315-5309: Difference between revisions

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Line 13: Line 13:
*FREQ: +5V = 60Hz, 0V = 50Hz
*FREQ: +5V = 60Hz, 0V = 50Hz
*LANG: +5V = English, 0V = Japanese
*LANG: +5V = English, 0V = Japanese
*A0-A6: 68K address bus
*D0-D15: 68K data bus
*ZA0-ZA7: Z80 address bus
*ZD0-ZD7: Z80 data bus

Revision as of 14:22, 1 April 2012

The 315-5309 is found on early revision of the MegaDrive I.

It handle the IO port, the version register

Pinout

(Max size:File:315-5309_pinout.png)

OpenOffice Draw file : File:315-5309.odg

  • IOX_X: To the DE-9 port
  • FREQ: +5V = 60Hz, 0V = 50Hz
  • LANG: +5V = English, 0V = Japanese
  • A0-A6: 68K address bus
  • D0-D15: 68K data bus
  • ZA0-ZA7: Z80 address bus
  • ZD0-ZD7: Z80 data bus