MousePort2:FAIL
07-Jan-87 01:35:27
Sb: #47480-MousePort2:FAIL
Fm: Larry Phillips/ICUG 74025,636
To: Ben Blish 72667,1341
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I imagine the method of A-D conversion is the same as it was on the 64,
charge an external cap, and count the time from vertical retrace. When the
charge on the cap reaches a value determined by an internal comparator,
stop the count. Though it isn't pleasant when a VLSI chip goes, it should
be remembered that these chips are part of the reason we have such an
advanced machine.