List:
List of all special registers and their internal code numbers.
rA, arithmetic status register [21];
rB, bootstrap register (trip) [0];
rC, continuation register [8];
rD, dividend register [1];
rE, epsilon register [2];
rF, failure location register [22];
rG, global threshold register [19];
rH, himult register [3];
rI, interval counter [12];
rJ, return-jump register [4];
rK, interrupt mask register [15];
rL, local threshold register [20];
rM, multiplex mask register [5];
rN, serial number [9];
rO, register stack offset [10];
rP, prediction register [23];
rQ, interrupt request register [16];
rR, remainder register [6];
rS, register stack pointer [11];
rT, trap address register [13];
rU, usage counter [17];
rV, virtual translation register [18];
rW, where-interrupted register (trip) [24];
rX, execution register (trip) [25];
rY, Y operand (trip) [26];
rZ, Z operand (trip) [27];
rBB, bootstrap register (trap) [7];
rTT, dynamic trap address register [14];
rWW, where-interrupted register (trap) [28];
rXX, execution register (trap) [29];
rYY, Y operand (trap) [30];
rZZ, Z operand (trap) [31];
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