segment p 0000
br 0x0000$0800 always // reset vector
reti always
data 0000
reti always
data 0000
reti always // int0
data 0000
data 0000
data 0000
data 0000
data 0000
data 0000
reti always // int1
data 0000
data 0000
data 0000
data 0000
data 0000
data 0000
data 0000
reti always // int2

segment p 0800 // init
mov 0x$f000 sp // set stack pointer
mov 0x$0880 mod3 // enable interrupt
load 0x0082u8 page // configure ICU
mov 0x$1000 r0
mov r0 [page:0x0014u8] // set IRQ0 vint address low
mov 0x$8001 r0 // !mov 0x$0000 r0
mov r0 [page:0x0012u8] // set IRQ0 vint address high & context
mov 0x$0001 r0
mov r0 [page:0x000cu8] // enable IRQ0 as vint
load 0x00aau8 page
cntx s
load 0x00bbu8 page
mov 0x$0001 r0
mov 0x$8204 r1
mov r0 [r1] // trigger IRQ0
brr 0xffff always

segment p 11000 // interrup handler
mov st1 r0
load 0x0000u8 page
mov r0 [page:0x0000u8]
mov 0x$1234 r0
mov r0 [page:0x0001u8]
brr 0xffff always


segment d 0000 // signal area
data 0000 
data 0000