Quizzes & Puzzles17 mins ago
National Scamp
6 Answers
What's a National Scamp please ? It sure sounds like a lot of fun and I would really love to have a bit more fun these days....
Answers
Best Answer
No best answer has yet been selected by Jugglering. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.The SC/MP from National Semiconductor is an early microprocessor, which became available in early 1974. The name SC/MP (pronounced "Scamp") is an acronym for: "Simple Cost-effective Micro Processor".
It features a 16-bit address and an 8-bit data bus. The program counter will roll-over on 12-bits (4096), there are separate instructions to alter the program counter to set the upper 4-bits, which are subsequently output on the address bus along with status signals. This provides a memory map of 16 pages each of 4k bytes. Internally it provided five registers plus the program counter, but no stack pointer.
more here ... http://en.wikipedia.org/wiki/National_Semicond uctor_SC/MP
It features a 16-bit address and an 8-bit data bus. The program counter will roll-over on 12-bits (4096), there are separate instructions to alter the program counter to set the upper 4-bits, which are subsequently output on the address bus along with status signals. This provides a memory map of 16 pages each of 4k bytes. Internally it provided five registers plus the program counter, but no stack pointer.
more here ... http://en.wikipedia.org/wiki/National_Semicond uctor_SC/MP
Thank you dot.hawkes - it was whiffey's "national scamp" I was referring to (I'd never heard the expression before).
naz_nomad - top reply as well, thank you, although I am slightly disappointed that your *SC/MP* did not provide an internal stack pointer, but I guess that's because it really was a *scemp* and not a *scamp* ;)
naz_nomad - top reply as well, thank you, although I am slightly disappointed that your *SC/MP* did not provide an internal stack pointer, but I guess that's because it really was a *scemp* and not a *scamp* ;)
Related Questions
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.