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blog:386_shootout_umc [2021/02/09 16:31] – [Motherboard Data & Variants] john | blog:386_shootout_umc [2021/02/12 10:53] – [UMC UM82C481] john | ||
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A 386DX/486 motherboard acquired from an auction, with information, | A 386DX/486 motherboard acquired from an auction, with information, | ||
+ | |||
+ | **[Update 12/ | ||
===== Initial Thoughts ===== | ===== Initial Thoughts ===== | ||
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^ Item | ^ Item | ||
- | | Form Factor | + | | Form Factor |
- | | Chipset | + | | Chipset |
| Dimensions | | Dimensions | ||
- | | Maximum RAM | | | + | | Maximum RAM | 8x 30pin SIMM; unknown capacity, but presumably 8x4MB to make 32MB | |
- | | Cache | | | + | | Cache | Yes; unknown capacity |
- | | FPU | | | + | | FPU | Yes, PGA socket; 387 | |
- | | CPU Type | + | | CPU Type |
- | | CPU Speeds | + | | CPU Speeds |
- | | Expansion | + | | Expansion |
- | Motherboard data can be found in the following locations: | ||
- | | ||
The UMC82C481 memory controller as fitted to this board supports the provision of UMB memory via **The Last Byte** memory manager. As noted in the file // | The UMC82C481 memory controller as fitted to this board supports the provision of UMB memory via **The Last Byte** memory manager. As noted in the file // | ||
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* {{ : | * {{ : | ||
+ | * {{ : | ||
+ | These UMB regions can then be used to load drivers and TSR's high, using the //highdvr// and //hightsr// utility included with The Last Byte memory manager similar to the MS-DOS commands // | ||
===== Configuration ===== | ===== Configuration ===== | ||