New answers tagged intel
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Yes, there were other co-processors for the IBM PC computer other then Intel 8087 NPU/FPU Units. Many of them had additional circuity with some RAM and a ROM chips. The ROM chips on some of them contained an FPU emulation program if it was using a standard microprocessor other than a Intel model. Others had a BIOS extension for the system.
Some older issues ...
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Yes it is possible to have an IDE controller on a 8087 NPU (FPU) coprocessor socket.
Most of these adapters had a circuit to switch in a BIOS and RAM cache Overlay when the IDE controller logic required it.
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Another example of this would be any expansion card that used the Dec. Rainbow 100 computers memory expansion card slot for peripherals. The card ...
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