A matrix of holes does not always indicate a prototype card.
IBM sometimes put them on production cards if there was spare real estate.
An example is the IBM Game Control Adapter, pictured [here].
A matrix of holes does not always indicate a prototype card.
IBM sometimes put them on production cards if there was spare real estate.
An example is the IBM Game Control Adapter, pictured [here].
Is it right? Because could not find the iSA interface of the XGA images on the Internet.
Can only find Radius MultiView XGA in http://www.os2museum.com/wp/?p=1867
And said:
XGA Clones
For the XGA, IBM chose a novel strategy: Instead of making the hardware specifications secret, the register interface was fully documented; in addition, IBM licensed the XGA chip design to SGS-Thomson (inmos) and Intel. Worth of note is that Radius manufactured ISA-based XGA-2 adapters built around chips from inmos (as usual, IBM didn’t bother with non-MCA adapters).