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Introduction to the 68000 instruction set
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ACIA active-low address bus address decoding address lines address register address space addressing modes assembly language asserted BERR block breakpoint buffer bus cycle bus drivers bus error bus master byte character chip circuit clock CMOS contents control register data bus data register data transfer DC.B device diagram DMAC DTACK dynamic memory enable EPROM example exception vector executed FFFF figure gate hardware HOVE.L IACK input instruction interface interrupt request latch LEA.L loaded logical address longword memory access memory components memory location memory space microcomputer microprocessor microprocessor systems module MOVE.B negated open-collector operand operating system output parameters peripheral physical address PI/T pins port processor program counter provides read cycle reset signal stack pointer status register strobe subroutine synchronous task terminal timer transmitted User I/O valid VMEbus word write cycle zero