4-2 - to fill all the bits of the register It’s use to...

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4.2 Notes: - Addresses and Address Registers have 32 bit values. - All operations involving Addresses are .L operations, although you can perform .W operations on it they’re just converted to Longs. - Address Lines 24-31 are not connected to Address pins thus they have no effect on the address being sent to memory so the 68000 can only access 24 bits of it. - The Most Significant bits of the address generated by the 68000 does not matter so $24123456 is the same as $00123456 - You must remember to use the special versions - Short Addressing is a word that is stored in a 32-bit address register it’s extended
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Unformatted text preview: to fill all the bits of the register. It’s use to access the operand-The 68000 uses 16 bit because it’s faster to access it. It stores quick access stuff in the first(or last if your human lol) 16 bits of the 32 k. Less frequently stuff access is stored in the upper bit of the register.-When printing a char, the most significant bit is shifted into the least significant bit position then copied into a register to it will print the string from left to right. Because it is stored from right to left-...
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  • Fall '07
  • Wagner
  • Most significant bit, Least significant bit, significant bit position, 32-bit address register, quick access stuff

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