All Questions
Tagged with early-computer zuse
4 questions
17
votes
1
answer
1k
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How were Zuse Z22 Instructions Encoded?
The title says it all:
How to En-/Decode Z22/Z23 Instructions?
(History and Linkage:
The question was raised by Wilson in a comment on my answer to his question "Why are PDP-7-style microprogrammed ...
- 39.7k
4
votes
1
answer
280
views
Why does the Z22 have a read-only shadow of the return address location?
For some context to this question see Raffzahn's excellent question and answer How were Zuse Z22 Instructions Encoded?.
The Z22 treats the first few locations of its address space in a particular way:...
- 14.2k
12
votes
3
answers
1k
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What is the instruction set of the Z4?
I am able to find a few instructions, such as:
Fin (presumably "Fine", as in the end of a musical score, ends a program),
Fin', (a conditional Fin),
St (possibly "Start" -- the need for this is ...
- 39.7k
6
votes
3
answers
287
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How does the floating point conversion in Zuse's machines work?
Can someone please help me understand the floating point to readable decimal conversion algorithms of the Z1 and Z3? There is a patent in German containing all the information but I can't speak German....
- 39.7k