The 68000 Microprocessor: Architecture, Programming, and Applications

A₁ ACIA address bus address lines address mode address register Bit Bit Bit branch breakpoint buffers bus cycle bus error cache chip select circuit clock command Condition Codes contents control register coprocessor CPU space d(PC D₁ data bus data lines data register data transfer decoder decremented diagram display DTACK Effective Address Enable EPROM example execution fetched Figure flag function index register initiated input instruction interface interrupt mask interrupt request LDAA loaded location $00 logic long word Syntax loop lower word memory location microprocessor module Motorola MOVE MOVE.W operand operation output overflow parity pins port program counter pulse register direct reset otherwise Set if results sign extended signal specified stack pointer status register stored subroutine subtraction Table tion Unaffected Opword Coding voltage word size Yes Absolute Yes Yes Yes zero