21 February 2010, 05:22 | #1 |
Moderator
Join Date: Nov 2004
Location: Eksjö / Sweden
Posts: 5,602
|
KeyRah test!
I'd like to keep this separate from my Keyrah 'question' thread, since I did some testing and read some muttering about Keyrah performance in Pinball Fantasies.
Software used: Asm-One, Gravity-Force, Pinball Dreams (all in the line of duty of course!! Hehe.) Setup: Core2Duo+ATi 4800 Series, latest WinUAE (with gfx_backbuffers=0 and 50Hz on a CRT), two USB keyboards. At first when I compared the keyboards, I wasn't quite sure which was the best. In Gravity-Force you can instantly tell any delay - for the sound card, by boosting to land on a platform and checking the bounce sounds vs. the visual bounce of the spaceship, and for the keyboard delay, the delay between pressing Enter and the shot ejecting from it. I found the sound delay negligible, but the fire delay less so. And I have an integrated sound card. You can set it to buffer size 1 without side effect, but even so, that means the keyboard delay was 'bad for both'. I couldn't tell them apart, except in AsmOne where I could type faster by nature (less typos), my fingers having been honed by an Amiga keyboard since time immemorial. Or something Now, I have a freaky but sane setup, ie. 'some cheap USB hub' with a single USB lead going into a walk-in closet that serves as computer room. And when I tested the hub with my good optical mouse and mouserate.exe, the report rates varied from 83 to 1037 Hz. Not good. So I tested both USB keyboards in my 'dedicated 5 meter USB lead' which goes to a USB port overclocked to a stable 500Hz (normally intended for a mouse since I used to play online FPS), and the difference was obvious. Both keyboards performed MUCH better. Conclusion: any USB keyboard sucks in a hub (whether it's my cheap König one or one built into some device like a screen), and Keyrah is no worse than any USB keyboard. I did find that Keyrah had a tendency to 'repeat' a key pressed on one of my PCs; but since it was hotplugged back and forth in an emu I'm not sure it's Keyrah's fault. Could be, I guess. I don't really understand why Jens went from a simple serial to parallel converter and a (translation) ROM to PS/2 instead of USB, but I guess it's a part of his master plan and to do with auto-configuration which is not possible on PS/2. But ofc for gaming performance, there is no subtitute for a ZERO millisecond "instant" PS/2 keyboard, even if USB lag is lowered to 1/500 second. This is *not* a 'laying down the law' test at all; I've no way of testing the actual actuator->visual feedback delay. It's just a 'how it feels' quick user test. I would like input from the #Longplays guys, especially those who favor or disfavor the Keyrah as game input devices, as [tight/frustrating] games usually test the input->feedback loop the best. I did set a highscore in 'Steel Wheel' with one of the keyboards - an A1200 keyboard via Keyrah. But I don't know if that counts, it was a measly 19M or so from 'some ADF'. Since I want the absolute best for WinUAE on the occasion I use it instead of a real Amiga, I would also like to hear from those interested in making a PS/2 converter for A500 'spring' type keyboards (either from the ribbon cable point or controller pins point), and only because I hold a personal opinion these were the best made for the Amigas. (ps. For anyone using an LCD monitor, I would instantly recommend the Keyrah! Since a 2-8ms delay over the delay built into your display will hardly be noticable.) |
21 February 2010, 15:33 | #2 |
Amiga NetRunner
Join Date: Apr 2005
Location: Spain
Age: 45
Posts: 941
|
I don't know, but wasn't the keyrah advertised as performing like a normal usb keyboard?. I was planning on getting one, but if you say it has a delay, then it's no good for a keyboard.
|
21 February 2010, 19:58 | #3 |
Moderator
Join Date: Nov 2004
Location: Eksjö / Sweden
Posts: 5,602
|
The (long) post says that all USB keyboards have a delay compared to PS/2 keyboards, that I could not tell any difference between the Keyrah and my previous USB keyboard, and that I would be interested in making a PS/2 keyboard adapter for A500 keyboard --> PC.
Last edited by Photon; 21 February 2010 at 21:32. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
New Keyrah V2 | amigakit.com | MarketPlace | 4 | 18 May 2013 02:42 |
KeyRah | Photon | support.Hardware | 8 | 17 February 2010 02:56 |
CD32 Frog Feast test available. Test out the final! | cdoty | News | 42 | 01 April 2008 16:20 |
Keyrah Question | Charlie | support.Hardware | 4 | 25 November 2007 13:52 |
prob with keyrah | Raislin77it | support.Hardware | 0 | 22 August 2007 20:58 |
|
|