Subject: Re: [stella] My demo... From: "Eckhard Stolberg" <Eckhard_Stolberg@xxxxxx> Date: Mon, 28 May 2001 14:43:42 +0200 |
> > The missile works in z26 1.35, doesn't work in z26 1.45... I'm reading the > > fire button on INPT4, is this right? INPT5 is for joystick #2? > > INPT4 is correct, but you should check only for bit 7 (just change bne to bmi). The other bits are used for something different (which i can't rembember now), and are not always zero. > Actually these bits aren't used for anything. The programming manual lists them as 'undefined'. I think on the 2600 they just keep the data that was on the bus last. The Stella emulator always sets these bits to '1', PCAE always sets them to '0', and z26 sets them to the lower bits of the address of the register that currently gets accessed, as this most of the time seems to be what was on the bus last. At least it fixed the problems in Video Pinball, which seems to rely on a certain state of these bits. As for the colours, the one you chose for the water is torquise, which is somewhere in the middle between green and blue. Chosing the 'real' colours for the emulator is quite difficult, since the colours can be tuned in the VCS, on the TV, and on the PC monitor. So what you see on your TV and on your monitor is pretty much different for everyone else. I think Brad just chose the colours to be what they should be ideally by the desription in the programmers manual. Both Johns seem to have tried to match the colours on their TVs with the colours on their monitors running their emulators. Which of the three emulators fits the colours on your TV best is something that you have to find out on your own. Ciao, Eckhard Stolberg - Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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