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https://opencores.org/ocsvn/eco32/eco32/trunk
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[/] [eco32/] [trunk/] [hwtests/] [memtest2/] [memtest2.s] - Rev 277
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; ; memtest2.s -- memory test ; ; $2 temporary ; $3 tbl address ; $4 mem address ; $5 tbl count ; $6 mem count ; $7 error ; $8 I/O base ; $9 value read ; $10 reference value .set mem_base,0xC0000000 .set mem_size,1024*1024 .set io_base,0xF0300000 ; ; write memory ; write: add $4,$0,mem_base add $6,$0,mem_size add $3,$0,tbl add $5,$0,257 wrloop: ldbu $2,$3,0 stb $2,$4,0 add $3,$3,1 sub $5,$5,1 bne $5,$0,wrloop1 add $3,$0,tbl add $5,$0,257 wrloop1: add $4,$4,1 sub $6,$6,1 bne $6,$0,wrloop ; ; read memory ; read: add $4,$0,mem_base add $6,$0,mem_size add $3,$0,tbl add $5,$0,257 add $7,$0,0 rdloop: ; always check byte byte: ldbu $9,$4,0 ldbu $10,$3,0 beq $9,$10,byteok add $7,$0,1 byteok: ; possibly check halfword half: and $2,$4,1 bne $2,$0,halfok ldhu $9,$4,0 ldbu $10,$3,0 jal shft8 ldbu $2,$3,1 or $10,$10,$2 beq $9,$10,halfok add $7,$0,1 halfok: ; possibly check word word: and $2,$4,3 bne $2,$0,wordok ldw $9,$4,0 ldbu $10,$3,0 jal shft8 ldbu $2,$3,1 or $10,$10,$2 jal shft8 ldbu $2,$3,2 or $10,$10,$2 jal shft8 ldbu $2,$3,3 or $10,$10,$2 beq $9,$10,wordok add $7,$0,1 wordok: ; next address add $3,$3,1 sub $5,$5,1 bne $5,$0,rdloop1 add $3,$0,tbl add $5,$0,257 rdloop1: add $4,$4,1 sub $6,$6,1 bne $6,$0,rdloop ; ; show result ; bne $7,$0,error ok: add $7,$0,'.' jal out j halt error: add $7,$0,'?' jal out j halt ; ; finally, halt ; halt: j halt shft8: add $10,$10,$10 add $10,$10,$10 add $10,$10,$10 add $10,$10,$10 add $10,$10,$10 add $10,$10,$10 add $10,$10,$10 add $10,$10,$10 jr $31 out: add $8,$0,io_base out1: ldw $9,$8,8 and $9,$9,1 beq $9,$0,out1 stw $7,$8,12 jr $31 tbl: .byte 0x45,0x23,0x98,0x48,0xDC,0x5C,0x94,0x58 .byte 0x1F,0x7C,0x58,0xD7,0x41,0x1E,0xA9,0xE1 .byte 0x00,0x62,0x08,0x27,0x23,0xE9,0xCD,0x43 .byte 0x0F,0x25,0xF9,0x72,0xC2,0xD7,0xC4,0x07 .byte 0xFB,0x5D,0x50,0xD7,0xBA,0xE4,0x30,0xD9 .byte 0x61,0x89,0xB1,0xA3,0xA8,0x5A,0x84,0xA8 .byte 0xBD,0x8C,0xD0,0xE0,0x76,0x9E,0x24,0x86 .byte 0xC4,0x1D,0xF8,0x86,0xF5,0xBD,0x8D,0xF0 .byte 0x1A,0xDD,0xC8,0xD4,0xC2,0xF8,0xAD,0x23 .byte 0x82,0x5F,0xC6,0x2A,0xB9,0x4A,0xD3,0x77 .byte 0xD7,0xA4,0x58,0x4E,0x42,0x7C,0xD4,0x06 .byte 0x9A,0xCC,0x8D,0x8F,0x89,0x1B,0x7F,0xA4 .byte 0xF9,0x48,0x78,0xBB,0x40,0x26,0xDE,0xC3 .byte 0x85,0xA5,0xED,0x3F,0xF0,0xC1,0xB7,0xC7 .byte 0x65,0x0F,0x15,0xA8,0x8C,0xE9,0xAF,0x26 .byte 0xB6,0x3C,0xB6,0x40,0x57,0x35,0xE4,0x50 .byte 0x7E,0x5D,0x0B,0xBF,0x84,0xEA,0x82,0x0A .byte 0x8F,0x70,0x4A,0x7F,0x31,0x02,0x47,0x96 .byte 0x12,0x5D,0x3F,0x9E,0x47,0xEE,0xC5,0xFD .byte 0x2B,0x7B,0x3E,0x82,0xB1,0x23,0xD3,0x2F .byte 0x81,0xDF,0xEE,0x06,0xCA,0x70,0x11,0x59 .byte 0xE0,0x5B,0xD9,0x11,0x5E,0x21,0xA8,0x70 .byte 0x7E,0xE7,0x0E,0xC5,0xD6,0xD4,0xC3,0x01 .byte 0x4F,0x01,0x84,0x01,0x24,0x57,0x30,0xA5 .byte 0x37,0x1E,0xAC,0x01,0x8F,0xBD,0x5A,0x70 .byte 0x18,0x34,0x82,0x77,0x55,0x2A,0xE7,0xD3 .byte 0x12,0xF6,0x99,0xE8,0xCA,0x5C,0xEA,0x1A .byte 0x5D,0x6E,0x1B,0x82,0xC5,0x4B,0x28,0xFD .byte 0x6A,0xD4,0xFE,0xFA,0x91,0x59,0x6A,0xAA .byte 0x8D,0xEC,0x21,0xE3,0x17,0x09,0xB7,0x29 .byte 0xFF,0x50,0x12,0xC9,0xAC,0xFC,0xE3,0x0A .byte 0x6B,0xFF,0x8D,0x31,0x4A,0xB5,0x2E,0xB5 .byte 0x8A augment: .byte 0x45,0x23,0x98
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