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IBM Portable PC
Joined: 23 Dec 2007
Posts: 60
Location: Melbourne, Australia
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 Posted:
Sat Jun 01, 2013 1:08 am |
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Obviously it works with the IBM HDC, what about other cards requiring DMA like a Compaticard IV FDC etc?
Strangely, most of the 16 bit ISA (not 8 bit) ISA bus expansion options in later years could not be used with cards requiring DMA!? |
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IBM Portable PC
Joined: 23 Dec 2007
Posts: 60
Location: Melbourne, Australia
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Mon Jun 03, 2013 1:26 am |
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Okay, DMA is not an issue.
Bus Mastering cards would be, however I'm told 8 bit ISA did not support bus mastering, it was part of the AT 16 bit upgrade. |
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