Den Sun, 15 Jul 2018 04:44:17 +0000 (UTC) skrev Steve Gray <sjgray@rogers.com>: > Sometimes the obvious stares you in the face. So, if I just reverse > the upper 128 extended characters they will just get reversed again > and come out normal. No need to mod the motherboard.... unless... Now > I have to fix the extra phantom 9th pixel that gets turned on > whenever RVS characters are shown.... I fixed my B128 by cutting a > pin and I assume it will also work on the high-profile machines. > (Anyone try this?) BTW, my machine's video RAM chip is soldered in, > so I'll have to socket it if I'm gonna work on the Colour expansion > too. As eprom is so cheap today, wouldn't it be a good idea to add a 9th bit as a compensation for that line which is solid black/bright with the standard circuit? Btw for the 8088 card at least inverted video is needed and two intensities would be really good. Haven't had a look at the monitors schematics but adding two different brightness levels as in MDA would probably not be that hard. This assumes that all HP B's uses the same monitor though. For the LP machines it's of course simpler. -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies.Received on 2018-07-15 22:01:07
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