Difference between revisions of "NEO-AES4-1 board"

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[[File:4-1.jpg|thumb|Neo Geo AES 4-1 board]]
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Seems to be the sixth and latest board revision.
 
Seems to be the sixth and latest board revision.
  
 
Some (all ?) units appear to be heavily shielded with a metal cover and conductive coating on the plastic shell.
 
Some (all ?) units appear to be heavily shielded with a metal cover and conductive coating on the plastic shell.
  
Differences with previous revisions:
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=Differences with the [[NEO-AES3-6 board]]=
  
 
* The power supply circuit was (finally) moved next to the power connector.
 
* The power supply circuit was (finally) moved next to the power connector.
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* {{Sig|BNKB|BNKB}}/RBNKB jumper.
 
* {{Sig|BNKB|BNKB}}/RBNKB jumper.
  
[[File:4-1.jpg|800px]]
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[[Category:Cartridge_systems]]

Latest revision as of 11:34, 29 December 2018

Neo Geo AES 4-1 board

Seems to be the sixth and latest board revision.

Some (all ?) units appear to be heavily shielded with a metal cover and conductive coating on the plastic shell.

Differences with the NEO-AES3-6 board

  • The power supply circuit was (finally) moved next to the power connector.
  • Most through-hole chips were replaced by their surface mount versions.
  • The PLCC version of the 68k CPU was used. Also tiny Z80.
  • The SP1 ROM is an OTP part.
  • Resistor networks were added on bus lines, maybe as an attempt to reduce radiated noise.
  • TC9018P composite sync generator.
  • SYNC/NEW-SYNC jumper.
  • BNKB/RBNKB jumper.