Hello.
After reading some lines on the net I decided to post my question here although the subject itself is an Apple one. Today I got myself some NuBUS stuff: as already mentioned a graphics card from Apple was included, NuBUS based and - that´s why I´m posting it here - with a 13W3 port.
The lines I read said, that Apple and NeXT were the only companies using NuBUS - but I can´t remember any NeXT machine using that slot. Is it true?
I´m very astonished that Apple once built taht large card along with that SGI / SUN / NeXT video port. Can anybody tell me anything about it? Never seen that before. Or was it used by NeXT?
Thanks
J
Quote from: "Jenne"After reading some lines on the net I decided to post my question here although the subject itself is an Apple one. Today I got myself some NuBUS stuff: as already mentioned a graphics card from Apple was included, NuBUS based and - that´s why I´m posting it here - with a 13W3 port.
Can you post a picture of that card, please?
QuoteThe lines I read said, that Apple and NeXT were the only companies using NuBUS - but I can´t remember any NeXT machine using that slot. Is it true?
Well, to be precise, Texas Instruments also used NuBus in their TI1500 68k-based servers and Explorer LISP machines. All NeXT Cubes have NuBus slots - albeit using a different physical format for the cards and a higher NuBus frequency compared to NuBus Macs IIRC.
QuoteI´m very astonished that Apple once built taht large card along with that SGI / SUN / NeXT video port. Can anybody tell me anything about it? Never seen that before. Or was it used by NeXT?
Are you sure it really is an Apple-manufactured card? There were many third-party products for NuBus Macs, e.g. made by Radius or Formac. Those companies also offered high-end color monitors (usually rebranded Sony Trinitrons), so a 13W3 connector seems quite possible.
The only NuBus video card for NeXTs I'm aware of is the Dimension.
-- cuby
For info on the card, check here:
http://www.applefritter.com/taxonomy/term/120,128 (NuBus Mafia) - Is this it?
http://www.applefritter.com/node/2159?res=800x600AFAIK, the Cube's backplane is NuBus (IEEE 1196). NuBus cares not about what system it's running on, it talks to the NuBus controller directly, but NeXT changed the pinout from Apple's/TI's implementation for the Cube. (IIRC)
Quote
Abstract: A simple, high-performance (37.5 Mbyte/s) backplane bus that provides the functions required by multiprocessor systems is defined. NuBus is a synchronous (10 MHz), multiplexed, multimaster bus that provides a fair arbitration mechanism. The logical, electrical, and physical interface standard for circuit boards that allows them to connect to and communicate over a backplane, as well as the backplane environment that must be provided to these boards, is described and specified. The protocol specification covers signal determinacy, bus cycles, transactions, block transfers, attention cycles, arbitration, address space, and utility functions. The physical specification covers timing, dc and ac specifications for signals, backplane (signal) characteristics, voltage and mechanical specifications for triple-height modules. Compliance requirements are stated. Concepts required for a general understanding of the NuBus specification, covering bus lines and bus operation, are included. This document also contains ANSI/IEEE Std 1101-1987, IEEE Standard for Mechanical Core Specifications for Microcomputers.
Thanks, iTomato, it seems to be the right one. In the menatime I found a bit more about that card:
http://www.forcedperfect.net/hardware/cards/workstationportraitcard/Seems to me that this card is limited to these Apple portrait screens...
J