80286 ATX mainboard based on the IBM 5170 AT PC

Re:80286 ATX mainboard based on the IBM 5170 AT PC by NikkiA on Wednesday November 13, 2024 @09:05AM (#42126199)

I'm not so keen on putting the RAM on the ISA bus like that; assuming that the ISA bus is standard and thus 8MHz, it's going to slow the system down unnecessarily.

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Re:80286 ATX mainboard based on the IBM 5170 AT PC by rasz on Wednesday November 13, 2024 @11:26AM (#42127441)

ISA seems to run at 16MHz here, synchronous with CPU.

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Re:80286 ATX mainboard based on the IBM 5170 AT PC by guenthert on Thursday November 14, 2024 @03:56AM (#42134314)

That's not going bring much joy. There are ISA cards which expect not (much) more than a 8MHz clock. e.g. the (at one time popular) Adaptek 1542B SCSI HBA will not work reliably with 10MHz.

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