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Forum: Coders. General Today, 11:19
Replies: 128
Views: 17,141
Posted By mcgeezer
Funny you should say this because I do too.... ...

Funny you should say this because I do too....
Squeezing everything into memory and onto disk was something I really enjoyed and I learned a few techniques along the way doing it.
Forum: Coders. Asm / Hardware Yesterday, 23:45
Replies: 43
Views: 1,448
Posted By mcgeezer
The copper list for example is sitting at...

The copper list for example is sitting at $48000-$4fffff

The screens are also setup on boundaries too, but yes i suppose i meant 64k boundaries so that only the low 16 bits of the 24 bit address...
Forum: Coders. Asm / Hardware Yesterday, 19:45
Replies: 43
Views: 1,448
Posted By mcgeezer
It's clear now Dan. ;)

It's clear now Dan. ;)
Forum: Coders. Asm / Hardware Yesterday, 19:43
Replies: 43
Views: 1,448
Posted By mcgeezer
Indeed I have just read page 31 of the HRM. ...

Indeed I have just read page 31 of the HRM.

It reads...."If the Copper is used to start up a sequence of blitter operations, it
must wait for the blitter-finished interrupt before starting...
Forum: Coders. Asm / Hardware Yesterday, 19:30
Replies: 43
Views: 1,448
Posted By mcgeezer
Post #12 Ross.

Post #12 Ross.
Forum: Coders. Asm / Hardware Yesterday, 19:04
Replies: 43
Views: 1,448
Posted By mcgeezer
One question that I have is which isn't obvious...

One question that I have is which isn't obvious to me is why there is no need to wait for the blitter to finish when it is driven by the copper and nasty mode is off?

I someone could explain that...
Forum: Coders. Asm / Hardware Yesterday, 16:28
Replies: 43
Views: 1,448
Posted By mcgeezer
Indeed - thanks everyone for their input, always...

Indeed - thanks everyone for their input, always insightful stuff.

Roondar had the same thought as I did, if they are driving the blitter with the copper than how much time is it taking for them...
Forum: Coders. Asm / Hardware 01 August 2020, 20:55
Replies: 43
Views: 1,448
Posted By mcgeezer
Mega Typhoon Deconstruction

I've been meaning to take a look at Mega Typhoon for a while now and got around to doing it today for the first time.

While I did guess correctly that the game was running in 16 colours, I didn't...
Forum: Amiga scene 30 July 2020, 21:35
Replies: 56
Views: 3,512
Posted By mcgeezer
To be fair though, it’s pretty hard to get a...

To be fair though, it’s pretty hard to get a permy ban at the EAB.
Forum: Amiga scene 27 July 2020, 13:08
Replies: 56
Views: 3,512
Posted By mcgeezer
Not me, although i do have a project with DSG. ...

Not me, although i do have a project with DSG.

Code life is on hold at the moment due to time/covid/real life.

For the record, i have worked with 10shu and found him very easy going and...
Forum: Coders. General 22 July 2020, 22:28
Replies: 16
Views: 1,377
Posted By mcgeezer
At Zeppelin, they were using ST’s to program...

At Zeppelin, they were using ST’s to program Amiga’s and C64’s.

Would love to get hold of the stuff they used to do it.
Forum: Amiga scene 20 July 2020, 13:47
Replies: 173
Views: 8,692
Posted By mcgeezer
As long as the adf is transferrable to a physical...

As long as the adf is transferrable to a physical floppy then i’m fine with that. Doesnt matter what format it is in for me.
Forum: Retrogaming General Discussion 19 July 2020, 14:50
Replies: 31
Views: 1,196
Posted By mcgeezer
One of the key goals of Rygar was to keep it to...

One of the key goals of Rygar was to keep it to one floppy.
In doing so i had to do things like flip all the sprites at load time.
There were other things i did too to ensure the graphics...
Forum: Coders. Asm / Hardware 18 July 2020, 09:21
Replies: 5
Views: 368
Posted By mcgeezer
This is something that can trip you up if you...

This is something that can trip you up if you don't understand the video beam properly.

I would suggest you watch the first 4 minutes of the video below:...
Forum: Coders. Asm / Hardware 14 July 2020, 23:06
Replies: 223
Views: 20,978
Posted By mcgeezer
Here you go ... A video of my thoughts on...

Here you go ...

A video of my thoughts on X2.

https://youtu.be/W7G-9J352lY
Forum: Coders. Asm / Hardware 14 July 2020, 09:58
Replies: 223
Views: 20,978
Posted By mcgeezer
Yeah I'll do one today or tomorrow, pretty...

Yeah I'll do one today or tomorrow, pretty straight forward to do.
Forum: Coders. Asm / Hardware 14 July 2020, 09:06
Replies: 223
Views: 20,978
Posted By mcgeezer
Indeed, in fact the only thing that isn't using...

Indeed, in fact the only thing that isn't using the Blitter is the Starfield which is using the CPU.

Geezer
Forum: Amiga scene 13 July 2020, 23:22
Replies: 173
Views: 8,692
Posted By mcgeezer
A1200 could probably do this from two floppies. ...

A1200 could probably do this from two floppies.
I love the demo and i could probably tempted to write a player if i can understand the frame format easily enough.

Standard ocs cant do it, but aga...
Forum: project.Amiga Game Factory 13 July 2020, 09:28
Replies: 143
Views: 12,972
Posted By mcgeezer
I'm taking a short few weeks from coding as I...

I'm taking a short few weeks from coding as I have a few things on real life.

It's my little boy's birthday on 20th and he wanted an above ground swimming pool.

You'll not believe the work and...
Forum: Coders. General 12 July 2020, 12:21
Replies: 128
Views: 17,141
Posted By mcgeezer
Wow - Awesome work agermose. That is definitely...

Wow - Awesome work agermose.
That is definitely 1942 and love it.
Forum: Coders. Asm / Hardware 11 July 2020, 10:43
Replies: 223
Views: 20,978
Posted By mcgeezer
So I decided this morning to write a little patch...

So I decided this morning to write a little patch for Xenon 2 to show what is actually does with the blitter... which is pretty much everything.

Instructions:
Load the game
Break into WinUAE:-...
Forum: Amiga scene 10 July 2020, 07:16
Replies: 12
Views: 1,031
Posted By mcgeezer
It was previewed at Amiga 34. I had a chat with...

It was previewed at Amiga 34.
I had a chat with the coder last week and its on hold for now.
Forum: Coders. Asm / Hardware 09 July 2020, 11:55
Replies: 223
Views: 20,978
Posted By mcgeezer
From what I can gather by watching the blitter...

From what I can gather by watching the blitter registers they do the following:

Copy the background layer over writing planes 1 and 2.
Copy Blit all the foreground tiles that are on the near...
Forum: Coders. Asm / Hardware 09 July 2020, 10:48
Replies: 223
Views: 20,978
Posted By mcgeezer
I was being sarcastic. :D

I was being sarcastic. :D
Forum: Coders. Asm / Hardware 09 July 2020, 10:01
Replies: 223
Views: 20,978
Posted By mcgeezer
Doing it on aga would be easy, 50 frames no...

Doing it on aga would be easy, 50 frames no problem.
Ocs is a different story.
Forum: project.Amiga Game Factory 08 July 2020, 18:08
Replies: 66
Views: 5,582
Posted By mcgeezer
So I guess I'm in the minority here and it's...

So I guess I'm in the minority here and it's likely a battle I won't win.

All I'll say is this:- I've had nothing but support from the EAB on my posts of project updates, but I do actually show...
Forum: Coders. Asm / Hardware 07 July 2020, 22:20
Replies: 45
Views: 3,395
Posted By mcgeezer
For the past 8 weeks I've been dealing with an...

For the past 8 weeks I've been dealing with an issue with one of Super Sprint files that would intermittently not unpack using the RNC in place unpacker.

Tonight I decided to delve deeper into it...
Forum: Coders. Asm / Hardware 07 July 2020, 18:02
Replies: 45
Views: 3,395
Posted By mcgeezer
There are two versions of Pro Pack. One supports...

There are two versions of Pro Pack. One supports in place the other doesn't (if I recall).
Forum: Coders. Asm / Hardware 07 July 2020, 16:49
Replies: 223
Views: 20,978
Posted By mcgeezer
I think I see what you mean now. You mean...

I think I see what you mean now.

You mean just have a separate 5th plane and vertical scroll that, yeah should work.
Forum: Coders. Asm / Hardware 07 July 2020, 16:20
Replies: 223
Views: 20,978
Posted By mcgeezer
It uses the Blitter for just about everything. ...

It uses the Blitter for just about everything.

Try this poke in WinUAE to turn it from the pile of shit it is into a super top notch shooter:

Break into Winuae with Shift + F12

W 1835 00
W...
Forum: Coders. Asm / Hardware 07 July 2020, 13:28
Replies: 223
Views: 20,978
Posted By mcgeezer
If you triple buffer then u have to do it with...

If you triple buffer then u have to do it with everything, background and foreground. Add that 5th bitplane and it probs doesnt fit into 512kb chip ram.
Forum: project.Amiga Game Factory 07 July 2020, 13:16
Replies: 66
Views: 5,582
Posted By mcgeezer
@ElectriCafe I'm sorry but I'm going to have...

@ElectriCafe

I'm sorry but I'm going to have to be blunt here.

I'm not the EAB police but in your updates you really should be showing something, the old saying that a picture speaks a...
Forum: Coders. Asm / Hardware 07 July 2020, 12:01
Replies: 223
Views: 20,978
Posted By mcgeezer
I can't say for sure but I suspect the game slows...

I can't say for sure but I suspect the game slows down less on the Amiga.
Forum: Coders. Asm / Hardware 06 July 2020, 17:14
Replies: 223
Views: 20,978
Posted By mcgeezer
It's not the worst or the best so a bit of an...

It's not the worst or the best so a bit of an over-reaction giving that the coders in the thread are mulling it over given the game design it is certainly outside of the Amiga's (A500) comfort zone. ...
Forum: Coders. Asm / Hardware 06 July 2020, 14:05
Replies: 223
Views: 20,978
Posted By mcgeezer
Yes, I'll let agree with you that Apidya does...

Yes, I'll let agree with you that Apidya does have parallax, but the parallax doesn't span more than 128px wide which would not be suitable for Xenon 2.
Forum: Coders. Asm / Hardware 06 July 2020, 09:17
Replies: 223
Views: 20,978
Posted By mcgeezer
Would you get any gains by multiplexing the...

Would you get any gains by multiplexing the background layer with sprites (similar to Risky Woods?) I know RW points to the same graphics data per sprite but due to only needing 4 colours does it...
Forum: Coders. Asm / Hardware 05 July 2020, 21:31
Replies: 223
Views: 20,978
Posted By mcgeezer
Hybris and Apidya don’t use parallax scrolling. ...

Hybris and Apidya don’t use parallax scrolling.

But this is the whole point of exploring the xenon 2 paradox, could it have been done better with the constraints they had? (Better as in frame rate)
Forum: Coders. Asm / Hardware 05 July 2020, 19:37
Replies: 223
Views: 20,978
Posted By mcgeezer
There was a thread recently on Facebook relating...

There was a thread recently on Facebook relating to Xenon 2 which discussed the opinions of how bad and good people liked the game. After delving into the code of the game a little Galahad gave me a...
Forum: project.Amiga Game Factory 04 July 2020, 16:52
Replies: 143
Views: 12,972
Posted By mcgeezer
Here we go with development update #8. More...

Here we go with development update #8.

More work on collisions against the collectables and track.

The basis of the game is pretty much there now.

https://youtu.be/TDYRtF5zdj8

Graeme
Forum: Retrogaming General Discussion 03 July 2020, 20:04
Replies: 118
Views: 4,829
Posted By mcgeezer
I don't know enough about AMOS as I'm more of an...

I don't know enough about AMOS as I'm more of an assembler person.

The technique for horizontal scrolling is very simple and requires for little DMA time.

Consider you have a 320x256 screen,...
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