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 | "Descrizione" di RS232 (1987 pt) | 10-feb-2016 14:32 |
Consenso relazione: 9 Media gradimento: 9 Numero utenti: 1
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Zilog Z0840006PSC CPU a 6 bMHz, appartiene alla serie Z80 ed è stato tra i chip più diffusi sia nei personal computer che in elettronica industriale.
Alcune caratteristiche in inglese
Programming features contain 208 bits of read/write memory that are accessible to the programmer. The internal registers include an accumulator and six 8-bit registers that can be paired as three 16-bit registers. In addition to general registers, a 16-bit stack-pointer, 16-bit program-counter, and two 16-bit index registers are provided.
The core has a 16-bit address bus capable of directly accessing 64kB of memory space. It has 252 root instructions with the reserved 4 bytes as prefixes, and accesses an additional 308 instructions.
The microcode-free design was developed for reuse in ASIC and FPGA implementations. It is strictly synchronous, with no internal tri-states and a synchronous reset.
Control Unit
- 8-bit Instruction decoder
Arithmetic-Logic Unit
- 8-bit arithmetic and logical operations Symbol
- 16-bit arithmetic operations
- Boolean manipulations
Register File Unit
- Duplicate set of both general purpose and flag registers
- Two 16-bit index registers
Interrupt Controller
- Three modes of maskable interrupts
- Non maskable interrupt
External Memory interface
- Address up to 64 KB of program memory
- Address up to 64 KB of data memory
- Address up to 64 KB of input/output devices
On-core dynamic memory refresh counter
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