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Design Philosophy Behind Motorola's MC68000 (2) |
 | | The MC68000 overcomes this with the ADDI instruction, which allows a byte, word, or long-word immediate value to also be added to an operand in memory using any legal destination-memory addressing mode. |
| | MC68000 op codes are always 16 bits wide, and any arguments the MC68000 requires are always stored as one or more 16-bit words (even if the argument is only a byte quantity). |
| | The MC68000 register set (see the figure) indicates the microprocessor's commitment to long-word data: even though this is a 16-bit machine, all the internal registers are 32 bits wide. |
| linux.cis.monroeccc.edu /~paulrsm/doc/dpbm68k2.htm (7538 words) |
