Difference between revisions of "Interdata"
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* [[Interdata 7/32]] | * [[Interdata 7/32]] | ||
* [[Interdata 8/32]] | * [[Interdata 8/32]] | ||
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| + | Interdata documentation does not directly address the question of whether the 8/32 is upwardly compatible with the 7/32; they use the same [[instruction]] formats, and thus [[addressing mode]]s, though. ([[Operation code]]s are always 8 bits on both machines.) | ||
==External links== | ==External links== | ||
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** [http://bitsavers.org/pdf/interdata/periph/brochures/Selector_Channel_Brochure_197608.pdf Selector Channel] | ** [http://bitsavers.org/pdf/interdata/periph/brochures/Selector_Channel_Brochure_197608.pdf Selector Channel] | ||
| − | [[Category: Manufacturers]] | + | [[Category: Computer Manufacturers]] |
Latest revision as of 07:01, 21 January 2025
Interdata was a company which produced a line of minicomputers. They started with 16-bit machines, and added a 32-bit line; the latter were initially upward compatible with the former. They were later the Computer Systems Division of Perkin-Elmer, Inc.
Interdata machines supported several different buses, which were generally standardized and available across the line:
- the 'Multiplexor bus', which supported programmed I/O
- the ' Selector Channel bus', which supported DMA
The 32-bit machines are somewhat famous for being the first ISA after the PDP-11 to which UNIX was moved (they were, for a short period before the arrival of the VAX, the only 32-bit minicomputer).
16-bit machines
- Interdata Model 70
- Interdata Model 74
- Interdata Model 80
- Interdata Model 85
- Interdata 3
- Interdata 4
- Interdata 5/16
- Interdata 6/16
- Interdata 7/16
- Interdata 8/16
32-bit machines
Interdata documentation does not directly address the question of whether the 8/32 is upwardly compatible with the 7/32; they use the same instruction formats, and thus addressing modes, though. (Operation codes are always 8 bits on both machines.)
