This method does not need to remap interrupt entries. But there is a problem with this method. It requires the user to
check the disassembly code of the C program to determine which registers need to be pushed onto the stack in the
assembly file. PSW, ACC, B, DPL, DPH and R0 ~ R7 are included generally. In addition to the PSW must be pushed
onto the stack, registers which are used in the user subroutine must be pushed onto the stack.
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