Table of Contents

“9224 EACG is the 'new style' post 1990 yamaha datecode: 9224 = 1992 week 24, EACG = lotcode EAC, revision G”

Package

Top:

YAMAHA JAPAN
YM2151
9224 EACG

Die

Label:

2151

Not cleanly decapped (needed more time due to unusually large die), resulted in minor damage and dirty image

Map

Map @ Mit20x

  • Original pr0nscope w/ MU800

mz_mit20x2-2

  • Single (12151×9724, 40.369MiB)
  • New pr0nscope w/ USB3
  • Seeing upper right of image is missing (some aperture is occluding view?)
    • Very slight. W/ stitching its hard to see in final images since it is in overlap area between adjacent images
  • It doesn't show up too badly in pictures, but looked really bad last night
  • I was unable to significantly change it (better or worse) despite adjusting many things
  • Using ergo head

mz_mit20x2-3

  • IP
  • Switch back to trinoc head
  • Occlusion appears to be gone
  • Re-calibrate color, turn down brightness
 
mcmaster/yamaha/ym2151.txt · Last modified: 2021/03/30 00:14 by mcmaster
 
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution 4.0 International
Recent changes RSS feed Donate Powered by PHP Valid XHTML 1.0 Valid CSS Driven by DokuWiki