English Amiga Board


Go Back   English Amiga Board > Search Forums

Showing results 1 to 40 of 1316
Search took 0.16 seconds.
Search: Posts Made By: roondar
Forum: support.Apps Yesterday, 15:44
Replies: 5
Views: 191
Posted By roondar
For new projects in Basic for a standard A1200,...

For new projects in Basic for a standard A1200, I'd also suggest using Blitz 2.1. The later versions seem to be aimed more at accelerated machines.
Forum: Coders. General Yesterday, 15:41
Replies: 74
Views: 2,230
Posted By roondar
Do note I corrected them, they're actually quite...

Do note I corrected them, they're actually quite a bit lower still ;)

A question here would be what the performance difference here is between your compiled C code and assembly. I honestly don't...
Forum: Coders. General Yesterday, 15:18
Replies: 74
Views: 2,230
Posted By roondar
Using interrupts to control the Blitter is a very...

Using interrupts to control the Blitter is a very nice and elegant way of doing things. I've experimented with it for quite a while.

However, nice as it is from a programmers viewpoint (no busy...
Forum: OT - General 17 October 2019, 20:13
Replies: 8
Views: 270
Posted By roondar
My Amiga hobby is mostly about two things: I...

My Amiga hobby is mostly about two things: I enjoying the puzzle of making things work on an old and limited architecture. To me, programming is much more pure and rewarding when you can't hide...
Forum: support.Hardware 17 October 2019, 17:33
Replies: 2
Views: 70
Posted By roondar
IDE drives can have a master/slave jumper. I'm...

IDE drives can have a master/slave jumper. I'm not 100% sure, but the A1200 might react like this if that jumper is set incorrectly.

The only other thing I can think of is that the drive is not...
Forum: support.Hardware 17 October 2019, 17:30
Replies: 18
Views: 562
Posted By roondar
Best I not go buying CPU's off e-bay any time...

Best I not go buying CPU's off e-bay any time soon then as I'd have fallen for that hook, line and sinker... So... How do you spot it's a relabeled one?
Forum: Coders. General 17 October 2019, 17:28
Replies: 14
Views: 260
Posted By roondar
Personally I find the link to some parts of the...

Personally I find the link to some parts of the physical hardware the hardest to understand properly. I can get most of the custom chips, but when it's about how to read or write to disk, or why...
Forum: Coders. General 17 October 2019, 17:23
Replies: 74
Views: 2,230
Posted By roondar
It will be interesting to see what timing tells...

It will be interesting to see what timing tells you, yeah.

Cool to see Blitter filling working though, as I recall not many games actually used the Blitter to draw polygons.
Forum: OT - General 17 October 2019, 17:10
Replies: 8
Views: 270
Posted By roondar
Thank you, I am indeed kind of back now. Though...

Thank you, I am indeed kind of back now. Though I'm doing my best not to touch any VS or "disappointed by <insert Amiga model>" thread any time soon. That A1200 thread nearly ended up making me quit...
Forum: Coders. General 17 October 2019, 16:45
Replies: 74
Views: 2,230
Posted By roondar
This is indeed looking nice. Am I right that you...

This is indeed looking nice. Am I right that you did manage to fix the Blitter fill in the end?

If so, I'd be very interested in knowing what the performance difference between CPU and Blitter...
Forum: Coders. General 17 October 2019, 16:39
Replies: 14
Views: 260
Posted By roondar
I don't remember all off the top of my head, but...

I don't remember all off the top of my head, but here's some tips and stuff I've run into when using the CIA's.

The thing that caused me some errors when I first did a CIA timer routine was that...
Forum: Nostalgia & memories 15 October 2019, 10:57
Replies: 82
Views: 3,003
Posted By roondar
A person can't really be deluded about what...

A person can't really be deluded about what constitutes a good game, since a game being good or bad is a purely subjective quality. Apart from measurable technical elements (which are much less...
Forum: OT - General 11 October 2019, 17:12
Replies: 8
Views: 270
Posted By roondar
My (kind-of) absence of late

For those who are interested and in the spirit of openness (which usually helps me), I thought I'd write a quick note on why I've been mostly absent for the past few weeks.

The long and short of...
Forum: Coders. Asm / Hardware 11 October 2019, 16:56
Replies: 23
Views: 715
Posted By roondar
Huh, I thought adda.w was ever so slightly...

Huh, I thought adda.w was ever so slightly faster...

Anyway, thanks for the explanation. Makes sense to use .l in all cases if they're the same speed anyway (unless you are naughty and don't clear...
Forum: Nostalgia & memories 11 October 2019, 16:46
Replies: 82
Views: 3,003
Posted By roondar
Seems we still have a long way to go until we can...

Seems we still have a long way to go until we can accept just how overrated 8 & 16 bit consoles and their games are. Let alone modern consoles, which are basically just a poor mans PC. Oh well.
Forum: Coders. Contest 11 October 2019, 16:31
Replies: 1,599
Views: 111,328
Posted By roondar
A very nice box. Might even call it a legendary...

A very nice box. Might even call it a legendary box.
For a legendary effort :)
Forum: Nostalgia & memories 11 October 2019, 16:27
Replies: 82
Views: 3,003
Posted By roondar
<shrug> almost all 'classic' games aren't all...

<shrug> almost all 'classic' games aren't all that good.
So yeah, most Amiga games from the 1980's and 1990's are not all that good.

Main difference between systems is (IMHO) that for the Amiga...
Forum: Coders. Asm / Hardware 11 October 2019, 16:22
Replies: 23
Views: 715
Posted By roondar
Am I missing something here? I thought adding a...

Am I missing something here?
I thought adding a 16 bit signed value to an address register using add.w was safe?

Or is the lesson here that you can forget that the value needs to be in that range...
Forum: Retrogaming General Discussion 20 September 2019, 17:08
Replies: 100
Views: 3,982
Posted By roondar
It's weirder than you think. The MD actually has...

It's weirder than you think. The MD actually has specific screen modes for PAL screens that do use a bigger portion of the screen (240 lines vs the Amiga's 256). It's just that AFAIK no games...
Forum: Coders. Contest 14 September 2019, 23:59
Replies: 1,599
Views: 111,328
Posted By roondar
Grats! That is awesome news!

Grats! That is awesome news!
Forum: Coders. Contest 14 September 2019, 23:23
Replies: 1,599
Views: 111,328
Posted By roondar
DMA cost of my method is high indeed. Copperlist...

DMA cost of my method is high indeed. Copperlist is also large. I'd not actually use it as is in an OCS game - it was more of a thought experiment gone wild than anything else. My hope was that it...
Forum: Amiga scene 06 September 2019, 10:53
Replies: 332
Views: 33,830
Posted By roondar
The full source code (and source data) for...

The full source code (and source data) for Turrican 3 is online somewhere. That might give an indication.
Forum: Coders. General 06 September 2019, 10:00
Replies: 33
Views: 1,280
Posted By roondar
Now we're talking AGA setting anyway, here's the...

Now we're talking AGA setting anyway, here's the way to select banks & select between upper and lower 12 bits. To select the colour bank, use register BPLCON3 ($106). Bits 13-15 select which bank you...
Forum: Retrogaming General Discussion 05 September 2019, 16:12
Replies: 332
Views: 12,736
Posted By roondar
It all depends on what you consider 'good enough'...

It all depends on what you consider 'good enough' in case of porting. I've noticed that a decent number of people in the Amiga community only seem to consider a port worthwhile if it's more or less...
Forum: Coders. Blitz Basic 05 September 2019, 15:12
Replies: 31
Views: 953
Posted By roondar
Yes, many tricks are used. Usually only the...

Yes, many tricks are used. Usually only the programmers or rather observant people notice it.

Still happens to this day - many games (even on PC) don't have full resolution lightning, shadows or...
Forum: Coders. General 05 September 2019, 15:07
Replies: 33
Views: 1,280
Posted By roondar
Life is too short to learn all things. Pick what...

Life is too short to learn all things. Pick what you want to learn and use that.

I do use assembly, but I'm just a gigantic sucker for banging the hardware of retro computers directly. Looking at...
Forum: Coders. General 05 September 2019, 13:05
Replies: 33
Views: 1,280
Posted By roondar
It seems to me the problem here is that 'graphic...

It seems to me the problem here is that 'graphic techniques' and 'coding' are very close on retro platforms like the Amiga ;)
I guess we had indeed moved from 'copper reloading exists' into 'coding...
Forum: Coders. General 05 September 2019, 12:45
Replies: 33
Views: 1,280
Posted By roondar
Yup, AGA is a lot less elegant to code for and...

Yup, AGA is a lot less elegant to code for and has all sorts of alignment restrictions and stuff like colour banking and having to set colours in two writes to worry about. OCS is much nicer to...
Forum: Retrogaming General Discussion 05 September 2019, 12:40
Replies: 332
Views: 12,736
Posted By roondar
I seem to recall a half-finished demo of one of...

I seem to recall a half-finished demo of one of the Raiden games for AGA Amiga's floating about a few years ago. Started back in the day to be an official port, but canceled because of the lack of an...
Forum: Coders. General 05 September 2019, 12:36
Replies: 33
Views: 1,280
Posted By roondar
You're welcome! If you have more questions, I'm...

You're welcome!
If you have more questions, I'm more than happy to help :great

On the topic of colour registers:

Amiga colour registers do not have any form of alpha transparency
AGA...
Forum: Amiga scene 05 September 2019, 11:00
Replies: 190
Views: 16,447
Posted By roondar
I agree fully with the 'atmospheric SFX' crowd....

I agree fully with the 'atmospheric SFX' crowd. If done well it can make a game incredibly tense or exciting. The same can also be done with music, but I prefer the SFX to be able to shine in games...
Forum: Amiga scene 05 September 2019, 10:51
Replies: 332
Views: 33,830
Posted By roondar
To be fair, those tech demos started out because...

To be fair, those tech demos started out because I just love to tinker with stuff and the Amiga chipset offers so much room to tinker with :p
Forum: Coders. Blitz Basic 05 September 2019, 10:40
Replies: 31
Views: 953
Posted By roondar
FYI, I've written working scrollers on the Amiga...

FYI, I've written working scrollers on the Amiga before and have provided several Amiga programs using scrolling, with full source code, on my website. These are also linked to on EAB in several...
Forum: Coders. Blitz Basic 05 September 2019, 10:17
Replies: 31
Views: 953
Posted By roondar
I know :D:D:D Of course, but the idea is...

I know :D:D:D

Of course, but the idea is (obviously) to only blit as much as you need per frame. For 'normal' games you just don't need that many tiles blit per frame to keep up with scrolling....
Forum: Amiga scene 05 September 2019, 10:02
Replies: 332
Views: 33,830
Posted By roondar
Yeah, the problem of getting the basics working...

Yeah, the problem of getting the basics working (such a scrolling screen with some bobs on it) is not that much work and makes it look like you're very far along.

I suppose that's good for...
Forum: Coders. General 05 September 2019, 09:58
Replies: 33
Views: 1,280
Posted By roondar
No problem, happy to help :) Know that I did...

No problem, happy to help :)

Know that I did make a small error in the Copperlist (one of the WAIT commands was not correct) which I have corrected just now.
Forum: Coders. Blitz Basic 05 September 2019, 00:37
Replies: 31
Views: 953
Posted By roondar
Well, a smart person only blits about a block per...

Well, a smart person only blits about a block per frame for the optimal scroller. So that would make it two per frame. Not a big deal really ;)


Yup, it did. And happy to be of service.


I...
Forum: Coders. Blitz Basic 05 September 2019, 00:20
Replies: 31
Views: 953
Posted By roondar
Just a small, friendly warning: what you're doing...

Just a small, friendly warning: what you're doing will eventually likely crash the Amiga as scrolling the display always also means you're moving through memory*. Once you start seeing 'garbage' on...
Forum: Coders. General 04 September 2019, 15:22
Replies: 33
Views: 1,280
Posted By roondar
You're welcome! There's tons more I could...

You're welcome!

There's tons more I could add, including a lot about registers etc. But for now I'll wait and see what people want to know and how much of it fits this thread ;)

That said, I...
Forum: Coders. General 04 September 2019, 14:20
Replies: 33
Views: 1,280
Posted By roondar
Part 3: an example Copperlist Let's look at all...

Part 3: an example Copperlist
Let's look at all this in the form of an example. In this example, I skip the part where the Copper sets up the bitplane pointers and other display setting. I can give...
Showing results 1 to 40 of 1316

 
Forum Jump

All times are GMT +2. The time now is 21:55.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Page generated in 0.15414 seconds with 10 queries