Search found 138 matches

by Daren
Wed Dec 07, 2022 12:47 am
Forum: Snippets
Topic: Tally counter
Replies: 0
Views: 10

Tally counter

I wanted to use arrow up and down keys to increment/decrement a variable for a program I am working on, so as a test I created a small utility which does this and prints the variable value to the screen, it worked fine and whilst using it I thought it would come in rather handy as a program in its o...
by Daren
Sun Dec 04, 2022 5:07 pm
Forum: Software
Topic: Help with formula
Replies: 5
Views: 1395

Re: Help with formula

@Roger I like this idea, and funnily enough I thought of this idea a while back except without the push button, I was thinking of adding a rechargeable battery inside the top slot case, which powers the Psion, and some means of seeing the PP3 voltage, then if the voltage was getting low the device w...
by Daren
Sat Dec 03, 2022 5:56 pm
Forum: Hardware
Topic: Top slot hardware idea
Replies: 29
Views: 970

Re: Top slot hardware idea

:lol: Yes that is hilarious, love the Two Ronnies. Apple stuff is best avoided nowadays. IPad has got worse with each update (for me) from a usability perspective, too many (poorly implemented) touch gestures which often do unwanted actions like split the screen when you just wanted to scroll across...
by Daren
Fri Dec 02, 2022 3:15 am
Forum: Hardware
Topic: Top slot hardware idea
Replies: 29
Views: 970

Re: Top slot hardware idea

@xchris thanks for the link.

@MartinReid yours are great, I couldn’t do as good a job as you did, to clarify it is the iPad which is a pain because the zooming and scrolling ;)
by Daren
Wed Nov 30, 2022 2:16 pm
Forum: Hardware
Topic: Top slot hardware idea
Replies: 29
Views: 970

Re: Top slot hardware idea

@MarinReid - your documents are great but any chance to have them single page per page instead of 2 pages per page? I only ask as viewing on my iPad in portrait mode involves lots of zooming and scrolling. I understand why they are in this format and if it is a big job to do this then don’t worry ab...
by Daren
Fri Nov 25, 2022 6:29 pm
Forum: General
Topic: Beep formula in manual incorrect??? (Solved)
Replies: 9
Views: 165

Re: Beep formula in manual incorrect??? (Solved)

@MartinP I think I read in the technical manual that beep is derived from the alarm signal which is formed from a divider. Makes sense what you said about the number coming from CPU, though I did not twig before. In my tests using the formula it seems quite accurate, the next challenge is to figure ...
by Daren
Fri Nov 25, 2022 1:05 am
Forum: General
Topic: Beep formula in manual incorrect??? (Solved)
Replies: 9
Views: 165

Re: Beep formula in manual incorrect??? (Solved)

@MartinP very elegant, maths/algebra is not my strong point so I have no idea how that works but it does. Yes @MartinReid it is strange, I also noticed from some of the promo leaflets that the specifications of the audio frequency changed - the 1986 brochure has it listed as 11hz-10khz, this is the ...
by Daren
Thu Nov 24, 2022 5:44 pm
Forum: General
Topic: Beep formula in manual incorrect??? (Solved)
Replies: 9
Views: 165

Re: Beep formula in manual is incorrect???

Thanks @jarrydn I think the Dabhand book led me to believe the manual formula was incorrect but actually it is correct, just works the opposite way I expected :oops: :lol: @xchris - spot on! The Dabhand book is still wrong though as it has the wrong note frequencies, the Shaw book is correct aside f...
by Daren
Thu Nov 24, 2022 3:04 am
Forum: General
Topic: Beep formula in manual incorrect??? (Solved)
Replies: 9
Views: 165

Beep formula in manual incorrect??? (Solved)

In the manual it states that Frequency=921600/(78+2*y%)Hz) gives the frequency, but this doesn’t give a correct Hz output here, I have checked a few values, for example if you put y% as 440 the result is given as 962 (rounded to int) but if you enter this into the beep parameter then it is not retur...
by Daren
Wed Nov 23, 2022 8:34 pm
Forum: Programming
Topic: OPL programming noob questions
Replies: 10
Views: 462

Re: OPL programming noob questions

Thanks for the answer @toml12953 It is structure and program flow aspects which I can’t seem to find a lot of info/examples to do a lot of what I want, without using GOTO, for example multiple choice GET/KEY/INPUT branches, which functions were you alluding to that can approximate GOSUB functionality?