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

If a particular amplifier gain was selected by the last convert command, the 16 bits ofdata have the format:0 1 15S Data OLFourteen bits of binary data plus sign (S bit) are returned. The single-bit OL field isset on if an overload condition occurred with the program-selected amplifier gain.Read ADC Extended Precision0 5 8 11 16 20 26 31Op code R Fun Zeros Mod DA MA0 0 0 0 1 X XXO 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 OXXXXXX1 1 1 1 ii II 1 1 1 1 III 1 1 1 I 1 I I I 1 I0 8-F 4 0 1 9 0-3 XThis command stores in standard form (14 bits plus sign) the binary output value from theADC, when automatic amplifier gain was selected by the last convert command.The binary output value resulting from the last conversion cycle is stored in the indexregister (R), or the accumulator if R=000. The-data transferred to the register has theformat:0 1 15S Data OLFourteen bits of binary data plus sign (S bit) are returned. The single-bit OL field is seton if an overload condition occurred with the automatic amplifier gain selection. Notethat the automatically selected gain is not returned with the data. This gain can bedetermined by issuing a read-ADC command before or after the read-ADC-extendedprecisioncommand.IBM 5014 Analog Input Module Model Cl 11-5