S3CK225 Datasheet, PDF(90/256 Page) Samsung semiconductor – CalmRISC 8-Bit CMOS MICROCONTROLLER

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S3CK225 Datasheet, PDF (90/256 Pages) Samsung semiconductor – CalmRISC 8-Bit CMOS MICROCONTROLLER

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INSTRUCTION SET

AND SR0, #imm:8/OR SR0, #imm:8

Sets/resets bits in SR0 and stores the result back into SR0.

Operation

SR0 â SR0 & #imm:8

SR0 â SR0 | #imm:8

BANK #imm:2

Loads SR0[4:3] with #imm[1:0].

Operation

SR0[4:3] â #imm[1:0]

MISCELLANEOUS INSTRUCTION

SWAP GPR, SPR

Swaps the values in GPR and SPR. SR0 and SR1 can NOT be used for this instruction.

No flag is updated, even though the destination is GPR.

Operation

temp â SPR

SPR â GPR

GPR â temp

Example

SWAP R0, IDH

// assume IDH = 00h and R0 = 08h.

// after this, IDH = 08h and R0 = 00h.

PUSH REG

Saves REG in the stack (Pushes REG into stack).

REG = GPR, SPR

Operation

HS[sptr][7:0] â REG and sptr â sptr + 1

Example

PUSH R0

// assume R0 = 08h and sptr = 2h

// then HS[2][7:0] â 08h and sptr â 3h

S3CK225/FK225

7-26

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