ASR33IOL, F$R1

* O070-001-H001 (ASR33IOL) DRAWING NO. 41286032-001-01 PAGE 9

0401 * 0402 * C$SI CONVERT FROM 6 BIT TO INVISIBLE CODE 0403 * 0404 * C$SW STRIP TRAILING WORDS 0405 * 0406 * C$TF TEST FRAME 0407 * 0408 * F$ER FORTRAN ERROR ROUTINE 0409 * 0410 * F$IO FORTRAN SCANNER AND CONVERSIONS 0411 * 0412 * 0413 * ERRORS 0414 * 0415 * BL BLOCK LENGTH ERROR 0416 * CK CHECKSUM ERROR 0417 * 0418 * THESE ERRORS ARE REPORTED THROUGH C$ER (CONTROL ERROR 0419 * ROUTINE). 0420 * 0421 * EF END OF FILE ERROR 0422 * ID ILLEGAL DEVICE 0423 * 0424 * THIS ERROR IS REPORTED THROUGH F$ER (FORTRAN ERROR ROUTINE). 0425 * 0426 * PE PARITY ERROR 0427 * 0428 * THIS ERROR IS REPORTED THROUGH C$ER (CONTROL ERROR ROUTINE). 0429 * 0430 * CONTINUATION AFTER ANY OF THE ABOVE ERRORS EXCEPT ID PROCESSES THE 0431 * NEXT RECORD. CONTINUATION AFTER AN ID ERROR RETURNS CONTROL TO 0432 * THE CALLING PROGRAM. 0433 * 0434 * 0435 * METHOD 0436 * 0437 * THE MODULES ARE ORDERED SO THAT HIGHER LEVEL MODULES PRECEDE LOWER 0438 * LEVEL MODULES. 0439 * 0440 * NO REGISTER PRESERVATION IS ATTEMPTED. IT IS ASSUMED THAT THE 0441 * MODULES C$IS, C$OP, C$SI, I$AK, AND O$AK WILL NOT USE THE 0442 * X-REGISTER. 0443 * 0444 * THE FOLLOWING RECORD FORMAT IS ASSUMED: 0445 * 0446 * SOURCE: 0447 * 0448 * LINEFEED, TEXT, CARRIAGE RETURN, DC3, DEL 0449 * 0450 * (DC3 AND DEL ARE ONLY ESSENTIAL FOR PAPERTAPE)