“Do nemo it’s Christmas time at all?”

In a plaintive attempt to make up for a lack of releases this year, I’m going to try to release something every day through to Christmas.

It’s only the 1st, so you get a Beta: SaveToPath makes path variables work the way you’d expect them to work – you can save to them too – and also implements the ...$Write functionality that was previously only present in RO4.3 and RO6.

Open my little glittery door #1 here

Lord Nemo, Master of both the light and the darkness, send your Coding Spirit upon our preparations for Nemomas.

Day#2: PreciseMouse which allows sub-pixel accuracy when moving your mouse (except in RPCEmu, can’t help you there)

Day#3: OSWrites

It’s not every day you get four new official Kernel SWIs.

Day#3: OSWrites

It’s all redacted on NetSurf. ;)

As an unconnected observation, the link here on this forum is to HTTPS, but the one on the sites.google.com/view/nemo20000/ page is currently to HTTP – modern browsers don’t like HTTP links from an HTTPS page, some don’t like mixed page content to the extent that the HTTP loaded portions don’t (load that is) so Firefox niggled a bit.

Reasons why Netsurf might not be rendering quite what was intended, select from this as appropriate.

Where do you get allocations from? I’m temporarily using 0×300-0×33f.

Allocations are from ROOL at e-mail allocate at riscosopen dot org using the App !Allocate that lives in Utilities.

Day#4: HandleName

List open files! Use file handles as filenames! eg “#253”. That’s all!

link

Homepage typo fixed, ta.

I’m temporarily using 0×300-0×33f.

000-0FF are for private use. 100-3FF are allocated PD types. 400-DFF are allocated commercial types. And E00-FFF are allocated system types.

well would you look at that you have made me create a directory called Nemo on my main machine, now i can only hope we will see an updated !Vantage to put in it.

File types are not chunk numbers, are they?

File types are not chunk numbers, are they?

No, but I think in the beginning Acorn tried to break the allocations into categories.

400-DFF are allocated commercial types.

I was allocated &17F way back when (my notes say 25th February 1999, so post Acorn but only just – I think it was something to do with pineapples).

Might be a typo here:

OS_Write16 (&AC)

OS_Write16 (&AD)

https://sites.google.com/view/nemo20000/vdu?authuser=0

Filetype ranges are a bit <waves hands around> – once you have an allocation there’s little point complaining it starts with the wrong digit. I’ve certainly found very little correlation over the years between that grouping and the filetype’s purpose or software’s commercial status.

The key point is that while writing something and for personal stuff you should use &0xx for your filetypes, but DO NOT release anything using those numbers.

typo

“If you’re going to be wrong, at least be definitely wrong”. Ta, fixed.

Day #5: !Bowdler

RISC OS SysVars are not human-readable, despite what your eyes tell you. Dive into the unpleasant details and out the other side with an encoding solution Thomas Bowdler would ******* love.

Thank you for this, I have a huge amount of respect for the work that you do.

No, but I think in the beginning Acorn tried to break the allocations into categories.

I’d say booting/multiprocessing/multitasking qualifies as kernel category.

Day #6: WhatTheFile

If you’ve ever had an error like 'IWonderWhere:ThisIs' is a directory then you’re going to be delighted with what Santa’s stuffed in your sock.

Thank’s Patrick, I shall return to that post next time I inevitably think “Why do I bother?”.

Day #7: AutoPrefix

Basic programs ought to be able to access the files alongside them in a directory simply by using their leafname. Other interpreted languages too. AutoPrefix works with the DDEUtils module to automatically *Prefix for any filetypes you want.

Monsieur, with these RISCy treats you are really spoiling us

Big one coming tomorrow. Ought to have its own page really, if only to deal with the expected “Yes but what’s it for?” questions.

“Yes but what’s it for?”

Tomorrow ensures that today and the day after tomorrow don’t collide in the middle of the night.

Many, many thanks for all these, nemo. Your knowledge of RISC OS could surely fill a bible, and I for one really appreciate your efforts to release your psalms to the flock.

This is the best advent calendar I’ve had since someone upset my mum by disclosing the revelation to me that there could be chocolates behind the doors…

Day #8: GUID

This is a big-ole module and deserves a whole heap of explanation and demonstration but I’m just too tired after dealing with a large fence that dreamt it was a Wright brother.

On the eight day of Christmas (I know it’s not) your true love (again…) brings to you:

• 8KB of module
• 7 demo programs
• 6 sort comparators
• 5 OS_FILE REASONS
• 4 letter acronyms
• 3 star commands
• 2 byte orders
• and a SpriteOp inadvertently

(one of those is an off-by-one for poetic reasons)

We’ll no doubt come back to this in the new year, it’s a really interesting subject.