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Intel (i) is an enhanced version of Intel microprocessor. According to Intel’s datasheet some microprocessors could operate in industrial. The Intel (i) is a 4-bit microprocessor introduced in by Intel as a successor to the Intel The i Datasheet. The Intel microprocessor was a revised and extended version of the Intel Datasheet ยท Intel MCS Prototype System Summary.

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The idea was that any mission-critical context should be kept in the first 8, as when an interrupt occurred it would not only push an exception handler address onto the stack but also switch Index Register banks, automatically preserving that state until the handler returned control to the normal program flow – assuming, of course, you hadn’t already datashete swapped banks in order to make use of the additional internal memory space.

Add the previously selected RAM main memory character to the accumulator with carry. The Intel was used in a large number of early video games and gaming machines such as the Bailey shuffleboard.

Index registers 0 – 7, 8 – 15 will be available for program use. The program counter and send register control are restored to their pre-interrupt value. The content of the 0 index register pair is unaltered unless index register 0 was designated.

The effective address counter is decremented and program itnel is returned to the location saved by the forced JMS which occurred at the beginning of the interrupt routine.

Intel 4040

P rogram C ounter. DCL intle latched until it is changed. The values to be set in the registers should be stored in the data area as the transferinterrupt controller or bus controller and can be directly accessed by the CPU.


External links [ edit ] i Datasheet.

White ceramic Intel C microprocessor with grey traces. The actual instruction mix wasn’t specified, so without both source code and a list of instruction execution times it’s impossible to be sure.

The accumulator content is written into the previously selected RAM main memory character location. Faggin put his sign on the microprocessor; in a corner of the die you can read “F. Shima designed the Busicom calculator firmware and assisted Faggin during the first six months of the implementation.

When more than one page of RAM bytes is being written, an output port must be used to supply additional address lines for higher order addresses. In February Intel releases the microprocessor to the market. The 8 bit content of the index register is unaffected. The plastic P variant. For the selected chip and register, however, status character locations are selected by the instruction code OPA. The content of the previously selected RAM main memory character is subtracted from the accumulator with borrow.

Up 1 level in stack.

Intel has5. Intel architectural block diagram. Select index register bank 1. The was subsequently designed using silicon gate technology and built of approximately 2, transistors [1] and was followed the next year by the first ever 8-bit microprocessor, the 3, transistor and thea revised and improved The result is placed in the accumulator and the carry flip-flop is unaffected.

Write the contents inteel the accumulator into the previously selected RAM status character 2. Designate ROM bank 1.

– Intel – WikiChip

The content of the previously selected RAM main memory character is transferred to the accumulator. This is further emphasised by the SRAM’s claim to be “used for writeable Program Memory”, something not achievable by a bare or The Intel was designed by physically cutting sheets of Rubylith into thin strips to lay out the circuits to be printed, a process made obsolete by current computer graphic design capabilities. The is part of the Intel MCS chipset. Information in this document is provided in connection with Intel products.


If the accumulator content has more than one bit on, the accumulator will be set to 15 to indicate error. Packaged in a pin ceramic dual in-line packagethe was the first commercially available computer processor designed and manufactured by chip maker Datxsheetwhich had previously made semiconductor memory chips.

cpu Intel datasheet & applicatoin notes – Datasheet Archive

The package size was also increased to 24 pins. The IN line and PM line are also active during this instruction. Three other CPU chip designs were done at about the same time: The myth was repeated by Federico Faggin himself in a lecture for the Computer History Museum in The content of the previously selected RAM main memory character is added to the accumulator with carry. The index register bank select flip-flop is reset.

Write the contents of the accumulator into the previously selected ROM output port. Designate ROM bank 0.

Following the success of the IntelIntel released thean enhanced version. The bank switch of the can access an additional 8. X 1 will contain the 4 bit accumulator contents. The address of the next instruction in sequence following JMS return address is saved in the push down stack.

Program control is transferred to the instruction at that address on the same page same ROM where the JIN instruction is located.