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A2386SX Bridgeboard Memory
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Minimum valid memory speeds
----------------------------------------------------------
| Mode | 20/25 MHz | 16 Mhz |
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| | | |
| Page mode & 1 wait state | 100ns | 120ns |
| | | |
| Page mode & 0 wait state | 80ns | 100ns |
| | | |
| Normal 1 wait state | 80ns | 100ns |
| | | |
| Normal 1 wait state | not valid | not valid |
| | | |
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The bridgeboard uses "Page Mode ZIP dram" chips for its RAM.
Two types are supported; 256K x 4 ZIP chips
or 1MB x 4 ZIP chips
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Memory Location Total Memory
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Bank 0 Bank 1 Bank 2 Bank 3 (MB)
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U302- U306- U310- U314-
305 309 313 317
256Kx4 0.5
256Kx4 256Kx4 1.0
256Kx4 256Kx4 256Kx4 1.5
256Kx4 256Kx4 256Kx4 256Kx4 2.0
256Kx4 256Kx4 1MBx4 3.0
256Kx4 256Kx4 1MBx4 1MBx4 5.0
1MBx4 2.0
1MBx4 1MBx4 4.0
1MBx4 1MBx4 1MBx4 6.0
1MBx4 1MBx4 1MBx4 1MBx4 8.0
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