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

Data stored in the register can have either of two formats, depending upon whether thelast convert command requested automatic gain or selected a particular amplifier gain. Ifautomatic gain was requested, the 16 bits of data have the format:01 13 15S Data R R R11 I 1 I 1 1 1 1 1 I 1 1•••■■■■emiso, "••■•••,■••=1., •••■■•■•,,mi.."Twelve bits of binary data plus sign (S bit) are returned. The RRR field indicates whichamplifier gain was automatically selected by the amplifier. (Refer to the table in the"Convert Analog Input" command description.) If RRR =000, an overload conditionoccurred with the automatic gain selection.If a particular amplifier gain was selected by the last convert command, the 16 bitsof data have the format:0 1 15S Data OL. 1 1 1 1 1 1I I 1 1 I I••■•••••,,,•■•,Fourteen 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 MA00001 XXX 01000000000110010 0 xx xxxxlilt ii II 1111 III 1 I 111 11111■••■••■,•••••" •••••••■•■•■•■• ■••••■,„.■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.13-12 GA34-0003