The operand fields of RR-format instructions designate two registers, with the following exceptions:
*--------*----*----* |Op Code | R1 | R2 | *--------*----*----* 0 8 12 15
Symbols used to represent registers in RR-format instructions (see INDEX and REG2 in the instruction labeled ALPHA2 below) are assumed to be equated to absolute values between 0 and 15.
Symbols used to represent immediate values in SVC instructions (see TEN in the instruction labeled DELTA2 below) are assumed to be equated to absolute values between 0 and 255.
Examples:
ALPHA1 LR 1,2 ALPHA2 LR INDEX,REG2 GAMMA1 BCR 8,12 DELTA1 SVC 200 DELTA2 SVC TEN
When assembled, the object code of the instruction labeled ALPHA1, in hexadecimal, is:
1812
where:
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