The IBM System/360 (S/360) is a family of mainframe computer systems that was announced by IBM on April 7, 1964, and delivered between 1965 and 1978.[1] It was the first family of computers designed to cover both commercial and scientific applications and to cover a complete range of applications from small to large. The design distinguished between architecture and implementation, allowing IBM to release a suite of compatible designs at different prices. All but the only partially compatible Model 44 and the most expensive systems use microcode to implement the instruction set, which features 8-bit byte addressing and binary, decimal, and hexadecimal floating-point calculations.
serial number pdf architect 3 60
The implementations differed substantially, using different native data path widths, presence or absence of microcode, yet were extremely compatible. Except where specifically documented, the models were architecturally compatible. The 91, for example, was designed for scientific computing and provided out-of-order instruction execution (and could yield "imprecise interrupts" if a program trap occurred while several instructions were being read), but lacked the decimal instruction set used in commercial applications. New features could be added without violating architectural definitions: the 65 had a dual-processor version (M65MP) with extensions for inter-CPU signalling; the 85 introduced cache memory. Models 44, 75, 91, 95, and 195 were implemented with hardwired logic, rather than microcoded as all other models.
Computers that were mostly identical or compatible in terms of the machine code or architecture of the System/360 included Amdahl's 470 family (and its successors), Hitachi mainframes, the UNIVAC 9000 series,[12] Fujitsu as the Facom, the RCA Spectra 70 series,[NB 1] and the English Electric System 4.[NB 2] The System 4 machines were built under license to RCA. RCA sold the Spectra series to what was then UNIVAC, where they became the UNIVAC Series 70. UNIVAC also developed the UNIVAC Series 90 as successors to the 9000 series and Series 70.[12] The Soviet Union produced a System/360 clone named the ES EVM.[13]
The System/360 series has a computer system architecture specification.[33][34][35] This specification makes no assumptions on the implementation itself, but rather describes the interfaces and expected behavior of an implementation. The architecture describes mandatory interfaces that must be available on all implementations, and optional interfaces. Some aspects of this architecture are:
Binary arithmetic and logical operations are performed as register-to-register and as memory-to-register/register-to-memory as a standard feature. If the Commercial Instruction Set option was installed, packed decimal arithmetic could be performed as memory-to-memory with some memory-to-register operations. The Scientific Instruction Set feature, if installed, provided access to four floating-point registers that could be programmed for either 32-bit or 64-bit floating-point operations. The Models 85 and 195 could also operate on 128-bit extended-precision floating-point numbers stored in pairs of floating-point registers, and software provided emulation in other models. The System/360 used an 8-bit byte, 32-bit word, 64-bit double-word, and 4-bit nibble. Machine instructions had operators with operands, which could contain register numbers or memory addresses. This complex combination of instruction options resulted in a variety of instruction lengths and formats.
A number of these SLT modules were then flip chip mounted onto a small multi-layer printed circuit "SLT card". Each card had one or two sockets on one edge that plugged onto pins on one of the computer's "SLT boards". This was the reverse of how most other company's cards were mounted, where the cards had pins or printed contact areas and plugged into sockets on the computer's boards.
The larger models used Operating System/360 (OS/360). IBM developed several levels of OS/360, with increasingly powerful features: Primary Control Program (PCP), Multiprogramming with a Fixed number of Tasks (MFT), and Multiprogramming with a Variable number of Tasks (MVT). MVT took a long time to develop into a usable system, and the less ambitious MFT was widely used. PCP was used on intermediate machines too small to run MFT well, and on larger machines before MFT was available; the final releases of OS/360 included only MFT and MVT. For the System/370 and later machines, MFT evolved into OS/VS1, while MVT evolved into OS/VS2 (SVS) (Single Virtual Storage), then various versions of MVS (Multiple Virtual Storage) culminating in the current z/OS.
IBM created a new naming system for the new components created for System/360, although well-known old names, like IBM 1403 and IBM 1052, were retained. In this new naming system, components were given four-digit numbers starting with 2. The second digit described the type of component, as follows:
In addition, System/360 computers could use certain peripherals that were originally developed for earlier computers. These earlier peripherals used a different numbering system, such as the IBM 1403 chain printer. The 1403, an extremely reliable device that had already earned a reputation as a workhorse, was sold as the 1403-N1 when adapted for the System/360.
UFCs that have been unified for use by all participating agencies have no alphabetical letter at the end of the document number. UFCs that are agency-specific have an alphabetical letter (or letters) at the end of the document. A document that has a letter "A" indicates USACE, an "N" indicates NAVFAC and an "F" indicates AFCEC. A combination of two letters indicates that the document is used by two agencies.
The 15-inch model has a number pad, which is something that's really not for me. I'd much prefer that real estate be used by speakers flanking the keyboard. It's a fairly narrow number pad though, so even if you don't like it, it's not too hard to ignore.
The higher TDP isn't all that's different with 12th-gen. These processors have a whole new hybrid architecture, with big P-cores and little E-cores, using a scheduler that Intel calls Thread Director to decide which tasks need which cores. In eighth- through 11th-gen U-series processors, we've seen four cores and eight threads, but with this one, we've got 12 cores and 16 threads, including four P-cores.
The phone number listed in some of the Norton scam emails was 760-248-4214. We called the number knowing that the whole thing was a ruse. We were connected to a scammer who may have been located in a foreign call center. The scammer asked for the invoice number in the email.
One Norton scam email we reviewed was from jamgre549@gmail.com and copied nortoncc2021@outlook.com. It claimed that an "annual product membership" for Norton Total Protection had been renewed. The email also listed the same phone number that began with the 760 area code. The email addresses and phone number were all managed by scammers:
Another Norton scam email was from sarwoo846@gmail.com. It mentioned Norton Total All Round Security. One little red flag in the fake product name was the fact that the scammers chose the words "All Round" instead of "All Around." Once again, nortoncc2021@outlook.com was copied onto the email, and the same phone number was there too. To restate, these email addresses and the phone number were all part of the scam and were not managed by Norton:
The scammer's phone number was emailed as 804-742-0254. We called the number but did not receive an answer. The goal here was once again to lure unsuspecting victims to contact the scammers to try to obtain a refund. This would again result in the theft of money from the consumer's financial accounts.
This example claimed to come from the company Intuit from quickbooks@notification.intuit.com. However, a check of the email's information showed it likely came from genstjeni667890@outlook.com. The email address tester@doli.com was also copied in. The phone number listed was 888-913-5992: 2ff7e9595c
Comments