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The 68000's Instruction Set
Source operand addressing modes
RESET Reset external devices
Operation: IF [S] = 1 THEN
Assert RESET* line
ELSE TRAP
Syntax: RESET
Attributes: Unsized
Description: The reset line is asserted, causing all external devices connected
to the 68000s RESET* output to be reset. The RESET instruction is
privileged and has no effect on the operation of the 68000 itself.
This instruction is used to perform a programmed reset of all
peripherals connected to the 68000's RESET* pin.
Condition codes: X N Z V C
- - - - -
ROL, ROR Rotate left/right (without extend)
Operation: [destination] ← [destination] rotated by <count>
Syntax: ROL Dx,Dy
ROR Dx,Dy
ROL #<data>,Dy
ROR #<data>,Dy
ROL <ea>
ROR <ea>
Attributes: Size = byte, word, longword
Description: Rotate the bits of the operand in the direction indicated. The
extend bit, X, is not included in the operation. A rotate operation
is circular in the sense that the bit shifted out at one end is shifted
into the other end. That is, no bit is lost or destroyed by a rotate
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