Trailing-Edge
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PDP-10 Archives
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SRI_NIC_PERM_FS_1_19910112
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kcc-6/lib/test/tpsi20.c
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/* PSITST - hack to test PSI stuff
*/
#include "c-env.h"
#include <stdio.h>
int inthan();
main()
{ setbuf(stdout, NULL);
printf("Testing PSI ints\n");
psiset(inthan);
asm(" jrst 100\n");
}
int pcs[3*2];
int *levtab[3] = { &pcs[0], &pcs[2], &pcs[4] };
inthan(chn)
int chn;
{
printf("Interrupt on chan %d, PC = %o %o\n", chn, pcs[2], pcs[3]);
}
psiset()
{
#asm
SEARCH MONSYM
P==17
A==1
B==2
SKIPN A,-1(P) ; Get arg (procedure addr)
JRST sigo2 ; 0 = turn off
movem a,brkvec ; Save it
movsi 1,-44
xmovei 2,psivec
caige 17,
tloa 2,2 ; single-section
tlo 2,020000 ; multi-section
ilup: movem 2,chntab(1)
addi 2,1
aobjn 1,ilup
movei 1,.fhslf
jumpge 17,xsetup
move 2,[levtab,,chntab]
sir% ; Set up PSI system
jrst set5
xsetup: xmovei 2,[3
$$SECT,,levtab
$$SECT,,chntab]
xsir%
set5: eir% ; Enable it
move b,chnmsk ; Channel 1 mask
aic% ; Arm interrupt channels
; move a,[.ticco,,.ic.co]
; ati% ; Map ^O to its interrupt chan
; move a,[rt%dim+.fhslf]
; rtiw%
; tdz 3,[1B<.ticco>]
; stiw%
popj p,
sigo2: movei a,.fhslf
move b,chnmsk
dic ; disable channel
popj p,
%%DATA
chnmsk: -1
; 200000,,0 ; Channel 1 mask
brkvec: 0
chntab: block 44
psivec: repeat 44,<jsr psijsr>
psijsr: 0
jrst psiint
%%CODE
; Handle interrupt
psiint: skipn brkvec
debrk%
push p,16 ; Save ACs on stack
movsi 16,-16
push p,(16)
aobjn 16,.-1
hrrz 1,psijsr
subi 1,psivec+1 ; Find channel #
push p,1
pushj p,@brkvec
adjsp p,-1
movei 16,15 ; Restore ACs
pop p,(16)
sojge 16,.-1
pop p,16
debrk%
#endasm
}