Compatibility with the freeware IBM PC 68HC11 cross assembler from Motorola named AS11.

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Copyright © 2000 Harry Broeders.

The assembler THRAss11 is part of a 68HC11 simulator called THRSim11. This assembler has the following differences with AS11 (the freeware assembler from Motorola):

• The THRAss11 assembler does NOT support the following directives or pseudo-ops: BSZ, ZMB, FILL, PAGE, and OPT.
• The following pseudo-ops are recognized but ignored on AS11, the THRAss11 assembler generates an error when you use these directives: SPC, TTL, NAM[E]
• Bit manipulation operands are separated by blanks in AS11. In the THRAss11 assembler you can use both blanks or commas.
• Labels can contain the character $ In AS11. THRAss11 generates an error when you use a $ within a label.
• Labels are case sensitive in AS11. THRAss11 translates all labels to uppercase. So LABEL and label are two different labels for AS11 but they are the same for THRAss11.