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SGI Indigos (not Indigo^2) were SGI's own GIO32 bus, not VME. Early Alphastations were assuredly not VME! They were DEC's own Turbochannel.
by pinewurst 1y ago
SGI Indigos (not Indigo^2) were SGI's own GIO32 bus, not VME.
Early Alphastations were assuredly not VME! They were DEC's own Turbochannel.
- linksnapzz 1y ago...and Turbochannel was originally the bus for the MIPS R3000-based Ultrix workstations; the Alpha firmware needed to be able to interpret MIPS machine code to speak to TC expansion cards. Somewhere, I have a Turbochannel FDDI card taken from an AlphaStation 3000-an obsolete I/O adapter for a forgotten network protocol, running on a defunct CPU, with firmware written in the native language of an even more defunct CPU.
- eschaton 1y agoYou can get a TURBOchannel adapter for the VAXstation 4000/60 or /90 and it also has a MIPS emulator for running TURBOchannel card ROMs.
- hapless 1y agoIndigo R3000 was VME-based, a derivative of the 4D/35 and firends Indigo R4xxx was a completely different architecture shared with the later SGI Indy Both had GIO32 slots Same case, same slots, totally different architectures inside