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我用的ASD1.2,出现一个问题:

USR_STACK % USR_STACK_SIZE

UDF_STACK % UDF_STACK_SIZE

ABT_STACK % ABT_STACK_SIZE

IRQ_STACK % IRQ_STACK_SIZE

FIQ_STACK % FIQ_STACK_SIZE

SUP_STACK % SUP_STACK_SIZE

出现这样的错误:

Error : A1163E: Unknown opcode
nbc_init.s line 336

336 00000000 USR_STACK % USR_STACK_SIZE

Error : A1163E: Unknown opcode
nbc_init.s line 338

338 00000000 UDF_STACK % UDF_STACK_SIZE

Error : A1163E: Unknown opcode
nbc_init.s line 340

340 00000000 ABT_STACK % ABT_STACK_SIZE

Error : A1163E: Unknown opcode
nbc_init.s line 342

342 00000000 IRQ_STACK % IRQ_STACK_SIZE

Error : A1163E: Unknown opcode
nbc_init.s line 344

344 00000000 FIQ_STACK % FIQ_STACK_SIZE

Error : A1163E: Unknown opcode
nbc_init.s line 346

346 00000000 SUP_STACK % SUP_STACK_SIZE

6 Errors, 0 Warnings

请指教,(所有变量都已经定义).