p1_rom.txt

来自「jam CPU模拟器的设计与实现.其中包含设计文档」· 文本 代码 · 共 37 行

P1:	JUMP	R30, R0, INIT	-- Call init subroutine, link in R30 (=P1+4)
0
0111 11 11110 00000 0000 0000 0000 1110

	ADDI	R1, R0, 12		-- R1 = 12, index counter
4	
0000 01 00001 00000 0000 0000 0000 1100
	
	ADDI	R4, R0, R0		-- R4 = 0, accumulator
8	
0000 00 00100 00000 00000
	
L1:	LW		R2, R1, 1024	-- Read from array at address 1024
12
1000 11 00010 00001 0000 0001 0000 0000

	LW		R3, R1, 1040	-- Read from array at address 1040
16
1000 11 00011 00001 0000 0001 0000 0100

	MUL		R5, R2, R3		-- Multiply array elements
20
0010 00 00101 00010 00011
	
	ADDI	R1, R1, -4		-- Compute next index
24	
0000 01 00001 00001 1111 1111 1111 1100
	
	ADD		R4, R4, R5		-- Add product to accumulator
28	
0000 00 00100 00100 00101
	
	CMP		R5, R0, R1		-- Check if next index < 0
32	
0110 00 00101 00000 00001
	
	BNE		R5, R0, -28		-- Branch to L1 if next index