68000 instruction timing
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A short branch to the next instruction is impossible, since the branch code 0 indicates a long branch with a 16-bit offset. The assembly language form BCC *+8 The syntax of two-operand instructions may be reversed from other machines you're used to. For instance, the 68000 instruction MOVE.W D0,D1 is equivalent to Motorola 68000 Instruction Set: · 1.DBCC (Decrement and Branch) : This is a very useful instruction for implementing looping conditions. · 2. SWAP : It swaps theThis manual contains detailed information about software instructions used by the microprocessors and coprocessors in the M68000 family, including: MC68000. Bcc. Operation: If (condition true) then PC + d -->; PC. Compatibility: 68000 Family. Assembler Syntax: Bcc . Attributes: Size = (Byte, Word, Long*) The BEQ instruction will only branch if the Z flag is set. If it is cleared, it will ignore the branch and continue. The 68000 provides the programmer with a toolkit containing instructions for the implementation of conditional structures: Bcc Branch to label on Instruction Fields: 8-Bit Displacement field—Twos complement integer specifying the number of bytes between the branch instruction and the next instruction to