更新软件代码

tb/sw/src/slvStartup.S

@@ -9,23 +9,16 @@
 
 
 _prog_start:
-	li sp, 0
-	picorv32_maskirq_insn(zero, zero)
+	li sp, 0x40001000
 
 	call main
 
-
 	ecall
 
 
 .balign 32
 .section .trap_entry, "ax", %progbits
 trap_entry:
-	# q0 return address
-	# q1 bitmask of all IRQ to be handled, may be more than one IRQ 
-	# q2 q3 unused, can be use as temp storage register
-
-	# q寄存器已经禁用， Without the q-registers, the irq return address will be stored in x3 (gp) and the IRQ bitmask in x4 (tp),
 
 	# io.interrupt(0) := intTxError
 	# io.interrupt(1) := intRxError
@@ -33,15 +26,5 @@ trap_entry:
 	# io.interrupt(3) := intRxEnd
 
 
-	or sp, sp, x4
-
-	andi x4, x4, 0x2
-	beqz x4, 1f
-	li x4, 0
-	sw x3, 0x400(x0)
-
-	1:
-	picorv32_retirq_insn()
-