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- From: gregp@gpsoft.adsp.sub.org (Dr Greg Perry)
- Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.multimedia
- Subject: Re: Touch screen input?
- Message-ID: <gregp.04bm@gpsoft.adsp.sub.org>
- Date: 1 Jan 93 06:39:55 GMT
- References: <epang.725705005@sfu.ca> <ping.03qv@ping.actrix.gen.nz>
- Organization: GP Software, Australia
- Lines: 78
- X-NewsSoftware: GRn 1.16e (7/4/92) by Mike Schwartz & Michael B. Smith
-
- In article <ping.03qv@ping.actrix.gen.nz> ping@ping.actrix.gen.nz (Peter Ingham) writes:
- > Eugene Pang (epang@fraser.sfu.ca) wrote:
- >
- > > Playing around with a MicroTouch touch screen (without driver/documentation)
- > > I don't see how the MicroTouch can support finger dragging--it only outputs
- > > the initial coordinates of a touch (checked this with VLT), and doesn't
- > > output new coordinates unless you withdraw your finger momentarily. Which
- > > IMHO makes it kinda useless as a mouse replacement, unless... Does anyone
- > > know if (and how) it can be made to output a continuous stream of data?
-
- This is actually incorrect. The Microtouch hardware (latest ASIC versions)
- supports a wide selection of operational modes. Some of these include
-
- point mode: single event on touch down
- down/up mode: event on touch and event on lift off
- stream mode: continuous events - touch down, then stream while
- finger is in contact, then touch up when finger lift
- off.
- polled mode: hardware buffers last event until requested then
- sends values to computer.
-
- Plus some other modes such as Tablet etc. All output from the hardware
- can also be generated in hex or decimal with optional status reporting
- touch down /touch lift off/ continuous touch etc.
-
- All events from the hardware are reported from 1024 x 1024 screen
- matrix.
-
- Unfortunately I cannot provide specific details because of agreements with
- Microtouch but any developer should be able to obtain details from Microtouch
- direct. The manuals which accompany the screen do provide sufficient info
- for most people to get something running. On the other hand, you should be
- able to purchase our GPTouch software direct from MicroTouch agents (or
- direct from us if necessary)
-
- >
- > I use a Microtouch (also without docs) that was bought by another company (who
- > cannot locate the docs for it).
- >
- > The two progs that were with it are GPTouch (the driver) and ??GPPrefs?? (the
- > configurer).
- >
- >
- > If anyone can help with docs, I'd love to hear from you...
- >
- > A problem I have at the moment is the sampling rate. The finger drag runs very
- > slowly with various apps due to the large number of small-increment mouse movements
- > the driver appears to be simulating. I've played with the "sensitivity"
- > control but this not appear to make much difference.
- >
- > Peter S. Ingham ping@ping.actrix.gen.nz
- > Lower Hutt, New Zealand 3:771/220.5
-
-
- Please be aware that we have recently upgraded GPTouch and associated
- Touch_Preferences program to provide full WB2 overscan support and in the
- process of the re-write have changed the method of accepting responses from
- the hardware so that the screen response is now considerably faster.
-
- In the early versions of GPTouch the problem was, in fact, that the screen
- hardware was generating TOO MANY events per second (up to 100!!) so that
- the Amiga's performance was slow for 'drag' operations. We have changed this
- to receive less events per second thus the subjective performance is a lot
- better. We have also added several other operational modes such as single
- point touch for better use with mumtimedia programs where only single events
- are of interest. Other new features include the ability to adjust the
- operating frequency of the screen hardware to minimise noise caused by
- resonance btw the monitor frequency and the touch screen hardware.
-
- Anyone using early versions of GPTouch should contact us about upgrade details.
-
- --
- __
- +-----------------------------------------------------------------------+
- | Dr Greg Perry GPSoftware, 21 Aloomba Rd, ASHGROVE AUSTRALIA 4060 |
- | Phone/Fax +61 7 3661402 |
- | EMAIL:INTERNET cbmaus!cbmozq!gpsoft!gregp@cbmvax.commodore.com |
- | CBMNET: gregp@gpsoft.adsp.sub.org |
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