National Instruments HPC167064 BIT Instructions Sbit, Rbit, Ifbit, Memory Transfer Instructions

HPC Instruction Set Description (Continued)

Mnemonic	Description	Action
BIT INSTRUCTIONS
SBIT	Set bit	1xMem.bit
RBIT	Reset bit	0xMem.bit
IFBIT	If bit	If Mem.bit is true, do next instr.
MEMORY TRANSFER INSTRUCTIONS
LD	Load	MemIxMA
	Load, incr/decr X	Mem(X)xA, X g1 (or 2)xX
ST	Store to Memory	AxMem
X	Exchange	AÝMem
	Exchange, incr/decr X	AÝMem(X), X g1 (or 2)xX
PUSH	Push Memory to Stack	WxW(SP), SPa2xSP
POP	Pop Stack to Memory	SPb2xSP, W(SP)xW
LDS	Load A, incr/decr B,	Mem(B)xA, B g1 (or 2)xB,
	Skip on condition	Skip next if B greater/less than K
XS	Exchange, incr/decr B,	Mem(B)ÝA, Bg1 (or 2)xB,
	Skip on condition	Skip next if B greater/less than K
REGISTER LOAD IMMEDIATE INSTRUCTIONS
LD B	Load B immediate	immxB
LD K	Load K immediate	immxK
LD X	Load X immediate	immxX
LD BK	Load B and K immediate	immxB, immxK
ACCUMULATOR AND C INSTRUCTIONS
CLR A	Clear A	0xA
INC A	Increment A	A a 1xA
DEC A	Decrement A	A b 1xA
COMP A	Complement A	1’s complement of AxA
SWAP A	Swap nibbles of A	A[15:12] wA[11:8] wA[7:4] ÝA[3:0]
RRC A	Rotate A right thru C	CxA15 x . . . xA0xC
RLC A	Rotate A left thru C	CwA15 w . . . wA0wC
SHR A	Shift A right	0xA15x . . . xA0xC
SHL A	Shift A left	CwA15w . . . wA0w0
SC	Set C	1xC
RC	Reset C	0xC
IFC	IF C	Do next if C e 1
IFNC	IF not C	Do next if C e 0
TRANSFER OF CONTROL INSTRUCTIONS
JSRP	Jump subroutine from table	PCxW(SP),SPa2xSP
		W(tableÝ)xPC
JSR	Jump subroutine relative	PCxW(SP),SPa2xSP,PCaÝxPC
		(Ýis a1025 to b1023)
JSRL	Jump subroutine long	PCxW(SP),SPa2xSP,PCaÝxPC
JP	Jump relative short	PCaÝxPC(Ý is a32 to b31)
JMP	Jump relative	PCaÝxPC(Ýis a257 to b255)
JMPL	Jump relative long	PCaÝxPC
JID	Jump indirect at PC a A	PCaAa1xPC
JIDW		then Mem(PC)aPCxPC
NOP	No Operation	PC a 1 xPC
RET	Return	SPb2xSP,W(SP)xPC
RETSK	Return then skip next	SPb2xSP,W(SP)xPC, & skip
RETI	Return from interrupt	SPb2xSP,W(SP)xPC, interrupt re-enabled

Note: W is 16-bit word of memory

MA is Accumulator A or direct memory (8-bit or 16-bit)

Mem is 8-bit byte or 16-bit word of memory

MemI is 8-bit or 16-bit memory or 8-bit or 16-bit immediate data imm is 8-bit or 16-bit immediate data

imm8 is 8-bit immediate data only

For details of memory usage by each instruction, see The HPC User’s Manual.

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