Texas Instruments MSP50C614 manual Multpls, Execution PH, PL MR * src PC PC + Flags Affected

Individual Instruction Descriptions

4.14.45 MULTPLS							Multiply String and Transfer PL to Acumulator
Syntax
	[label]		name			dest, src								Clock, clk				Word, w			With RPT, clk							Class
		MULTPLS				An, {adrs}										Table 4±46					Table 4±46							1b
		MULTPLS				An[~], An[~]									nS+3				1				nR+3					3
Execution				PH, PL ⇐				MR * src
				An ⇐		PL
				PC ⇐ PC + 1
Flags Affected				OF, SF, ZF, CF are set accordingly
				src is {adrs}:								TAG bit is set accordingly
Opcode
Instructions					16		15		14	13	12		11	10	9		8	7	6	5	4		3		2		1		0
MULSPLS An, {adrs}					0		1		1	0	0		0	1		An						adrs
						x				dma16 (for direct) or offset16 (long relative) [see section 4.13]
MULSPL S An[~], An[~]					1		1		1	0	0		1	1		An		1	1	0	1		1	0		A~			~A
Description				Perform multiplication of multiply register (MR) and value of src string. The 16
				MSBs of the ((ns + 3) ⋅ 16)-bit product are stored in the product high (PH)
				register. The 16 LSBs of the product (contained in product low (PL) register)
				stored in An string.
Syntax							Description
MULTPLS An, {adrs}							Multiply MR by effective data memory string, move PL to An
MULTPLS An[~], An[~]							Multiply MR by An[~] string, move PL to An[~]
See Also				MULTPL, MULAPL, MULAPLS, MULSPL, MULSPLS
Example 4.14.45.1				MULTPLS A0, *R3++

Multiply the contents of R3 with MR register and store PL in accumulator string A0. Increment R3 by 2.

Example 4.14.45.2 MULTPLS A2, A2~

Multiply MR register to accumulator string A2~ and store PL to accumulator string A2.

Assembly Language Instructions 4-139