low.s

/ low core

br4 = 200
br5 = 240
br6 = 300
br7 = 340

. = 0^.
        br      1f
        4

/ trap vectors
        trap; br7+0.            / bus error
        trap; br7+1.            / illegal instruction
        trap; br7+2.            / bpt-trace trap
        trap; br7+3.            / iot trap
        trap; br7+4.            / power fail
        trap; br7+5.            / emulator trap
        trap; br7+6.            / system entry

. = 40^.
.globl  start, dump
1:      jmp     start
        jmp     dump

. = 60^.
        klin; br4
        klou; br4

. = 70^.
        pcin; br4
        pcou; br4

. = 100^.
        kwlp; br6
        kwlp; br6

. = 114^.
        trap; br7+7.            / 11/70 parity

. = 200^.
        lpou; br4

. = 220^.
        rkio; br5

. = 240^.
        trap; br7+7.            / programmed interrupt
        trap; br7+8.            / floating point
        trap; br7+9.            / segmentation violation

//////////////////////////////////////////////////////
/               interface code to C
//////////////////////////////////////////////////////

.globl  call, trap

.globl  _klrint
klin:   jsr     r0,call; _klrint

.globl  _klxint
klou:   jsr     r0,call; _klxint

.globl  _pcrint
pcin:   jsr     r0,call; _pcrint

.globl  _pcpint
pcou:   jsr     r0,call; _pcpint

.globl  _clock
kwlp:   jsr     r0,call; _clock


.globl  _lpintr
lpou:   jsr     r0,call; _lpintr

.globl  _rkintr
rkio:   jsr     r0,call; _rkintr