Timeline for When was the PDP-11/50 released?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 5, 2024 at 5:18 | vote | accept | cjs | ||
| Feb 5, 2024 at 0:49 | answer | added | Rick Smith | timeline score: 3 | |
| Feb 4, 2024 at 20:47 | comment | added | dave | This paper says a US Navy postgrad school acquired a couple of 11/50s in late 1974 and early 1975. | |
| Feb 4, 2024 at 19:20 | comment | added | dave | I checked my paper handbooks (circa 1976-1980) and the 11/45 and 11/55 appear together but nothing mentions the 11/50. I guess it had a short life. This tends to push the answer you're looking for towards 'earlier' rather than 'later' in the possible range. | |
| Feb 4, 2024 at 18:12 | comment | added | dave | The 1973 11/45 handbook does not mention 11/50 or 11/55, but does (section 2.5) mention availability of core, MOS, or bipolar memory. I remain confused about what the /50 and /55 actually were (given they have the same CPU and same basic structure as the /45). The original idea seemed to be /45 = KB11-A + core, /50 = KB11-A + MOS, /55 = KB11-D + bipolar. But then the /45 was upgraded to KB11-D with options for MOS or bipolar memory. (Seems typical DEC practice). | |
| Feb 4, 2024 at 17:34 | comment | added | dave | Interestingly, the 1976 04 to 55 processor handbook has the 11/55 but not the 11/50. I don't know if that means the 11/50 came and went before 1976, or that it was not yet available in 1976. Also, the 11/45 is said to be available with bipolar memory. | |
| Feb 4, 2024 at 8:45 | history | asked | cjs | CC BY-SA 4.0 |