How much memory can be connected to the 68000?
The 68000 has a 24-bit external address bus and two byte-select signals “replaced” A0. These 24 lines can therefore address 16 MB of physical memory with byte resolution.
Is 68000 byte addressable?
Is 68000 computer Byte addressable? 4. The register in 68000 can contain up to _____ bits. Explanation: None.
What is the 68000 Simulator?
The Crossware S68000NT Simulator creates a virtual 68000 microprocessor that runs on your PC. It allows you to run your 68000 program without any 68000 hardware and watch your code execute in the Windows graphic environment.
What is the function of address register inside the 68000 microprocessor?
The 68000 allows you to work with operands of 3 different sizes: bytes, words, and longwords; registers can be used to store bytes, words, or longwords.
Which of the following is a coprocessor of Motorola 68000 family?
68881 coprocessor
Which of the following is a coprocessor of Motorola 68000 family? Explanation: The 68881 coprocessor of Motorola provides floating point arithmetics. 5.
How many interrupt pins does the 68k have?
In 68k there are 256 such interrupt vectors. The interrupt vector table starts at memory address 0 and ends at address 256×4-1 = 1023 = $3ff.
What happens if the Motorola 68000 attempts to perform a word access or long word access to an odd memory address explain?
This processor will not work if the words or long words are not aligned. If we tried to transfer a word to odd address, then one byte will be in one word address. But the other half will be in a different word address. This is why the 68000 processor doesn’t have the A0 pin.
What is stack pointer in computer architecture?
A stack pointer is a small register that stores the address of the last program request in a stack. When a new data item is entered or “pushed” onto the top of a stack, the stack pointer increments to the next physical memory address, and the new item is copied to that address.
What is the clock frequency of 8087?
Intel 8087
| General information | |
|---|---|
| Designed by | Intel |
| Common manufacturer(s) | Intel AMD Cyrix |
| Performance | |
| Max. CPU clock rate | 4 MHz to 10 MHz |
When a stack segment is initialised then?
28. When a stack segment is initialized then a) SS and SP are initialized b) only SS is initialized c) only SP is initialized d) SS and SP need not be initialized Answer: a Explanation: though the Stack segment is initialized, the SS and SP pointers must be initialized.
Does Motorola make cpus?
Motorola’s Latest ColdFire(R) Processor Delivers High Performance for Cost Sensitive 32-bit Embedded Applications.
What are the .B .W and .L extensions used for?
B, . W. or . L to indicate the size of an operand. When you perform an operation on a data register, the bits taking part are the least-significant 8 or 16 bits, and the bits not taking part are unaffected.
Where can I learn 68000 assembly programming?
Assembly Tutorials: Learn 68000 Assembly Programming… With ChibiAkumas! Learn Assembly Programming… With ChibiAkumas! New Domains! Bookmark www.LearnAsm.net or www.AssemblyTutorial.com for all your Assembly programming needs! Download these to get started with my 68000 tutorials quickly and easily.
What is the size of a 68000 user register?
The 68000 User Registers Here are the important points you should know about the 68000 user registers: All the data registers, all the address registers and the Program Counter are 32-bits (4 bytes) wide. The Status Register, or SR, is 16 bits (2 bytes) wide.
Is the memory of the 68000 microcontroller bit addressable?
The memory is said to be byte-addressable, i.e. each byte within the memory has its own unique address and can be accessed directly. Note that the memory of the 68000 is not bit-addressable, which means that you cannot access data in memory bit by bit.
What is the difference between a 68k and a 68000?
The 68k was soon expanded with additional family members, implementing full 32-bit ALUs as part of the growing Motorola 68000 series. The original 68k is generally software forward-compatible with the rest of the line despite being limited to a 16-bit wide external bus.