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| blog:286_shootout_vlsi_vl82c311l [2021/04/23 14:08] – [Further Testing] john | blog:286_shootout_vlsi_vl82c311l [2021/04/23 14:09] (current) – [Further Testing] john |
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| //This doesn't seem correct//. The processor is a 20MHz unit, and is being driven, as is normal on a 286, by a standard DIL can oscillator of 2x the processor frequency (i.e. 40MHz). The definition for pin 31 is that is divided by 2 internally within the processor to generate the processor clock... that would mean the processor is only at 5MHz. Unless I misunderstand the datasheet, something is drastically wrong here. | //This doesn't seem correct//. The processor is a 20MHz unit, and is being driven, as is normal on a 286, by a standard DIL can oscillator of 2x the processor frequency (i.e. 40MHz). The definition for pin 31 is that it //"is divided by 2 internally within the processor to generate the processor clock"// (from the {{ :blog:286:amd_80286_datasheet_june_1989_.pdf|AMD 80286 datasheet}})... that would mean the processor is only at 5MHz. Unless I misunderstand the datasheet, something is drastically wrong here. |
| ===== Configuration ===== | ===== Configuration ===== |
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