XPost: alt.folklore.computers   
   From: Peter@Iron-Spring.com   
      
   On 8/6/25 10:25, John Levine wrote:   
   > According to Anton Ertl :   
   >> Lawrence D'Oliveiro  writes:   
   >>> Not aware of any platforms that do/did ILP64.   
   >>   
   >> AFAIK the Cray-1 (1976) was the first 64-bit machine, ...   
   >   
   > The IBM 7030 STRETCH was the first 64 bit machine, shipped in 1961,   
   > but I would be surprised if anyone had written a C compiler for it.   
   >   
   > It was bit addressable but memories in those days were so small that a full   
   bit   
   > address was only 24 bits.  So if I were writing a C compiler, pointers and   
   ints   
   > would be 32 bits, char 8 bits, long 64 bits.   
   >   
   > (There is a thing called STRETCH C Compiler but it's completely unrelated.)   
      
   I don't get why bit-addressability was a thing? Intel iAPX 432 had it,   
   too, and it seems like all it does is drastically shrink your address   
   space and complexify instruction and operand fetch to (maybe) save a few   
   bytes.   
      
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