PB520R Motherboard Sockets

'U' Location Description
U13 J1 EMPTY
U12 F1 74F245
U12 H1 74LS273
U12 H2 EMPTY
U12 H3 EMPTY
U11 G4 28F001 FLASH
U11 H1 EMPTY
U11 G1 74F244
U11 G2 74LS244
U11 D1 CL-GD5434 VIDEO CONTROLLER
U11 A1 VRAM UPGRADE SOCKET
U11 B1 VRAM
U10 G2 82C42PE
U10 G1 74F060
U10 H1 DS12887
U10 B1 VRAM
U10 A1 VRAM UPGRADE SOCKET
U9 C1 XAC402
U9 H1 75232
U9 H1 75232
U8 G1 820911A
U8 H2 74LS244
U8 B1 AV9154 CLOCK GENERATOR
U8 C1 74F74
U8 D1 PCI0640B
U8 H1 74LS245
U7 B1 74FR244
U7 G1 82378
U7 H1 74LS245
U6 J1 74F00
U6 A1 74F373
U6 B1 CACHE 256K
U6 B2 CACHE 256K
U6 C1 82433LX
U5 A1 74F373
U5 B1 CACHE 256K
U5 B2 CACHE 256K
U5 G1 74F138
U5 H3 74F04
U5 H4 XAC402
U5 J3 74F32
U5 H1 74F125
U5 H2 74F138
U5 J1 74F32
U5 J2 74F07
U4 A1 CACHE 256K
U4 B1 CACHE 256K
U4 B2 CACHE 256K
U4 C1 CACHE 256K
U4 D1 82433LS
U4 G2 74F244
U4 H1 1MX4 DRAM
U4 H2 1MX4 DRAM
U4 J1 1MX4 DRAM
U4 J2 1MX4 DRAM
U4 G1 EMPTY
U3 H3 1MX4 DRAM
U3 H4 1MX4 DRAM
U3 J3 1MX4 DRAM
U3 J4 1MX4 DRAM
U3 G1 74F244
U3 H1 1MX4 DRAM
U3 H2 1MX4 DRAM
U3 J1 1MX4 DRAM
U3 H2 1MX4 DRAM
U2 G2 74F244
U2 H1 1MX4 DRAM
U2 H2 1MX4 DRAM
U2 J1 1MX4 DRAM
U2 J2 1MX4 DRAM
U2 G1 74F244
U2 G2 74F244
U2 B1 CPU SOCKET
U1 H1 EMPTY
U1 J1 EMPTY

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