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Package QFP48
First use 1994 ?
Used on MV1A MV1B NEO-CDM3-2_board

Dual 74HC245 octal transceivers in one chip. This chip is extensively used in CD systems to multiplex subsystem and 68k accesses to DRAMs.

Also found on late MVS boards.


Edit this pinout


Picture from MVS-Scans

On the MV1A and MV1B, one NEO-BUF chip is used as a uni-directionnal buffer for the 68k data bus. Some of these faulty chips were replaced by small passive pass-through boards by third parties, which may cause some games to crash:

  • MV1B: GA1 on the SLOT1B board
  • MV1A: GA11