Japanese SVGA Adapter
Win9x/NT have built-in drivers.
84G7129 SVGA-CL28 Adapter/A BIOS (26-May-1994)
Originally equipped in PS/55 Model 5521-YSB/YWB. Not available as an OBI.
U2 M5M27C256AFP OTP ROM (soldered) BIOS 84G7129
U7,8 Following chips are used on the
Japanese SVGA adapters:
Circuit around GD5428 and LM334 (by T. Sunagawa)
This adapter is "Flicker Free" (the current source capacitor C15 is installed with the correct polarity).
Compare with the 1MB Short SVGA (US/EMEA).
Memory Upgrade (2 MB)
This adapter can be upgraded to 2 MB of video RAM (soldering required).
Pin 14 of each unpopulated DRAM chip is already connected to pin 141 of U1 (CL5428) through 100 ohm resistor R26 (Reply Video Board uses 33 ohms resistor for this connection).
AdapterId 917A SVGA-CL28 Adapter/A
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