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R6502
"Descrizione"
by CPU1 (1888 pt)
2016-Feb-11 18:57

Review Consensus: 9 Rating: 9 Number of users: 1
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La tecnologia del 6502 fu disegnata nel 1975 da MOS technology.

La CPU che ha fatto decollare Apple con il primo Apple I e successivamente con Apple II.

Inoltre fu impiegato nel Commodore, Nintendo NES, NEC PC Engine, Atari Lynx.

Il 6502 fu prodotto dalla Rockwell per la Apple (AppleI e II)e la Commodore.

Caratteristiche :

  • N-channel, silicon gate, depletion load technology
  • 8 bit parallel processing
  • 56 instructions
  • Decimal and binary arithmetic
  • Thirteen addressing modes
  • True indexing capability
  • Programmable stack pointer
  • Variable lenght stack
  • Interrupt request
  • Non-maskable interrupt
  • Use with any type of speed memory
  • 8-bit directional data bus
  • Addressable memory range of up 64K bytes
  • "Ready" input
  • DMA capability
  • Bus compatible with M6800
  • 1 MHz, 2 MHz, 3 MHz
  • Choice of external or on-chip clocks
  • On-chip clock option : External single clock input - Crystal time base input
  • Pipeline architecture
  • Single +5v supply

 

 

 

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