Processor Complex Identification
Type 0 | Type 1 | Type 2 | Type 3 | Type 4
-x0x "0 Minus" 386DX 20 MHz, FRU: 64F0782, FCC ID: ANO386201A
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No L2 cache
Supports 1, 2 MB 85 ns (80 ns?)
8 MB FPM max (?), 24-bit DMA
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-x0x 386DX 20 MHz, FRU: 04G3884, FCC ID: ANO38620C1A
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64 KB 25 ns L2 cache
Supports 1, 2 MB 85 ns (80 ns?)
8 MB FPM max (?), 24-bit DMA
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-xGx 486SX 20 MHz, FRU: 64F0201, FCC ID: ANOIBM486A20
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No L2 cache connector
2, 4, 8 MB 70 ns FPM matched pairs
64 MB FPM max, 24-bit DMA
Some with bad DMA controller
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-xJx 486DX 25 MHz, FRU: 64F0201, 84F8036, FCC ID: ANOIBM486A25
-xKx 486DX 33 MHz, FRU: 64F0198, 84F9356, FCC ID: ANOIBM486A33
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2, 4, 8 MB FPM matched pairs
64 MB FPM max, 24-bit DMA
Some with bad DMA controller
Optional 256 KB 17 ns WT L2 cache
(L2 board FRU: 6451095, 64F0199)
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Upgrade DX-50 486DX 50 MHz, FRU: 92F0048, FCC ID: ANOIBM486A50
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2, 4, 8 MB FPM matched pairs
64 MB FPM max, 24-bit DMA
Some with bad DMA controller
Standard 256 KB 15 ns WT L2 cache
(L2 board FRU: 92F0050)
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Upgrade DX2-66 486DX2 66 MHz, FRU: 92F0145, FCC ID: ANOIBM486B33
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2, 4, 8 MB FPM matched pairs
64 MB FPM max
Optional 256 KB 17 ns WT L2 cache
(L2 board FRU: 6451095, 64F0199)
Flash based, supports >1 GB IML
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-xLx 486DX2 50 MHz, FRU: 92F0161, FCC ID: ANOIBM486SXB25 (same as xHx)
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No L2 cache
2, 4, 8 MB 70 ns FPM SIMMs
FPM single, matched, mixed pairs
64 MB FPM max, 24-bit DMA
Some with bad DMA controller
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-xMx 486DX 50 MHz, FRU: 82G2484, 57F1597, FCC ID: ANOIBM486B50
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Two board construction
256 KB L2 WT cache
SIMMs in matched pairs
64 MB ECC -or- FPM max
32-bit DMA
Some with bad streamer support
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