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https://opencores.org/ocsvn/lxp32/lxp32/trunk
Subversion Repositories lxp32
[/] [lxp32/] [trunk/] [verify/] [lxp32/] [src/] [firmware/] [test014.asm] - Rev 12
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/*
* Test "hlt" instruction
*/
lc r100, 0x10000000 // test result output pointer
lc r101, halt
lc r103, 0x20000000 // timer: number of pulses (0xFFFFFFFF - infinite)
lc r104, 0x20000004 // timer: delay between pulses (in cycles)
lc iv0, timer_handler
mov r10, 2
mov cr, 1 // enable interrupt 0
lc r0, 1000
sw r104, r0
sw r103, 1
hlt
sw r100, r10 // r10 will be 2 if interrupt hasn't been called, which is a failure code
halt:
hlt
jmp r101 // halt
timer_handler:
mov r10, 1
iret
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