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Contained within the PSW are the two bit condition code, representing zero, positive, negative, overflow, and similar flags of other architectures' status registers. Conditional branch instructions test this encoded as a four bit value, with each bit representing a test of one of the four condition code values, 2 3 + 2 2 + 2 1 + 2 0. (Since IBM ...
A status register, flag register, or condition code register (CCR) is a collection of status flag bits for a processor.Examples of such registers include FLAGS register in the x86 architecture, flags in the program status word (PSW) register in the IBM System/360 architecture through z/Architecture, and the application program status register (APSR) in the ARM Cortex-A architecture.
code to indicate the type of interruption, inserted when the PSW is stored, during IPLoad, this is the address of the device from which the program was loaded [14] 32-33 Instruction Length Code length in halfwords or 0 if unavailable 34-35 Condition Code see individual instructions for encoding 36-39 Program Mask
The high-order byte of the instruction specifies the operation. Bits 9 through 15 are the op-code, and bit 8 is the value of the condition code calculation which results in the branch being taken. The low-order byte is a signed word offset relative to the current location of the program counter. This allows for forward and reverse branches in code.
In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state ...
PSW may refer to: . PSW Science, the oldest scientific society in Washington, D.C.; Personal Support Worker, Canada; PlayStation World, a UK magazine; Program status word, a control register in IBM mainframe computers
The California Code of Regulations (CCR, Cal. Code Regs. ) is the codification of the general and permanent rules and regulations (sometimes called administrative law ) announced in the California Regulatory Notice Register by California state agencies under authority from primary legislation in the California Codes .
In turn, it was the California Practice Act that served as the foundation of the California Code of Civil Procedure. New York never enacted Field's proposed civil or political codes, and belatedly enacted his proposed penal and criminal procedure codes only after California, but they were the basis of the codes enacted by California in 1872. [11]