12.07.2015 Views

IBM System/7 Functional Characteristics - All about the IBM 1130 ...

IBM System/7 Functional Characteristics - All about the IBM 1130 ...

IBM System/7 Functional Characteristics - All about the IBM 1130 ...

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Status Word 2.0 15Status word 1% Status word 2Residual addressNormal interrupt indicatorAttention interrupt indicatorNN+1N+2N+3N+42502 status bufferSkew checkNo holes checkHardware errorCover openFCB1 emitter syncFCB2 emitter syncTrailing edge syncRead emitterStacker fullRead checkFeed checkRead emitterFigure 17-6. 2502 status word 2Bit0 Read Emitter Sync Check (emitter pulse missing)1 Feed Check2 Read Check (<strong>All</strong> holes are not sensed at end of card)3 Stacker Full or Jam4 Read Emitter Sync Check (emitter pulse is always present)5 Trailing Edge Sync Check or Jam6 FCB2 Emitter Sync Check or Jam*7 FCB1 Emitter Sync Check or Jam*8 Cover Open9 Hardware Error (error is detected in attachment circuit)10 No Holes Check (bit is on if a hole is detected prior to column 0)11 Skew check (data is detected at emitter 16 time)12 Reserved (ZERO)13 Reserved (ZERO)14 Reserved (ZERO)15 Reserved (ZERO)*Note. This bit will be set to 1 if a circuit breaker in <strong>the</strong> 2502 fails tooperate properly. If <strong>the</strong> bit is set to 1 <strong>the</strong> 2502 may have failed to read properly.17-14 GA34-0003

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!