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Search: Posts Made By: robinsonb5
Forum: Coders. General 19 December 2019, 01:02
Replies: 17
Views: 873
Posted By robinsonb5
Wow - that's a classy move - massive respect!

Wow - that's a classy move - massive respect!
Forum: Nostalgia & memories 19 December 2019, 00:21
Replies: 12
Views: 825
Posted By robinsonb5
I remember enjoying the diary entries in Wings...

I remember enjoying the diary entries in Wings back in the day.
Forum: Coders. Asm / Hardware 14 December 2019, 17:55
Replies: 6
Views: 388
Posted By robinsonb5
True enough - but being able to derive the same...

True enough - but being able to derive the same result in multiple ways is good for understanding!


(It may be designed for plotting lines on a 2D grid, but in that context one of the two...
Forum: Coders. Asm / Hardware 14 December 2019, 16:48
Replies: 6
Views: 388
Posted By robinsonb5
This could also be done with a version of...

This could also be done with a version of Bresenham's line-drawing algorithm.
Imagine U1=0, U2=20, Y1=0, Y2=32, so a non-integral ratio.

dU=20, dY=32
V=0, c=0, where V is the output line for...
Forum: Coders. General 05 December 2019, 18:20
Replies: 574
Views: 47,123
Posted By robinsonb5
Excellent - keep it up, and show us the progress...

Excellent - keep it up, and show us the progress as it happens - how long it takes doesn't matter. Just have fun with the project - it's guaranteed that you'll learn loads in the process, whatever...
Forum: Coders. General 05 December 2019, 16:10
Replies: 574
Views: 47,123
Posted By robinsonb5
Yes, but only if you *do* it, instead of just...

Yes, but only if you *do* it, instead of just talking about it. ;)
Forum: Retrogaming General Discussion 05 December 2019, 09:57
Replies: 269
Views: 57,387
Posted By robinsonb5
It's awesome to see more progress on this project...

It's awesome to see more progress on this project - but the download link seems to be broken? (Did the forum software remove whatever should have been between "www." and ".com"?)
Forum: Retrogaming General Discussion 11 November 2019, 15:57
Replies: 50
Views: 3,506
Posted By robinsonb5
Yes, but that increase is acheived by shovelling...

Yes, but that increase is acheived by shovelling in more cores rather than improving the throughput of a single core.

Even if improving single-core performance were easily achievable, there's not...
Forum: support.Hardware 05 November 2019, 20:33
Replies: 5
Views: 219
Posted By robinsonb5
Are you sure you're not just measuring the...

Are you sure you're not just measuring the resistance across a shiny new (and presumably fully-discharged) capacitor that your multimeter is desperately trying to charge?
Forum: Member Introductions 05 November 2019, 17:09
Replies: 15
Views: 864
Posted By robinsonb5
Likewise, I've seen the name many times and...

Likewise, I've seen the name many times and hadn't realised you'd been away for so long! Welcome back!
Forum: Nostalgia & memories 01 November 2019, 14:29
Replies: 35
Views: 2,292
Posted By robinsonb5
Yes, at that point art, concept and design become...

Yes, at that point art, concept and design become much more important than technology. The very best Amiga demos have all of those as well as pushing the target hardware to its limit.

On the PC...
Forum: support.Hardware 31 October 2019, 13:44
Replies: 57
Views: 14,202
Posted By robinsonb5
There's definitely a problem using them with a...

There's definitely a problem using them with a C64, but they shouldn't pose any risk to an Amiga.
Forum: support.Other 29 October 2019, 21:34
Replies: 10
Views: 741
Posted By robinsonb5
The click is caused by software stepping the...

The click is caused by software stepping the drive head, which causes the drive to update the diskchange signal. No-click software works by asking the drive to step the head beyond its normal range....
Forum: Coders. C/C++ 28 October 2019, 14:15
Replies: 7
Views: 670
Posted By robinsonb5
I'm not 100% sure this will work, but you would...

I'm not 100% sure this will work, but you would need to modify the backend to mark registers r4 - r31 as allocated in the init_cg function (regsa[n]=1; careful, the register number doesn't map...
Forum: Amiga scene 27 October 2019, 11:15
Replies: 21
Views: 2,474
Posted By robinsonb5
Just to be clear, because it might not be obvious...

Just to be clear, because it might not be obvious from reading his post in isolation rather than in the context of the whole thread:
jbenam wasn't requesting that someone share P96 on Mega or a...
Forum: Amiga scene 09 October 2019, 14:31
Replies: 286
Views: 32,063
Posted By robinsonb5
If you did want to pursue this at some point in...

If you did want to pursue this at some point in the future, there's a quirk in the non-AGA Amiga chipset where if you set the number of bitplanes to 7, DMA fetches only four planes but Denise behaves...
Forum: Coders. C/C++ 03 October 2019, 14:12
Replies: 9
Views: 843
Posted By robinsonb5
I thought that was mandatory when compiling GCC?

I thought that was mandatory when compiling GCC?
Forum: Retrogaming General Discussion 26 September 2019, 23:37
Replies: 100
Views: 4,482
Posted By robinsonb5
That could actually be a really cool project!

That could actually be a really cool project!
Forum: Amiga scene 20 September 2019, 21:10
Replies: 407
Views: 37,729
Posted By robinsonb5
I'm not usually a fan of that kind of case - but...

I'm not usually a fan of that kind of case - but that one I really like!
Forum: Nostalgia & memories 20 September 2019, 17:04
Replies: 89
Views: 8,199
Posted By robinsonb5
Was it XJ200 that would toggle the audio filter...

Was it XJ200 that would toggle the audio filter to change the engine sound when you went through a tunnel? I remember that was pretty cool!
Forum: support.Hardware 04 September 2019, 12:20
Replies: 7
Views: 558
Posted By robinsonb5
I use it occasionally as a bodge on guitar nut...

I use it occasionally as a bodge on guitar nut slots, until I have to cut a new nut from scratch - and it works very well in that context. As you might expect the material it creates is gritty and...
Forum: support.Hardware 30 August 2019, 16:48
Replies: 10
Views: 358
Posted By robinsonb5
Power supply, maybe?

Power supply, maybe?
Forum: Retrogaming General Discussion 17 August 2019, 13:15
Replies: 25
Views: 1,453
Posted By robinsonb5
They lost because the product in question didn't...

They lost because the product in question didn't contain a copy of Sony's BIOS - the alleged copies were made during the development and reverse engineering stage which was deemed to be fair use.
...
Forum: Retrogaming General Discussion 17 August 2019, 00:24
Replies: 25
Views: 1,453
Posted By robinsonb5
Just because it's possible to download a file...

Just because it's possible to download a file from a website doesn't mean it's fair game for any use. By default copyright law doesn't give you the right to download and use it at all - whatever...
Forum: support.Hardware 15 August 2019, 14:45
Replies: 17
Views: 934
Posted By robinsonb5
Seconded - the dual-purpose nature of those pins...

Seconded - the dual-purpose nature of those pins can make them squirrelly. You're more likely to have trouble with pull-down than pull-up, though. You really do need to get that voltage right down...
Forum: support.Hardware 23 July 2019, 15:02
Replies: 12
Views: 450
Posted By robinsonb5
Maybe pin 7 (+5v) is the one making poor...

Maybe pin 7 (+5v) is the one making poor connection?
Forum: Retrogaming General Discussion 02 July 2019, 13:16
Replies: 8
Views: 620
Posted By robinsonb5
I wonder why it didn't sell?

I wonder why it didn't sell?
Forum: support.Hardware 12 June 2019, 02:39
Replies: 8
Views: 623
Posted By robinsonb5
The brightness bars are normal, both for real...

The brightness bars are normal, both for real Amigas and FPGA replicas. The ripple distortion isn't normal, and real Amigas won't do that. The cause is probably just that the core's clocks are...
Forum: Coders. C/C++ 08 June 2019, 19:01
Replies: 34
Views: 3,201
Posted By robinsonb5
One advantage I can see about learning by writing...

One advantage I can see about learning by writing code for a platform like the Amiga is that you will get a feel for which methods are fast and which are slow and wasteful.
If you're running your...
Forum: support.Hardware 05 June 2019, 15:35
Replies: 9
Views: 451
Posted By robinsonb5
The horrible sound is is usually caused by a...

The horrible sound is is usually caused by a build-up of mould on the disk's surface which increases the drag on the floppy drive heads. The mould tends to transfer onto the heads, preventing the...
Forum: Hardware mods 04 June 2019, 01:13
Replies: 38
Views: 4,644
Posted By robinsonb5
But why 16 strips? I count 38 through holes on...

But why 16 strips? I count 38 through holes on the picture in your first post - surely 4 strips would be sufficient? Or am I missing something obvious?
Forum: support.Hardware 03 June 2019, 00:19
Replies: 38
Views: 916
Posted By robinsonb5
Given that merely accessing areas where the RAM...

Given that merely accessing areas where the RAM should be is causing a lockup, I'm thinking the bus cycles aren't being terminated properly - would you agree?
Forum: support.Hardware 02 June 2019, 19:46
Replies: 38
Views: 916
Posted By robinsonb5
I've had a very quick look at the Alloc40...

I've had a very quick look at the Alloc40 command, and I believe it maps memory in the $01000000 to $03000000 range. (It could be $02000000 to $04000000 - I haven't looked in enough detail to be...
Forum: support.Hardware 01 June 2019, 02:08
Replies: 38
Views: 916
Posted By robinsonb5
My apologies, I assumed you were familiar with...

My apologies, I assumed you were familiar with the shell, since you successfully zipped and posted the contents of an Amiga-formatted compact flash card (not a trivial operation!)



Which...
Forum: support.Hardware 01 June 2019, 01:40
Replies: 38
Views: 916
Posted By robinsonb5
OK, the C directory contains a program called...

OK, the C directory contains a program called Alloc40 which is responsible for adding the RAM to the system. That program is run from user-startup and I suspect that's the point at which the system's...
Forum: Coders. AMOS 24 May 2019, 01:34
Replies: 17
Views: 1,800
Posted By robinsonb5
I had an idea a year or so back, when one of...

I had an idea a year or so back, when one of these discussions sprang up, about making a raycaster that plotted horizonal rather than vertical spans. The idea was to make something a bit like a...
Forum: Retrogaming General Discussion 17 May 2019, 18:16
Replies: 69
Views: 4,044
Posted By robinsonb5
For me the other interests are coding,...

For me the other interests are coding, electronics, photography, music (specifically acoustic guitar - I currently have eight, five of which are permanently in non-standard tunings) and just recently...
Forum: Coders. Contest 16 May 2019, 13:31
Replies: 32
Views: 4,387
Posted By robinsonb5
Well for what it's worth, I'm happy to donate...

Well for what it's worth, I'm happy to donate again.
Forum: project.EAB 13 May 2019, 03:01
Replies: 55
Views: 6,589
Posted By robinsonb5
Thanks for all your efforts - they are...

Thanks for all your efforts - they are appreciated. It's one of those jobs where you don't generally get the thanks you deserve because the real effort's behind-the-scenes and (when it goes right!)...
Forum: support.Hardware 04 May 2019, 02:17
Replies: 95
Views: 8,108
Posted By robinsonb5
Power supply problem, maybe? Are the custom...

Power supply problem, maybe? Are the custom chips still getting unreasonably hot?
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