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An assembler and a disassembler for the NECPU (https://github.com/lirc572/NECPU)

Python 3.15% Assembly 29.58% Verilog 67.27%

assembler cpu python

necpu-assembler's Introduction

Hey there 🍺🍺🍺

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necpu-assembler's Issues

Should show warning if a line has more fields than needed

Because it may be due to multiple instructions on one line.

negative immediate cause error

Check for negative immediate, provide options to represent in 2's complement.
Now it is only possible to convert to 2's complement manually before assembling (immed >= 0 ? immed : pow(2, 32) - immed)

`LINE_NUMBER` Problem

Using LINE_NUMBER is a convenient way to get the current line number in an assembly program. Note that if the current instruction is a pseudo-instruction, LINE_NUMBER refers to the address of the first real instruction generated from the pseudo-instruction. Therefore, the address of the next instruction may not simply be LINE_NUMBER+1. The number of real instructions to skip need to be considered.

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