mirror of
https://github.com/uffejakobsen/acme.git
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87 lines
3.1 KiB
Plaintext
87 lines
3.1 KiB
Plaintext
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VisAss, AssBlaster and Flash8-AssBlaster stuff
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----------------------------------------------
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The pseudo opcode "\kc" cannot be converted, because ACME does not
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have a matching pseudo opcode. The converter will insert an
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explanatory message in the output file.
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The pseudo opcode "\st" is converted to "!eof". To decide whether this
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makes sense or not is left as an exercise for the reader.
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"Marked" AssBlaster labels are converted to global ACME labels.
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"Unmarked" AssBlaster labels are converted to local ACME labels.
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If your AssBlaster sources contain marked (!) labels which read like
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mnemonics ("^lda", "^nop" "^sed" or the like), ACME will interpret
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the converted versions like instructions.
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THE CONVERTER DOES NOT HANDLE THIS PROBLEM YET, so you will have to
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change such label names by hand. If binaries produced by ACME and
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AssBlaster are the same size, you don't have this problem.
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AssBlaster allows the characters '[', ']' and '^' to be used in label
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names. These are converted to uppercase letters, which does not cause
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any problems - it just looks a bit strange... :)
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Empty comments (semicolons at end-of-line) are stripped.
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AssBlaster claims to support the 6510's undocumented ("illegal")
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instructions. Actually, when I checked, it confused some of the
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mnemonics ("asr" and "arr"), and for "lax" and "aax" (aka "sax") it
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actually generated wrong opcodes for some addressing modes.
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There's a slight problem with macros: Source codes that assemble fine
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with AssBlaster *might* give "label not defined" errors after ACME
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conversion. This is because AssBlaster macros can access all labels,
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while ACME macros can only access global labels (besides their
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arguments, of course).
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To fix such errors, you'll have to
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a) make the macro code reference global labels instead of local ones
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and
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b) define those global labels, of course.
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AssBlaster ACME (unfixed) ACME (fixed by you)
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\md chk.c1,c2 !macro chk .c1,.c2 { !macro chk .c1,.c2 {
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lda #c1 lda #.c1 lda #.c1
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ldx #c2 ldx #.c2 ldx #.c2
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jsr sub jsr .sub jsr sub ;<-FIX
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\de } }
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\ma chk.5,7 +chk 5,7 +chk 5,7
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rts rts rts
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sub: .sub .sub
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rts; later rts; later sub ;<-FIX
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rts; later
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Hypra-Ass and Giga-Ass stuff
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----------------------------
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The following pseudo opcodes cannot be converted, because ACME does
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not have any matching pseudo opcode. The converter will insert an
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explanatory message in the output file.
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.on (uses BASIC line numbers)
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.go (uses BASIC line numbers)
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.co (for chained assembly)
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.dp (format rules)
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.li (list on printer)
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.st (stop output)
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Empty comments (semicolons at end-of-line) are stripped.
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There's a problem with macros: ACME macro parameters should be *local*
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labels, but in Hypra-Ass and Giga-Ass, all labels are global.
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THE CONVERTER DOES NOT HANDLE THIS PROBLEM, so you will have to fix
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the macros manually:
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Hypra-Ass ACME (unfixed) ACME (fixed by you)
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.ma chk (c1,c2) !macro chk c1,c2 { !macro chk .c1,.c2 {
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lda #c1 lda #c1 lda #.c1
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ldx #c2 ldx #c2 ldx #.c2
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jsr sub jsr sub jsr sub
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.rt } }
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