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-
- DASM V2.12
-
- (c)Copyright 1988 Matthew Dillon, All Rights Reserved.
- Freely Distributable (for non-profit) ONLY. No redistribution
- of any modified text files or redistribution of a subset of the
- source is allowed.
-
- Circumvention of said terms requires the permission of the Author (me)
- via US Mail.
-
- Matthew Dillon
- 891 Regal Rd.
- Berkeley, Ca. 94708
-
-
- COMPILATION
-
- The source code assumes that integers are LONG WORDS. All expression
- computation is carried out with 32 bit ints. Additionaly, the
- correct implementation of STDIO functions is assumed (no translation).
-
- This code will compile with little or no modification on Amiga and UNIX
- systems.
-
- CONVERSION TO IBM:
-
- Should be relatively easy. Most of the code will work if int=16 bits.
-
- FEATURES
-
- -relatively fast
- -processor selection (use same assembler for many processors)
- -multi-pass (more than two passes if required)
- -conditional assembly
- -local labels (VERY local labels)
- -macro capability (no stacking limit)
- -symbolic expression capability
- -addressing mode overides
- -arbitrary number of named segments
- -many pseudo-ops for repeat loops, data generation, etc....
- -automatic checksumming accessed via the '...' symbol.
-
-
- PROCESSORS
-
- --------------- CURRENTLY SUPPORTED MICROPROCESSORS ---------------
-
-
- 6502: ORDER LSB,MSB A.b X.b Y.b RelAddr: .+ilen+offset
- 68705: ORDER MSB,LSB A.b X.b RelAddr: .+ilen+offset
- 6803/HD6303:ORDER MSB,LSB A.b B.b X.w RelAddr: .+ilen+offset
- 6811: ORDER MSB,LSB A.b B.b X.w Y.w RelAddr: .+ilen+offset
-
-
- ADDRESSING MODES 6502 68705 6803 6811
- BYTES HD6303
-
- 2 implied x x x x
- 2 immediate.8 #byte x x x x
- 3 immediate.16 #word x x
- 2 byteaddr byte x x x x
- 2 byteaddr,x byte,x x x x x
- 2 byteaddr,y byte,y x x
- 3 wordaddr word x x x x
- 3 wordaddr,x word,x x x
- 3 wordaddr,y word,y x
- 2 relative byte x x x x
- 2 ind.byte.x (byte,x) x
- 2 ind.byte.y (byte),y x
- 3 ind.word (word) x
- 1 0,x [0],x x
- 2 bitmod #no,badr x baseinst + 2*bitno
- 3 bitbramod #no,badr,rel x baseinst + 2*bitno
-
- NOTE: HD6303 instruction extensions over the 6803 are:
- AIM OIM EIM TIM XGDX SLP
-
- I believe the 6811 is a superset of the 6803.
-
-