Post Ab0iIDPtiLkqOSJ3Jo by dmbaturin@functional.cafe
 (DIR) More posts by dmbaturin@functional.cafe
 (DIR) Post #Ab0iIDPtiLkqOSJ3Jo by dmbaturin@functional.cafe
       2023-10-02T10:20:53Z
       
       0 likes, 0 repeats
       
       How exactly did early x86 CPUs that didn't have an integrated FPU know to send x87 instructions to the external co-processor?Was there a hardcoded instruction number range reserved for co-processors, or a general mechanism for registering instruction ranges?What bus did it use to send instructions to the FPU chip and retrieve results?If anyone has pointers, please share.#x86 #retrocomputing
       
 (DIR) Post #Ab0iIF67Sr7dbh4Hlg by skobkin@lor.sh
       2023-10-21T23:46:48Z
       
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       @dmbaturinCC @rayslava 🤔