Texas Instruments MSP50C614 manual Mulapls Multiply String and Accumulate Result, MR * src

Individual Instruction Descriptions

4.14.41 MULAPLS						Multiply String and Accumulate Result
Syntax
	[label]	name			dest, src [, mod]							Clock, clk				Word, w			With RPT, clk							Class
		MULAPLS			An, {adrs}									Table 4±46					Table 4±46							1b
		MULAPLS			An[~], An[~]								nS+3				1				nR+3					3
Execution			PH,PL ⇐			MR * src
			dest ⇐ dest + 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
MULAPLS An, {adrs}				0		1	1	0	1		1	1		An						adrs
					x			dma16 (for direct) or offset16 (long relative) [see section 4.13]
MULAPL S An[~], An[~], [next A]				1		1	1	0	0		1	1		An		1	1	0	0		1	0		A~			~A
Description			Perform multiplication of multiply register (MR) and value of src. 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) added to
			dest		string.
Syntax						Description
MULAPLS {adrs}						Multiply MR by RAM string, add PL to An
MULAPLS An[~], An[~] [, next A]						Multiply MR by An[~] string, add PL to An[~]
See Also			MULAPL, MULSPL, MULSPLS, MULTPL, MULTPLS
Example 4.14.41.1			MULAPLS A0, *R3++

Multiply MR with the content of data memory word string store at byte location pointed by R3, add accumulator string A0 to PL, and store result in accumulator A0 string. Increment R3 by 2.

Example 4.14.41.2 MULAPLS A2, A2~, ±±A

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

Assembly Language Instructions 4-135