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//
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//
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// Filename: zopcodes.cpp
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// Filename: zopcodes.cpp
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//
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//
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// Project: Zip CPU -- a small, lightweight, RISC CPU core
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// Project: Zip CPU -- a small, lightweight, RISC CPU core
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//
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//
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// Purpose:
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// Purpose: A simple program to handle the disassembly and definition
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// of the various Zip Assembly opcodes. The primary function
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// of this file is the zipi_to_string, or Zip Instruction to
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// string (disassemble) conversion.
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//
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Tecnology, LLC
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// Gisselquist Tecnology, LLC
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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const ZOPCODE zoplist[] = {
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const ZOPCODE zoplist[] = {
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// Special case instructions. These are general instructions, but with
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// Special case instructions. These are general instructions, but with
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// special opcodes
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// special opcodes
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// Conditional branches
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// Conditional branches
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"BUSY", 0xffffffff, 0x2f0f7fff, OPUNUSED, OPUNUSED, OPUNUSED, OPUNUSED, BITFIELD(3,21),
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"BRA", 0xffff8000, 0x2f0f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BRA", 0xffff8000, 0x2f0f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BRZ", 0xffff8000, 0x2f2f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BRZ", 0xffff8000, 0x2f2f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BNZ", 0xffff8000, 0x2f4f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BNZ", 0xffff8000, 0x2f4f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BGE", 0xffff8000, 0x2f6f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BGE", 0xffff8000, 0x2f6f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BGT", 0xffff8000, 0x2f8f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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"BGT", 0xffff8000, 0x2f8f0000, OPUNUSED, OPUNUSED, OPUNUSED, IMMFIELD(15,0), OPUNUSED,
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