PDP-1-X: Difference between revisions
From Computer History Wiki
Jump to navigationJump to search
→External links: Add links to paper tapes and DECtapes. |
m →See also: +PDP-1-X microtape format |
||
| Line 1: | Line 1: | ||
The '''PDP-1-X''' was a heavily modified [[PDP-1]] created at [[MIT]]'s [[RLE]]. | The '''PDP-1-X''' was a heavily modified [[PDP-1]] created at [[Massachusetts Institute of Technology|MIT]]'s [[Research Laboratory of Electronics|RLE]]. | ||
Notable differences are: | Notable differences are: | ||
| Line 7: | Line 7: | ||
* the addition of an [[index register]]; | * the addition of an [[index register]]; | ||
* an [[input/output|I/O]] [[bus]] for connection of [[peripheral]]s. | * an [[input/output|I/O]] [[bus]] for connection of [[peripheral]]s. | ||
==See also== | |||
* [[PDP-1-X Time Sharing System]] | |||
* [[PDP-1-X microtape format]] | |||
==External links== | ==External links== | ||
Revision as of 14:31, 7 April 2025
The PDP-1-X was a heavily modified PDP-1 created at MIT's RLE.
Notable differences are:
- the addition of operating modes to the CPU (to support time-sharing): 'TS Off', 'TS Debug', 'Exec' (used for the kernel), and 'User';
- additional instructions;
- the addition of an index register;
- an I/O bus for connection of peripherals.
See also
External links
- RLE PDP-1 - Original RLE PDP-1 documents
- Machine readable copies of paper tapes and DECtapes from MIT:
