25 Aug
2010
25 Aug
'10
12:37 a.m.
On 8/24/10 6:33 PM, Chuck Guzis wrote:
I have a vague memory of doing a hack to an IBM PC CGA card that
enabled interlacing for a huge improvement in the readability of
character-based output. It involved running a wire, and *I think*
replacing the 6845 with a 46505. Does anyone else know about this?
-Dave
--
Dave McGuire
Port Charlotte, FL
some of you
will perhaps remember me being stuck with a problem
regarding a Fujitsu FANUC "mate TG" CNC controller (rebadged as
"Siemens Sinumerik"), of which I have the main unit but not the
monitor. Thanks to a very nice guy living nearby, I was provided with
some new information about the interface, which is rather uncommon in
itself. I had already guessed that there is a significant amount of
smarts in the monitor; the newly acquired documentation confirms this.
The silicon brain (CRT controller) of the thing is called LSI HD46505.
I beleive the HD46505 is basically a clone of the Motorola 6845 CRTC,
so there's not a lot of information there.