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1972 Unix V2 "Beta" Resurrected

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414 points henry_flower | 1 comments | 19 Feb 25 21:41 UTC | HN request time: 0.001s | source
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digitalsushi ◴[19 Feb 25 22:35 UTC] No.43108644[source]▶
Spock levels of fascinating from me. I want to learn how to compile a pdp11 emulator on my mac.
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snovymgodym ◴[19 Feb 25 22:44 UTC] No.43108726[source]▶
https://opensimh.org/

Works great on Apple Silicon

replies(1): >>43108833 #
haunter ◴[19 Feb 25 22:56 UTC] No.43108833[source]▶
What’s the difference between an emulator and a simulator in this context?
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o11c ◴[19 Feb 25 23:12 UTC] No.43108980{3}[source]▶
In theory, an emulator is oriented around producing a result (this may mean making acceptable compromises), whereas a simulator is oriented around inspection of state (this usually means being exact).

In practice the terms are often conflated.

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codr7 ◴[20 Feb 25 01:53 UTC] No.43110169{4}[source]▶
The difference is about as crystal clear as compiler/interpreter.
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Imustaskforhelp ◴[20 Feb 25 16:23 UTC] No.43116620{5}[source]▶
compiler creates a binary in elf format or other format which can be run given a shared object exists.

Intepreter either writes it in bytecode and then executes the bytecode line by line ?

Atleast that is what I believe the difference is , care to elaborate , is there some hidden joke of compiler vs intepreter that I don't know about ?

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amszmidt ◴[20 Feb 25 20:16 UTC] No.43119591{6}[source]▶
An interpreter runs the code as it is being read in.

A compiler processes the code and provides an intermediate result which is then "interpreted" by the machine.

So to take the "writes it in byte code" -- that is a compiler. "executes the byte code" -- is the interpreter.

If byte code is "machine code" or not, is really secondary.

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1. Imustaskforhelp ◴[21 Feb 25 05:58 UTC] No.43124450{7}[source]▶
Then isn't theoretically all languages assembly intepreters in the endd