9 Aug
2011
9 Aug
'11
8:47 a.m.
On 9 Aug 2011 at 8:54, Doug Peksa wrote:
Remember doing exactly that 25 or so years ago. Wrote
some process
control software; CGA monitor on top of the PC and the MDA monitor
hanging from the roof of the factory floor displaying bundling
information. Machine control via the parallel port which required a
tiny bit of assembler but the rest was QBasic.
The NEC PC9801 took an alternate approach--it had two graphics
controllers in the machine, so graphics and text were handled
independently and could be superimposed on the same screen.
--Chuck