Previous Page Single Page Next Page  

* NAME: AB16-CCT4 DOC 70180658000 REV H PAGE 89

4209 07437 0 10 07434 JST *-3 4210 07440 -0 10 07432 JST* WAIT RETURN 4211 * 4212 * 4213 * 4214 * CAUSE AN INTERRUPT TO RESET PMI 4215 * 4216 07441 101000 X799 NOP 4217 07442 001001 INH INHIBIT RUPTS 4218 07443 0 02 07534 LDA ='77 4219 07444 0 04 00003 STA 3 INITIALIZE STACK FOR UNDERFLOW 4220 07445 0 02 07533 LDA ='4000 4221 07446 171020 OTK 4222 07447 0 01 07450 JMP *+1 SET UNDERFLOW RUPT MASK BIT 4223 07450 000013 EXA 4224 07451 0 10 07452 JST *+1 FORM RUPT RETURN ADDRESS 4225 07452 0 000000 DAC ** 4226 07453 0 02 07452 LDA *-1 4227 07454 0 06 07540 ADD ='14 4228 07455 0 04 00057 STA '57 SET UP FOR RUPT RETURN 4229 07456 000011 DXA 4230 07457 0 01 07460 JMP *+1 NORMAL MODE 4231 07460 101000 NOP 4232 07461 0 12 00003 IRS 3 CAUSE STACK UNDERFLOW BY 'IRS' INSTRUCTION 4233 07462 101000 NOP 4234 07463 101000 NOP 4235 07464 000000 HLT DID NOT GO TO RUPT 4236 07465 100000 SKP 4237 * 4238 * 4239 07466 0 000000 DAC ** RUPT ENTRY 4240 07467 000011 DXA 4241 07470 0 01 07471 JMP *+1 NORMAL MODE 4242 07471 0 02 07522 LDA =-1 PUT ALL ONES IN 'A' 4243 07472 000043 INK 4244 07473 0 03 07521 ANA ='20200 4245 07474 100040 SZE 4246 07475 000000 HLT SOME BITS SET - CHECK A-REG 4247 * 4248 07476 140040 CRA 4249 07477 74 0020 SMK '20 4250 07500 171020 OTK 4251 07501 0 01 07502 JMP *+1 CLEAR ALL RUPT CONDITIONS 4252 07502 101000 NOP 4253 07503 101000 NOP 4254 07504 -0 01 07006 JMP* X7IT END SECTOR 7 TESTS, RETURN 4255 * 4256 07505 002000 BIT6 OCT 2000 SUPPRESS RUPT DEFAULT FLOP BIT 4257 07506 000400 BIT8 OCT 400 JMP/JST TRACE RUPT MASK BIT 4258 07507 000200 BIT9 OCT 200 PRIVILEGED/ENB RUPT FLOP BIT
  Previous Page Single Page Next Page