Uploaded May 2025 | Updated September 2026, 2 weeks ago

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In this video, I will explain how the Sound Blaster AWE64 access the memory that is attached via two pin headers. Why are there four GAL chips on the original memory expansion board, and how we can design our own memory board for the Sound Blaster AWE64.

The Rhapsody Game: bitsundbolts.com/2025/05/14/play-the-rhapsody-game

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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 The AWE64 memory interface
00:50 Electrical signals from the AWE64
05:14 The 24MB expansion on the AWE64 Gold
05:59 The 1Mx16 memory chips
07:08 The role of the GAL chips
07:53 Brilliant.org
09:00 The Rhapsody 4Mx4 memory chips
11:54 The Rhapsody GAL Equations
13:15 The Rhapsody memory chip layout
17:27 The Rhapsody Game