a)HLL b) 68K x:=x+1 ADDQ.W #1,X IF A=7 THEN CMPI.W #7,A B:=3; BNE NEXT C:=4; MOVEQ #3,B END IF MOVEQ #4,C x:=X+2; NEXT: ADDQ.W #2,X b) At. Programmation Structurée En Assembleur by J.-P. Malengé, S. Albertsen, P. Collard and L. Andréani Masson, Paris, pages. ABCD. Operation: Source(base 10) + Destination (base 10) –>; Destination. Compatibility: Family. Assembler Syntax: ABCD Dy, Dx ABCD -(Ay), -(Ax).

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Books to be broken into subpages Subject: Wikipedia has more about this subject: From Wikibooks, open books for an open world. If set, look at M to determine what stack SP points to. When a word is transferred to an address 6800, bit 15 the sign bit will be copied through the whole upper word bit The only exception is byte operations on A7 – this register must point to an even address, so it will always decrement by at least 2. 680000

Assembly – Wikibooks, open books for an open world

On theonly the lower 24 bits output to any pins, giving a maximum addressing range of 16MiB. Copies whole A1 to D0. Note that you can reference labels before they’re actually declared. If adsembleur refer to a word or a long word, the address in the address register must be an EVEN number.


When moving a byte or a word, the upper part of the register will remain unchanged. Their assembly languages are completely different. The register looks like this:. Most instructions can assembleue on all data sizes, and very few are restricted to less than three addressing modes. This label can then be used as an operand anywhere a number can. Same as indirect addressing, but An will be increased by the size of the operation after the instruction is executed.

One thing to note is that sasembleur PowerPC is not binary compatible with the 68K processor.


Note that PC is the address of the extension word that x is stored in right after the instruction’s word. Take care with this!!!

If set, trace on change of program flow. This may change the size of the label, in which case a third pass will be needed, and so on. If set, trace is allowed on any instruction. Dividing books into smaller sections can provide more focus and allow each one to do one thing well, which benefits everyone. When the instruction is executed, both registers will contain the same information. First decreases A0 with 4 size of operandthen copies the long word starting at address stored in A0 to D2.

SR is only available in supervisor mode.

Langage de programmation – Assembleur – Référence d’instructions Motorola x0 par OpCode

Like absolute near, you can include the aswembleur at your discretion. This bit is always cleared on processor models lower than Policies and guidelines Contact us. SP, also called a7. Only the lower byte is accessible in user mode, and of this, only the first five bits are useful.


The Program Counter PC points to the current instruction. In other languages Add links.

You can write this either with or without the parentheses, and most assemblers can take either one. They are usually used in Jcc or Bcc instructions.

The only exception is byte operations on A7 – this register must point to an even address, so it will always increment by at least 2. Detailed descriptions of every instruction in the MC family can be found in the Programmer’s Reference Manual.

This bit is always clear on processor models lower than After the instruction, both registers contain the same information. Some assemblers won’t take certain syntaxes. Retrieved from ” https: I will refer to this as “declaring” the label. You can have as many labels as you want.