High Level Assembler - Opcodes overview, Extension Sets B97x

The table below lists all documented extended mnemonics for instructions:

Opcode Mnemonic Description Table Type
B972 CRT Compare Register and Trap Extended Mnemonics
B973 CLRT Compare Logical Register and Trap Extended Mnemonics

Each extended mnemonic links to a text section with some additional info on the pertinent pseudo opcode.

Opcode Assignments.

Please note that the creation of descriptions for all individual instructions is an ongoing process. As yet no such descriptions have been created for the opcodes on this page.

Extended Mnemonics for instructions in extension set B9

All instructions in this table are four bytes in length. The first byte always has a value of X'B9'. The second byte of the opcode designates the exact instruction and has a value in the range X'70' thru X'7F'. This byte is the second byte of the instruction; its second digit is the first nibble in the table below.

The second nibble in the table indicates the mask value for the condition code for the pertinent instructions. In the assembled instructions this is the first half of the third byte.

Extended Mnemonics for CRT (Compare Register and Trap)

B972 0 1 2 3 4 5 6 7 8 9 A B C D E F
      CRTH   CRTL   CRTNE   CRTE   CRTNL   CRTNH      


Extended Mnemonics for CLRT (Compare Logical Register and Trap)

B973 0 1 2 3 4 5 6 7 8 9 A B C D E F


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