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- From: foegelle@ccwf.cc.utexas.edu (Michael Foegelle)
- Newsgroups: comp.sys.apple2
- Subject: Re: AE RGB card question
- Message-ID: <78494@ut-emx.uucp>
- Date: 27 Aug 92 14:48:33 GMT
- References: <s7e3PB21w165w@bluemoon.rn.com>
- Sender: news@ut-emx.uucp
- Organization: The University of Texas at Austin, Austin TX
- Lines: 62
-
- In article <s7e3PB21w165w@bluemoon.rn.com> djredick@bluemoon.rn.com (Darrin J. Redick) writes:
- >Ok, here's my current setup:
- >
- >Apple IIe (enhanced)
- >8mhz Zip Chip
- >No Slot Clock
- >AE Ramworks II w/3megs and RGB card/monitor
- >Apple DMP Printer
- >1 20meg Sider and 2 85meg Seagates
- >
- >Question: Why does the RGB continually display Double Hi-Res graphics
- >in BLACK AND WHITE? It's a bit annoying, and I'd like to find out why.
- >
- <snicker> Yeah, I've had the AE RGB card for several years and have
- been more than a little annoyed at AE's design on the blasted thing.
-
- Basically, if you pick up your manual, in the back you'll see a section
- for programmers... To turn on the double-hires part of the RGB card
- completely takes a fancy six operand softswitch sequence rather than
- just turning on the softswitches once as most programs do. There are
- two options; the first of which is to make a short ML routine that you
- call each time before running a DHGR program which just does the turn on
- sequence. This doesn't always work on some programs, and any text screen
- shown in 40 columns will show up in the color 40 mode (where the colors
- are determined by whatever's in the Aux-page part of the last 80 column
- screen) and usually isn't visible.
-
- The other option is of course to go in and hack the program itself and find
- some place where you can add those extra needed lines. A very few software
- programmers have taken into account the AE RGB and done the code to handle
- it; I put it in my Columns //e, which I'm going to put on the binaries
- section and probably on Tybalt, and you'll see it starts up in color like
- it should.
-
- I don't have the code in front of me, so this is just a guess, but I think
- the sequence is something like:
-
- LDA $C054
- STA $C05F
- STA $C05E
- STA $C05F
- STA $C05E
- STA $C05F
-
- but don't take my word for it, it should be in the back of the AE manual.
- And if you're hacking a program, the thing to look for is something like
- just the first two commands of the sequence (where it just says "turn DHGR
- on" instead of AE's on-off-on-off-on sequence to wake it up..)
-
- Hope that answers your question (and helps you solve the problem).
-
- Michael Foegelle
-
-
-
- --
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