English Amiga Board


Go Back   English Amiga Board > Search Forums

Showing results 1 to 40 of 3824
Search took 0.36 seconds.
Search: Posts Made By: ross
Forum: Coders. Asm / Hardware 25 September 2022, 17:41
Replies: 4
Views: 544
Posted By ross
Correct. At CCK#6 it fetch from [COP1LC]. ...

Correct. At CCK#6 it fetch from [COP1LC].


This is right.
The Copper goes into STOP (i.e. no more fetches) if it writes to registers to which it has no right (<$80).
CDANG increases the...
Forum: Amiga scene 21 September 2022, 19:28
Replies: 40
Views: 2,997
Posted By ross
LOL, in Italian is the same verbal form, and: -...

LOL, in Italian is the same verbal form, and:
- third-person singular present indicative
- second-person singular imperative
so it can also be good for males :D
Forum: Amiga scene 20 September 2022, 13:33
Replies: 4
Views: 753
Posted By ross
Nice. The touch of dissident's code very...

Nice.

The touch of dissident's code very visible in it ;)
Forum: Amiga scene 18 September 2022, 12:41
Replies: 20
Views: 2,955
Posted By ross
Floppy disk Oh, it's been a few years here ;) I dust off...

Oh, it's been a few years here ;)

I dust off this old thread for a reason: this game never worked on a standard Amiga (at least the latest v6.0).
It requires some kind of genlock connected to the...
Forum: HOL contributions 16 September 2022, 12:44
Replies: 5
Views: 743
Posted By ross
Pages: 7, 8, partly 9 - Italiano Pages: partly...

Pages: 7, 8, partly 9 - Italiano
Pages: partly 9, 10, 11, 12 - Français

You recognize pages in Deutsch ;)
Forum: support.WinUAE 13 September 2022, 19:43
Replies: 22
Views: 4,613
Posted By ross
Nice! :great

Nice! :great
Forum: project.Amiga Game Factory 10 September 2022, 17:17
Replies: 539
Views: 103,719
Posted By ross
Enhanced to Turrican-O With this in...

Enhanced to Turrican-O

With this in background to promote the release:
https://www.youtube.com/watch?v=7R76tRGx2ug

This theme song is something, but you had to be a pre-teen in early '80 Italy...
Forum: project.Amiga Game Factory 08 September 2022, 11:39
Replies: 539
Views: 103,719
Posted By ross
Turricano From IGN Italia: "Ebbene, "narra...

Turricano

From IGN Italia:
"Ebbene, "narra la leggenda che", per scegliere il titolo del suo nuovo gioco, un indeciso Manfred Trenz sbirciò a casaccio l'elenco telefonico di Dusseldorf, scovando...
Forum: Coders. Asm / Hardware 04 September 2022, 13:59
Replies: 6
Views: 930
Posted By ross
It's not only a problem of HSYNC or HBLANK stuff...

It's not only a problem of HSYNC or HBLANK stuff (that need to be anyway considered), but also of DMA channels used for OS/System vital support (refresh, floppy data, audio, at least one sprite..)....
Forum: Coders. System 04 September 2022, 11:29
Replies: 6
Views: 1,006
Posted By ross
It a 'bug' in KS1.3 and 1MB chip machines (it's...

It a 'bug' in KS1.3 and 1MB chip machines (it's the same problem that affects reset-proof programs in this very configuration).

If I'm not wrong SetPatch takes care of it.
Forum: Coders. Asm / Hardware 04 September 2022, 11:17
Replies: 6
Views: 930
Posted By ross
No. Two problems, with an insurmountable...

No.

Two problems, with an insurmountable one.
- the required horizontal frequency would be too low and therefore unlikely to be supported;
- Alice HTOTAL counter would overflow:...
Forum: Retrogaming General Discussion 03 September 2022, 10:06
Replies: 19
Views: 1,018
Posted By ross
I had even forgotten that I had fixed the Italian...

I had even forgotten that I had fixed the Italian version in the past!
(http://eab.abime.net/showthread.php?t=95352)

---

About the English version, specifically the [compilation Delphine...
Forum: Retrogaming General Discussion 03 September 2022, 01:40
Replies: 19
Views: 1,018
Posted By ross
By pure luck I'm working on another Delphine game...

By pure luck I'm working on another Delphine game these day.
I have seen that the .cmp files are quite similar to the ones I am managing, so there is a high chance I can patch the ADF :)

Stay...
Forum: Coders. Asm / Hardware 01 September 2022, 20:41
Replies: 20
Views: 1,797
Posted By ross
Yep, this could be a problem. And the fact that...

Yep, this could be a problem.
And the fact that the handler code will not be trivial at all..

But experiments are experiments, curiosity cannot be stopped!

You think that right now I'm...
Forum: Coders. Asm / Hardware 01 September 2022, 20:27
Replies: 20
Views: 1,797
Posted By ross
Well, the point is that your queue disrupt all...

Well, the point is that your queue disrupt all copper effects in the frame.
With this approach you can put some blits in the 'dead spots' of the copper list.

@paraj: I don't know what will come...
Forum: request.Apps 29 August 2022, 15:10
Replies: 26
Views: 6,113
Posted By ross
ross summoning succeeded, now you use the wisdom...

ross summoning succeeded, now you use the wisdom of the ancients.
But remember, it requires a lot of mana!
Forum: Coders. Asm / Hardware 28 August 2022, 17:32
Replies: 41
Views: 2,654
Posted By ross
This is simpler than you might think. There...

This is simpler than you might think.

There is no interaction between the bitplanes DMA channels and those of the Blitter, except for the priority, which is always for the bitplanes.
Then the...
Forum: Coders. Asm / Hardware 28 August 2022, 17:21
Replies: 41
Views: 2,654
Posted By ross
Not explicitly in this very thread, but yes,...

Not explicitly in this very thread, but yes, Agnus does not allow *any* CPU to make two consecutive cycles access to chip RAM.
This is why the actual internal cycles bus usage by the CPU is at least...
Forum: Coders. Asm / Hardware 28 August 2022, 15:28
Replies: 41
Views: 2,654
Posted By ross
Right, thanks :) So, here the fill cases: ...

Right, thanks :)

So, here the fill cases:
/-1-\ /-2-\
A - B - X - Y - OUT

Fill mode extra special case:
If BLTCON0(D) and !BLTCON0(C): Add extra idle cycle. X=idle cycle,Y=D

This...
Forum: Coders. Asm / Hardware 28 August 2022, 13:17
Replies: 41
Views: 2,654
Posted By ross
I'm pretty sure I've tests that do blitter fill...

I'm pretty sure I've tests that do blitter fill with EFE or IFE (and FCI and DESC), that use or not BLTPRI, and with selectable input channels (and with other competing DMA sources also).

Or wait...
Forum: Coders. Asm / Hardware 28 August 2022, 12:11
Replies: 41
Views: 2,654
Posted By ross
Yep, interesting, and this really need to be...

Yep, interesting, and this really need to be checked.

As it is undocumented it can be a specific condition of the OP, not due to the active channels (even if it seems strange to me) or the errata...
Forum: Coders. Asm / Hardware 28 August 2022, 11:53
Replies: 41
Views: 2,654
Posted By ross
Everything has been explained in the continuation...

Everything has been explained in the continuation of the messages.
The OP uses an operation (fill) which combined with the active channels (AD) leaves idle cycles not used by the blitter, even if...
Forum: Coders. Asm / Hardware 28 August 2022, 11:06
Replies: 41
Views: 2,654
Posted By ross
Good summary post roondar! It would be nice...

Good summary post roondar!

It would be nice to have also a complete table of fill and line cases.
They are all data that I probably have scattered in my file mess, too complicated to collect :)
Forum: Coders. Asm / Hardware 28 August 2022, 10:14
Replies: 41
Views: 2,654
Posted By ross
The example code would be trivial. Since the...

The example code would be trivial.

Since the internal bus is at 3.5 MHz and 16 bit, it should be able to read (or write) at 7MB/sec. Unfortunately, the maximum it can reach with *any* CPU is...
Forum: Coders. Asm / Hardware 28 August 2022, 09:41
Replies: 41
Views: 2,654
Posted By ross
@a/b: ah! another important thing! Changing the...

@a/b: ah! another important thing! Changing the blitter registers while it is running does not always lead to corruption, some registers can be written without 'big' damage, simply the new value is...
Forum: Coders. Asm / Hardware 28 August 2022, 09:27
Replies: 41
Views: 2,654
Posted By ross
This is exactly what I was talking about. ...

This is exactly what I was talking about.
Notice that source data in memory is explicit and offset also (so it need to be fetched from chip/slow memory).
This saturate the bus betwhen BLTSIZE write...
Forum: Coders. Asm / Hardware 28 August 2022, 00:15
Replies: 41
Views: 2,654
Posted By ross
Probably you have a combination with idle cycles....

Probably you have a combination with idle cycles.
This combo give the situation that you described.


shhh, do not kick the hornet's nest!

;)
Forum: Coders. Asm / Hardware 28 August 2022, 00:05
Replies: 41
Views: 2,654
Posted By ross
a/b was lucky here :p Can be only by chance...

a/b was lucky here :p

Can be only by chance cause the type of blitter op., or the registers modified, or the line position where blit was started, or ..a/b knows what it does (;)) by accessing...
Forum: Coders. Asm / Hardware 27 August 2022, 23:48
Replies: 41
Views: 2,654
Posted By ross
It all depends on the sequence of cycles of the...

It all depends on the sequence of cycles of the blitter (which depends on the activated channels).
There are many combinations (even to do the same thing) that leave idle cycles that the CPU can...
Forum: Coders. Asm / Hardware 26 August 2022, 09:36
Replies: 33
Views: 2,777
Posted By ross
Yeah, sorry if I derailed the thread a bit, I...

Yeah, sorry if I derailed the thread a bit, I will try to stay on the technical questions :)
Forum: Coders. Asm / Hardware 25 August 2022, 19:25
Replies: 33
Views: 2,777
Posted By ross
Bah.., deleted, I do not feel like controversy. ...

Bah.., deleted, I do not feel like controversy.

We could probably argue for hours and not find points of agreement (I think you are too specific and limiting, and you use *in my opinion* incorrect...
Forum: Coders. Asm / Hardware 25 August 2022, 10:43
Replies: 33
Views: 2,777
Posted By ross
Ah, I missed this, but I see that roondar has...

Ah, I missed this, but I see that roondar has already answered :)
Two other statements that are not true.

First.
Agnus is the arbitrator of the 'internal' memory and therefore any request for...
Forum: Coders. Asm / Hardware 25 August 2022, 09:39
Replies: 33
Views: 2,777
Posted By ross
If before I had the doubt now I have the...

If before I had the doubt now I have the certainty that you are confusing the Minterms with the possible results of the boolean operation applied to the number of inputs.

A Minterm is a Boolean...
Forum: Coders. Asm / Hardware 24 August 2022, 23:42
Replies: 33
Views: 2,777
Posted By ross
hmm, no. Minterms are 8 (2^3), and combinations...

hmm, no.
Minterms are 8 (2^3), and combinations are 256 (2^(2^3)).

If the source channels had been 4 then the Minterms would have been 16, but at that point a whole 16 bit word would have been...
Forum: support.WinUAE 22 August 2022, 22:27
Replies: 17
Views: 1,649
Posted By ross
Stupid Amiga snippet that uses negative...

Stupid Amiga snippet that uses negative addresses, too bad it only works in machines with 24 bit addressing:
suba.l a0,a0
suba.l -20.w,a0 ; <--- :)
move.l a0,12.w
jmp -1(a0)


Do not...
Forum: Coders. Asm / Hardware 17 August 2022, 21:53
Replies: 2
Views: 660
Posted By ross
http://eab.abime.net/showpost.php?p=1481113&postco...

http://eab.abime.net/showpost.php?p=1481113&postcount=26

Pay attention to Add21k, there are different versions and in many configurations they create problems (video corruption and possible...
Forum: Coders. Asm / Hardware 16 August 2022, 14:31
Replies: 10
Views: 1,023
Posted By ross
but I'm unsure how necessary the code is to make...

but I'm unsure how necessary the code is to make it work from Workbench

Just strip all the 'change dir' related code, wb stuff is at start.

Something like:
ThisTask equ $114
pr_CLI...
Forum: Coders. Asm / Hardware 16 August 2022, 14:21
Replies: 10
Views: 1,023
Posted By ross
gah! If I'm not wrong this is code I wrote......

gah!
If I'm not wrong this is code I wrote... :lol

But when I wrote it the purpose was exactly the opposite, that is to go back to the directory of the executable and then load the files from its...
Forum: Coders. Asm / Hardware 16 August 2022, 13:20
Replies: 10
Views: 1,023
Posted By ross
hmm, how do you open the 'diskid'? With...

hmm, how do you open the 'diskid'?
With something like "DISKNAMEn:diskid"?

That the system looks for in the 'current directory' first and for that it asks you the disk of the executable?
Forum: Coders. Asm / Hardware 15 August 2022, 23:01
Replies: 10
Views: 1,023
Posted By ross
I would try something with input.device. ...

I would try something with input.device.

IECLASS_DISKREMOVED The disk has been removed
IECLASS_DISKINSERTED The disk has been inserted
Showing results 1 to 40 of 3824

 
Forum Jump

All times are GMT +2. The time now is 11:55.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Page generated in 0.31595 seconds with 10 queries