessor at 25 MHz and Motorola digital signal processor 56001 at 25 MHz. The descriptions of the integrated circuits as provided in the annotations to the image are partly from https://github.com/jsdf/previous/blob/master/src/ioMemTabNEXT.c. More details on the chips and also connectors can be found in the hardware manual on p. 21 The British computer scientist en:Tim Berners-Lee used this model to develop all components of the World Wide Web at the research center CERN in Geneva about 1990. On it, he designed HTTP, HTML, the first web browser named worldwideweb, and the first web server. |
Date | |
Source | Own work |
Author | Autopilot |
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Annotations InfoField | This image is annotated: View the annotations at Commons |
CPU Motorola 68040 25 MHz incl. FPU, with mounted heatsink
CPU Motorola 68040 25 MHz inkl. FPU, mit aufgesetztem Kühlkörper
Digital Signal Processor (DSP) Motorola 56001 mit 25 MHz
Digitaler Signalprozessor (DSP) Motorola 56001 at 25 MHz
16 Banks of DRAM SIMM modules (100 ns), max. 4 MByte x 16 = 64 MByte. Minimum was 8 MByte.
16 Speicherbänke DRAM-Arbeitsspeicher für SIMM-Module (100 ns), max. 16 x 4 MByte = 64 MByte. Minimum waren 8 MByte.
Ethernet connector 10Base-T RJ-45 (Twisted pair)
Ethernetbuchse RJ-45 10Base-T (Twisted pair)
Ethernet connector 10Base2 coaxial/BNC (Thin Ethernet)
Ethernetanschluss 10Base2 koaxial/BNC (Thin Ethernet)
Proprietary connector for NeXT laser printer
Proprietärer Anschluss für den NeXT Laserdrucker
SCSI2 connector for peripherals
SCSI2-Anschluss für Peripheriegeräte
Two RS-423 serial interfaces with miniDIN-8 sockets for modem, fax, etc.
Zwei serielle RS-423-Schnittstellen mit miniDIN-8-Buchsen für Modem, Fax, etc.
Interface connector for the internal digital signal processor 56001
Interface zum internen digitalen Signalprozessor 56001
Connector for the grayscale monitor
Monitoranschluss für Graustufenmonitor
ASIC manufactured by VLSI for NeXT, as a driver chip for the system bus NeXTbus (left)
Von VLSI für NeXT produzierter ASIC als Bustreiber-Chip für den NeXTbus (interner Systembus) links daneben
100 MHz quartz for system clock generation
100-MHz-Quarz zur Erzeugung des Systemtakts
3 V Lithium Battery
3 V Lithium-Batterie
128 KByte BIOS PROM Chip
BIOS-PROM-Chip mit 128 KByte
DSP 768k memory expansion socket for one SIMM module
DSP-768k-Speichererweiterungs-Steckplatz für 1 SIMM-Modul
Magneto-Optical Drive Controller (Fujitsu MB600310)
(source: https://github.com/jsdf/previous/blob/master/src/ioMemTabNEXT.c)
DMA Controller (Fujitsu MB610313)
(source: https://github.com/jsdf/previous/blob/master/src/ioMemTabNEXT.c)
SCSI Controller (NCR53C90)
(source: https://github.com/jsdf/previous/blob/master/src/ioMemTabNEXT.c)
Floppy Controller (Intel 82077AA)
(source: https://github.com/jsdf/previous/blob/master/src/ioMemTabNEXT.c)
Serial Communication Controller (AMD Z8530H)
(source: https://github.com/jsdf/previous/blob/master/src/ioMemTabNEXT.c)
256 kByte Dual ported RAM as Video RAM (VRAM) in 8 Modules:
8 x CMOS DRAM Mitsubishi M5M4C264-L (120 ns)
(each 4 x 64 kBit = 256 kBit)
source for function of these ICs: http://www.nextcomputers.org/NeXTfiles/Docs/Hardware/NeXTServiceManualPages1-160_OCR.pdf
source for IC type not visible here: pic of identical NeXTcube of Tim Berners-Lee at CERN, see https://cds.cern.ch/record/1547556/files/DSC_0142.JPG
datasheet of DRAM: http://bitsavers.trailing-edge.com/components/mitsubishi/_dataBooks/1987_Mitsubishi_IC_Memories.pdf , pages 1-3 and 1-13
RAMDAC for the output to the analog monitor, with mounted passive heat sink
RAMDAC für den Monitorausgang, mit aufgesetztem passivem Kühlkörper
Internal bus connector (NeXTbus)
Anschluss zum internen Bus (NeXTbus)
Internal Floppy Drive Connector
Interner Anschluss für Diskettenlaufwerk
Internal Optical Drive Connector (20 pin)
Anschluss (20 Pins) für das interne magneto-optische Laufwerk
Internal SCSI Connector (50 pin)
Interner SCSI-Anschluss (50 Pins)
Captions
Items portrayed in this file
depicts
20 April 2015
0.02 second
5.6
22 millimetre
800
image/jpeg
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:08, 22 September 2021 | ![]() | 3,371 × 3,310 (4.87 MB) | wikimediacommons>Pittigrilli | corrected perspective, cropped, improved colours |
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Camera manufacturer | Canon |
---|---|
Camera model | Canon EOS M |
Exposure time | 1/50 sec (0.02) |
F Number | f/5.6 |
ISO speed rating | 800 |
Date and time of data generation | 14:14, 20 April 2015 |
Lens focal length | 22 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | iPhoto 9.5.1 |
File change date and time | 14:14, 20 April 2015 |
Exposure Program | Aperture priority |
Exif version | 2.3 |
Date and time of digitizing | 14:14, 20 April 2015 |
Meaning of each component |
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APEX shutter speed | 5.625 |
APEX aperture | 5 |
APEX exposure bias | 0 |
Maximum land aperture | 2 APEX (f/2) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 20 |
DateTimeOriginal subseconds | 20 |
DateTimeDigitized subseconds | 20 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 5,798.6571428571 |
Focal plane Y resolution | 5,788.9444444444 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Serial number of camera | 022152200291 |
Lens used | Canon EF-M 22mm f/2 STM |
Special instructions | hyxBHKzDTby+C3B8cKmJJg |
IIM version | 2 |