09 June 2024, 21:41 | #1 |
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Lotus 2 - accelerate cancelled when turning if using keyboard (real A1200)
My eldest lad and I spent a bit of time on Lotus 2 over the weekend on my real A1200. I couldn't be ar5ed to find my 2nd joystick so I opted for keyboard controls but I have noticed that the accelerator input from the spacebar is cancelled when steering left or right, like it can only read 1 input at a time and the steering trumps the accelerator.
I'm using version 1.9 which I see isn't the latest version but the release history doesn't mention anything about this issue being noticed/fixed in newer versions. Has anyone else noticed this? |
09 June 2024, 22:05 | #2 |
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It can be a A1200 hardware issue. I remember Z-Out J+K cheat keys wouldn't work as on a A1200 you can't press both keys. But I can't say for sure if that's the case for this particular set of controls.
Time to fire the game to find out. |
09 June 2024, 22:48 | #3 |
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I have noticed this behaviour only when playing player 2 with an USB wireless keyboard with my A600 and an internal USB adapter (i had so many keyboard membranes falling in that one that i installed permanently a way to use an external keyboard and avoid touching the real one).Seems like a hardware limitation of the adapter to be only able to press one key at a time.
As for the regular Amiga keyboard, it works normally with several keys. There may be a hardware fault on your computer. |
09 June 2024, 23:26 | #4 |
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It depends on exactly which keys and which model of Amiga. Real Amiga keyboards are certainly not immune from ghosting issues; IIRC it is discussed at some length in the HRM, although since that predates the A1200 it won't help much with A1200-only issues.
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09 June 2024, 23:29 | #5 |
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Can't tell but i am answering about that particular game Lotus 2. It sure works fine with the Amiga keyboard. I had to switch from my external wireless keyboard to the real one to catch my daughter racing with the joypad because of this acceleration issue.
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10 June 2024, 09:05 | #6 |
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Yep, F1GP had the same issues for me. Typical C= skimping on the keyboard controller electronics!
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10 June 2024, 10:16 | #7 |
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I've had similar problems on my A1200's. Both the wedge and towered A1200 I have often have issues with keyboard controls. I'm not sure if Lotus II allows for remapping of keys, but I did have more luck using the arrow keys on the wedge A1200. Many other combinations didn't work, with the computer(s) only recognising 1 keypress at a time (well, plus some keys like shift & crtl).
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10 June 2024, 11:59 | #8 |
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Thanks for the feedback, everyone.
I loaded up a program that lets me test the keyboard inputs and I noticed that holding down the Space Bar is cancelled out if I push any of the letter keys on the lowest row of keys but not so for the other keys. Frustratingly the Z and X keys for steering are on the lowest row so I guess it's joysticks only for 2 player on Lotus 2. |
10 June 2024, 14:54 | #9 |
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that can be fixed in whdload
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10 June 2024, 17:20 | #10 |
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10 June 2024, 19:20 | #11 |
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no. You have to locate the keyboard routine and replace keypresses by some other keypresses. Easy but not exactly trivial, as just rebuilding a slave from source requires some asm knowledge & properly installed tools.
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11 June 2024, 08:51 | #12 |
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Bugger. Thanks for the info.
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11 June 2024, 10:01 | #13 |
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I've already adapted & rebuilt the slave for vasm
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11 June 2024, 15:21 | #14 |
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Please excuse my ignorance but does that mean you’ll release an updated slave that will fix this issue? I’m genuinely asking, I’m not trying to pressure you into doing it.
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11 June 2024, 17:24 | #15 |
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yes, I'll update the slave.
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11 June 2024, 18:47 | #16 |
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This is a common issue on PC's too, it's known as n-key rollover. Do the modern replacement mechanical keyboards by kipper etc fix it or is it a controller limitation?
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11 June 2024, 21:25 | #17 |
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there are 5 supported versions, so it could take more time than expected
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11 June 2024, 22:39 | #18 |
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Thank you so much for taking it on, JOTD. That's really very kind of you.
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12 June 2024, 10:44 | #19 |
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Perhaps it will work too with my wireless keyboard then?
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12 June 2024, 11:02 | #20 | |
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Quote:
I don't think it was solved when I went with a PC keyboard connected to a EZ keyboard converter (?). |
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