JDR Microdevices sold an 8-bit IDE card, this one has a limit of 528MB drives
Could that limit not be broken by Dynamic Drive Overlay (DDO) software such as EZBIOS, as you would do on later AT+ machines?
It depends. A lot of "hard cards" used 3.5" MFM/RLL drives with a bog-standard controller.
The only period-appropriate 8-bit IDE adapter I own is a Silicon Valley ADP50. The rest are XT-IDE variants of various flavors.
JDR Microdevices sold an 8-bit IDE card, this one has a limit of 528MB drives
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