44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
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Notes on MAXAM compatibility
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============================
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MAXAM is an assembler for Amstrad CPC machines
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(a CP/M version also exists).
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zmac tries to be MAXAM-compatible.
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Note the following major differences with MAXAM 1.14, though:
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- zmac allows ' and " strings to be specified using '''' and """".
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MAXAM only allows '"' and "'", which zmac also allows.
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- zmac will truncate symbols to 40 characters.
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MAXAM has no such restriction.
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- MAXAM allows strings to be terminated by end-of-line.
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zmac does not.
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- When using the READ directive, MAXAM will take the first
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non-whitespace character as the filename delimiter. zmac only
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allows ' or " as a filename delimiter.
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- AMSDOS restrictions prevent MAXAM from supporting nested
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READs, which zmac allows. AMSDOS restrictions also prevent
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MAXAM from supporting directories.
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- zmac has a pretty decent expression parser.
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MAXAM does not (no parentheses, no precedence).
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- zmac handles multiple ORGs by inserting padding bytes in
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the .bin file, but of course this means retrograde ORGs are
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not possible.
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- MAXAM allows multiple statements on the same line, separated
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by colons. zmac does not.
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- zmac has many synonyms for operators, directives, labels, hex
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constants, etc., which MAXAM does not support. The easiest
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thing is not to find out about them!
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Mark RISON, <mrison@hotmail.com>, 2000-05-25
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