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17 lines
807 B
Plaintext
17 lines
807 B
Plaintext
The following words allow you to assemble z80 binaries. Being
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Forth words, opcode assembly is a bit different than with a
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typical assembler. For example, what would traditionally be
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"ld a, b" would become "A B LDrr,".
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The "argtype" suffix after each mnemonic is needed because the
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assembler doesn't auto-detect the op's form based on arguments.
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It has to be explicitly specified. "r" is for 8-bit registers,
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"d" for 16-bit ones, "i" for immediate, "c" is for conditions.
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Be aware that "SP" and "AF" refer to the same value: some 16-
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bit ops can affect SP, others, AF. If you use the wrong argu-
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ment on the wrong op, you will affect the wrong register.
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Mnemonics having only a single form, such as PUSH and POP,
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don't have argtype suffixes.
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(cont.)
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