Radstone PME 68-1B, Руководство пользователя

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68000 Hardware Description
Processor
The 68000 processor contains sixteen 32-bit registers, one 32-bit program counter and a
16 bit status register. The first eight registers (D0 to D7) are used as data registers for
byte (8-bit), word (16-bit) and long word (2 x 16-bit) data operations. The set of seven
address registers (A0 to A6) and the supervisor stack pointer may be used as software
stack pointers and base address registers. In addition, all 16 registers may be used for
word and long word address operations, or as index registers. Table 1 shows the
vector layout of the 68000.
Features of the 68000 CPU include:
·
8 x 32-bit data registers
·
7 x 32-bit address registers
·
32-bit supervisor stack pointer or 32-bit user stack pointer
·
16-bit status register
·
16Mbyte direct addressing range
·
56 powerful instruction types
·
14 different addressing modes
·
5 main data types
·
Memory mapped I/O
·
Asynchronous bus structure
For further details refer to the Motorola 68000 Data Sheet available from your supplier.
PME68-1B Manual
Page 12 Issue 5