mirror of
https://github.com/uffejakobsen/acme.git
synced 2024-11-22 18:32:09 +00:00
f1341c44fd
Finally disabled obsolete pseudo opcodes "!cbm", "!subzone" and "!realpc".
!pseudopc now *must* be used with a block in {} braces.
Added support for illegal opcode LXA #$00 (opcode 0xba).
git-svn-id: https://svn.code.sf.net/p/acme-crossass/code-0/trunk@26 4df02467-bbd4-4a76-a152-e7ce94205b78
390 lines
14 KiB
Plaintext
390 lines
14 KiB
Plaintext
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ACME
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...the ACME Crossassembler for Multiple Environments
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--- error messages ---
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Here's a sorted list of all error messages ACME can give, possible
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reasons and what you can do to sort it out.
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----------------------------------------------------------------------
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Section: Errors on startup
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----------------------------------------------------------------------
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Cannot open toplevel file "FILENAME".
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Maybe you mistyped its name?
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Error in CLI arguments: ...
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There are several of these errors, but they should be quite self-
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explanatory.
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----------------------------------------------------------------------
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Section: Warnings during assembly
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----------------------------------------------------------------------
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!warn: ...
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This is given when the pseudo opcode "!warn" is executed. The
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actual message varies according to the pseudo opcode's arguments.
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Assembling buggy JMP($xxff) instruction
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The original 6502 processor has a bug: When executing an indirect
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JMP instruction where the low byte of the argument equals $ff, it
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fetches the high byte of the jump target address not from memory
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location ARGUMENT + 1, but from ARGUMENT - 255. Therefore ACME
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issues this warning if you are about to generate such an
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instruction.
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Note that this warning is only given for CPU types 6502 and 6510,
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because 65c02 and 65816 have been fixed in this respect.
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Assembling unstable LXA #NONZERO instruction
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This warning is only ever given for CPU type 6510. LXA is one of
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the undocumented ("illegal") opcodes of this CPU (opcode 0xab),
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and it only works reliably if its argument is zero. Therefore ACME
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issues this warning if you are about to generate this instruction
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with a non-zero argument.
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Bug in ACME, code follows
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A situation has been encountered implying there is a bug in ACME.
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See the last section in this file.
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Implicit label definition not in leftmost column.
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An implicit label definition has blanks before the label name.
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Imagine this source code:
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lda #00
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imx
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rts
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Obviously, there's a typo in the middle line (imx instead of inx),
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but ACME does not recognize this: It looks just like an implicit
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label definition! Therefore releases 0.89 and higher warn you when
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an implicit label does not start in column 1. Releases 0.94 and
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higher support a command line option to switch off this warning
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("-Wno-label-indent").
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Label dump file already chosen.
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The "!sl" command was given more than once (or in addition to the
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"--labeldump" command line option). Only use it once.
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Label name starts with a shift-space character.
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The name of a global label starts with a shift-space character. It
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is highly likely that this is a typing error, therefore this
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warning is issued.
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Memory already initialised.
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The "!initmem" command was given more than once (or in addition to
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the "--initmem" command line option). Only use it once.
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Output file already chosen.
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The "!to" command was given more than once (or in addition to the
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"--outfile" command line option). Only use it once.
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Segment reached another one, overwriting it.
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The program counter has just reached the start of another segment.
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Because some people might want to assemble "onto" a binary file
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that was loaded before, this warning can be switched off using
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modifier keywords when changing the program counter via "* =".
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Future versions of ACME might throw an error instead of a warning
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in this case.
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Segment starts inside another one, overwriting it.
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The given value in a "* =" command is located inside another
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segment. Because some people might want to assemble "onto" a
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binary file that was loaded before, this warning can be switched
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off using modifier keywords when changing the program counter via
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"* =".
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Future versions of ACME might throw an error instead of a warning
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in this case.
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Used "!to" without file format indicator. Defaulting to "cbm".
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Now that "!to" can be given a file format keyword (either "plain"
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or "cbm"), using "cbm" as default seems inappropriate. It still
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works though.
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Using oversized addressing mode.
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ACME just assembled a command using an addressing mode that was
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larger than needed. This only happens if ACME could not work out
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the argument's value in the first pass, therefore assuming a 16-
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bit addressing mode. If, in a later pass, ACME finds out that the
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argument is small enough to fit in 8 bits, then this warning is
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shown. If you define all your zeropage labels *before* they are
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first used, this shouldn't happen. If you know that a specific
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argument fits in 8 bits, you can force ACME to use 8 bits
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addressing by postfixing the command with "+1". Example:
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lda+1 label
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ACME will then use an 8-bit addressing mode, regardless of whether
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the label is known or not. If the label value happens to be too
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large to fit in 8 bits, ACME will show an error of course (To
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always truncate a value to 8 bits, use the '<' operator).
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More about the postfixing method can be found in "AddrModes.txt".
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----------------------------------------------------------------------
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Section: Errors during assembly
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----------------------------------------------------------------------
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"ACME" environment variable not found.
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This will be shown if the source code references any files from
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the library, but the library location variable wasn't set. This
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can only be given on systems using the said variable.
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"!cbm" is obsolete; use "!ct pet" instead.
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This is given when the now obsolete "!cbm" pseudo opcode is
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encountered.
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"!pseudopc/!realpc" is obsolete; use "!pseudopc {}" instead.
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This is given when one of the now obsolete !pseudopc/!realpc
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pseudo opcodes is encountered.
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"!subzone {}" is obsolete; use "!zone {}" instead.
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This is given when the now obsolete "!subzone" pseudo opcode is
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encountered.
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!error: ...
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This is given when the pseudo opcode "!error" is executed. The
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actual message varies according to the pseudo opcode's arguments.
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Cannot open input file.
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ACME had problems opening an input file ("!bin", "!convtab" or
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"!src"). Maybe you mistyped its name.
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Conversion table incomplete.
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The conversion table file is too small. It needs to be exactly 256
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bytes in size.
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Division by zero.
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Guess what - you attempted to divide by zero.
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Exponent is negative.
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Using negative exponents only give sensible results when using
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floating point maths.
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File name quotes not found ("" or <>).
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File names have to be given in quotes. Either "" quoting for files
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located in the current directory or <> quoting for library files.
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Found '}' instead of end-of-file.
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ACME encountered a '}' character when it expected the file to end
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instead (because no blocks were open).
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Garbage data at end of statement.
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There are still arguments when there should not be any more.
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Illegal combination of command and addressing mode.
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The given command cannot be used with the given addressing mode on
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the CPU you have chosen.
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Illegal combination of command and postfix.
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The given command cannot be used with the addressing mode
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indicated by the given postfix.
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Illegal postfix.
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You used a postfix other than "+1", "+2" or "+3".
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Label already defined.
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You defined a label that already had a different value. To change
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a label's value, use the "!set" pseudo opcode.
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Macro already defined.
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Macros can only be defined once. If you define a macro twice, ACME
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will help you find the definitions by giving a warning for the
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first definition and a serious error (stopping assembly) for the
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second definition.
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Macro not defined (or wrong signature).
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You tried to call a macro that either wasn't defined yet (always
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define macros before using them) or was called with an illegal
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argument list. There must be a 1:1 match between the definition's
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formal parameters and the call's actual arguments.
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Macro parameter twice.
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The same label name is used two (or more) times in the same macro
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parameter list.
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Negative value - cannot choose addressing mode.
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Because the argument is a negative value, ACME does not know what
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addressing mode (8 bits, 16 bits, on a 65816 even 24 bits) to use.
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You can overcome this problem using the postfix method. Or correct
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your program to use positive addresses instead.
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No string given.
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ACME expects a string but doesn't find it.
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Number out of range.
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A value is too high or too low.
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Program counter is unset.
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You didn't set the program counter, so ACME didn't know where to
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start.
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Quotes still open at end of line.
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You forgot the closing quotes.
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Source file contains illegal character.
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Your source code file contained a null byte.
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Syntax error.
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Guess what - there's a syntax error.
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Target not in bank (0xTARGET).
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You tried to branch to an address not in the 0x0000..0xffff range.
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Relative addressing (branch commands or PER) cannot leave the
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current code bank of 64 KiB.
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Target out of range (N; M too far).
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Branch commands use relative addressing, which only has a limited
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range. You exceeded it. N is the attempted offset, M is the
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difference to the limit - so if you succeed in optimizing M bytes
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away, the code would assemble.
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There's more than one character.
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You used a text string in an arithmetic expression, but the string
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contained more than a single character.
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Too late for postfix.
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You can only postfix labels at the start, before they are used for
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the first time.
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Too many '('.
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A formula ends before all parentheses were closed.
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Too many ')'.
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There are more closing than opening parentheses in a formula.
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Unknown encoding.
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You used the "!convtab" command with a keyword ACME does not know.
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Unknown operator.
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You used an arithmetic/logical operator ACME does not know.
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Unknown output format.
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You used the "!to" command with a keyword ACME does not know.
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Unknown processor.
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You used the "!cpu" command with a keyword ACME does not know.
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Unknown pseudo opcode.
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You have mistyped a "!" command.
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Unknown "* =" segment modifier.
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You used a modifier keyword ACME does not know.
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Value not yet defined.
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A value could not be worked out. Maybe you mistyped a label name.
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Whether this is given as a "normal" or as a serious error depends
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on the currently parsed pseudo opcode.
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----------------------------------------------------------------------
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Section: Serious errors (stopping assembly)
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----------------------------------------------------------------------
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!serious: ...
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This is given when the pseudo opcode "!serious" is executed. The
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actual message varies according to the pseudo opcode's arguments.
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Found end-of-file instead of '}'.
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The file ended when ACME expected the block to be closed instead
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(because there was at least one block left open).
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Loop count is negative.
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You used the "!for" command with a negative loop count.
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Macro already defined.
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Macros can only be defined once. If you define a macro twice, ACME
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will help you find both definitions by giving a warning for the
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first definition and a serious error (stopping assembly) for the
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second definition.
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Missing '{'.
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ACME didn't find the expected '{' character. Remember that '{'
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characters must be given on the same line as the command they
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belong to.
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Out of memory.
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When ACME runs out of memory, it stops assembly, giving this
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error. Free some memory and try again. It's highly unlikely anyone
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will ever see this error, though. ;)
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Produced too much code.
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The program counter reached address $10000, leaving the output
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buffer. At the moment, ACME can only produce a maximum of 64 KB.
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Syntax error.
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This is only given as a _serious_ error if it's in a "!do" loop
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condition.
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Too deeply nested. Recursive macro calls?
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The only reason for ACME to have a limit on macro call nesting
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at all is to find infinite recursions. Current limit is 64.
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Too deeply nested. Recursive "!source"?
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The only reason for ACME to still have a limit on "!source"
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nesting at all is to find infinite recursions. Current limit is
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64.
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Value not yet defined.
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A value could not be worked out. Maybe you mistyped a label name.
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Whether this is given as a "normal" or as a serious error depends
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on the currently parsed pseudo opcode.
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----------------------------------------------------------------------
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Section: Errors on closedown
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----------------------------------------------------------------------
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Cannot open label dump file "FILENAME".
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Cannot open output file "FILENAME".
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Make sure the name doesn't contain wildcard characters and you
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have write access to the directory.
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No output file specified (use the "-o" option or the "!to" pseudo opcode).
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You didn't specify the output file, so ACME did not create one.
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----------------------------------------------------------------------
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Section: Bugs in ACME
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----------------------------------------------------------------------
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The warning "Bug in ACME, code follows" is always followed by a
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serious error message, stopping assembly. The second message
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actually gives a hint about the bug's location in the source code.
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If you ever get this combination of warning and serious error,
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please send me an e-mail and tell me about it. If possible,
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include a piece of source code that triggers it.
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Please don't get this wrong - there are no known bugs. I just left
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some debugging code in place in case there is a bug I failed to
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notice during testing. In practice, this warning is not expected
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to be given at all. That's the reason why I want to be notified if
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it *does* decide to show up.
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The hint messages are of no real interest to the end user, but here
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they are for completeness' sake.
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IllegalGroupIndex
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The mnemonic tree contains a group that I didn't add.
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IllegalBlockTerminator
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A RAM block (macro or loop) was terminated incorrectly.
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IllegalOperatorHandle
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The expression parser found an operator that does not exist.
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OperandStackNotEmpty
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The expression parser has finished though there are still operands
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left to parse.
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OperatorStackNotEmpty
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The expression parser has finished though there are still
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operators left to parse.
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StrangeInputMode
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The input state machine has reached a state that does not exist.
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StrangeParenthesis
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The expression parser found a non-existing operator.
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