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Forum: Amiga scene Yesterday, 22:19
Replies: 24
Views: 1,382
Posted By hooverphonique
I'm not familiar with the original Hang On, but...

I'm not familiar with the original Hang On, but somehow the melody reminds me of Irgendwie, Irgendwo, Irgendwann by Nena:
https://www.youtube.com/watch?v=oas5nAlfrwg
Forum: Hardware mods 14 February 2020, 18:10
Replies: 172
Views: 9,654
Posted By hooverphonique
Here's the correct link :) ...

Here's the correct link :)
https://www.mike-stirling.com/2020/02/fpga-accelerator-for-the-amiga-500/
Forum: Amiga scene 12 February 2020, 20:04
Replies: 511
Views: 50,333
Posted By hooverphonique
Yes, of course the clock difference (1%) is way...

Yes, of course the clock difference (1%) is way too small to make up for it. And with the same number of dma slots per line, it wouldn't even matter. Silly me :)
Forum: Amiga scene 12 February 2020, 17:43
Replies: 511
Views: 50,333
Posted By hooverphonique
But is a true NTSC machine not exactly as fast...

But is a true NTSC machine not exactly as fast (per frame) as a PAL machine?

If you switch a PAL machine to NTSC, the base clock of the system doesn't change, but a TRUE NTSC machine has higher...
Forum: Retrogaming General Discussion 10 February 2020, 12:51
Replies: 87
Views: 3,282
Posted By hooverphonique
You can clear about 3.3 MBps using the blitter...

You can clear about 3.3 MBps using the blitter (assuming no dma contention).


I'm not sure what you mean by 'composite of sprites and playfields that aren't bitplane', but you could restore the...
Forum: Amiga scene 04 February 2020, 11:10
Replies: 511
Views: 50,333
Posted By hooverphonique
I also noticed fragments/gfx garbage on the...

I also noticed fragments/gfx garbage on the stream.. It is quite noticable if you pay attention..
Forum: support.Hardware 29 January 2020, 14:18
Replies: 3
Views: 176
Posted By hooverphonique
Yes, SpeedRamsey is indeed twiddling the skip...

Yes, SpeedRamsey is indeed twiddling the skip bit. That ~18% increase looks right; IIRC the skip feature reduces memory access time from 5 to 4 cycles (-20%).
I doubt you would see anywhere near 18%...
Forum: support.Hardware 29 January 2020, 11:55
Replies: 3
Views: 176
Posted By hooverphonique
Basically, you need to use 1MB,2MB,4MB or 8MB...

Basically, you need to use 1MB,2MB,4MB or 8MB modules. With 2MB or 8MB, you can only use two modules at a time (1 in every second slot).
Using larger modules may work, but since they will have some...
Forum: Coders. Asm / Hardware 27 January 2020, 14:36
Replies: 9
Views: 431
Posted By hooverphonique
I wouldn't say that 'pairing' as described in the...

I wouldn't say that 'pairing' as described in the article is a 68000 concept; it's rather an artefact of the ST bus design
Forum: support.Hardware 24 January 2020, 18:42
Replies: 188
Views: 26,195
Posted By hooverphonique
Probably not - I think the pinout is wrong. I am...

Probably not - I think the pinout is wrong. I am not sure if you can get 2MB chipmem (total) with the A314 without using an A500+ mobo..
Forum: support.Hardware 24 January 2020, 12:34
Replies: 188
Views: 26,195
Posted By hooverphonique
The A314 works by 'replacing'/extending physical...

The A314 works by 'replacing'/extending physical ram in the machine with its own internal memory. Thus you will get the most out of it by disabling motherboard ram and let the A314 handle all of it.
Forum: support.WinUAE 23 January 2020, 15:04
Replies: 35
Views: 1,640
Posted By hooverphonique
It's not a NOP - it will read whatever was...

It's not a NOP - it will read whatever was leftover on the bus, and it with d5, then write the result to dmacon.
Forum: Coders. Asm / Hardware 22 January 2020, 15:10
Replies: 17
Views: 583
Posted By hooverphonique
It isn't about alignment/padding, but about only...

It isn't about alignment/padding, but about only considering the low byte when adding the numbers, which is useful if the index register contains other data.
I had a recent case where I needed to...
Forum: Coders. Asm / Hardware 22 January 2020, 12:27
Replies: 17
Views: 583
Posted By hooverphonique
The processor addresses frame relative to the...

The processor addresses frame relative to the address of the move instruction, i.e. an offset - this offset is always 16 bits and thus smaller than the full 32 bit address, i.e. a smaller resulting...
Forum: support.Apps 21 January 2020, 18:22
Replies: 19
Views: 921
Posted By hooverphonique
Interesting - I wasn't aware that DMA load would...

Interesting - I wasn't aware that DMA load would affect custom register access/interrupt latency when running code from fastram - or maybe I just didn't remember :D
Forum: support.Apps 20 January 2020, 22:03
Replies: 19
Views: 921
Posted By hooverphonique
That should only be the case on Amigas without...

That should only be the case on Amigas without fastram.
Forum: support.Games 17 January 2020, 12:30
Replies: 12
Views: 742
Posted By hooverphonique
:great :D:D

:great :D:D
Forum: support.Hardware 16 January 2020, 11:35
Replies: 6
Views: 483
Posted By hooverphonique
yes, buster takes care of communication between...

yes, buster takes care of communication between the zorro slots and the rest of the machine.
Forum: Retrogaming General Discussion 11 January 2020, 23:28
Replies: 5
Views: 729
Posted By hooverphonique
Yes. I think that's referred to as 'stencil...

Yes. I think that's referred to as 'stencil vector' in demoscene jargon.
Forum: Hardware mods 11 January 2020, 18:24
Replies: 29
Views: 6,550
Posted By hooverphonique
Romy compatibility is discussed in detail on page...

Romy compatibility is discussed in detail on page one of this thread.
Forum: Retrogaming General Discussion 11 January 2020, 18:02
Replies: 5
Views: 729
Posted By hooverphonique
Because the dithering can be had more or less for...

Because the dithering can be had more or less for free as part of the vector fill/copy process. The dither pattern is just a static image in memory and used when filling/copying.
Forum: support.Games 09 January 2020, 17:08
Replies: 115
Views: 14,971
Posted By hooverphonique
Is it just me, or does it say 'Ross 128b' in the...

Is it just me, or does it say 'Ross 128b' in the logo!? :D
Forum: support.Hardware 07 January 2020, 13:54
Replies: 31
Views: 994
Posted By hooverphonique
I don't think so.. A/B refers to the logic...

I don't think so.. A/B refers to the logic revision burned onto it by the Baseboard manufacturer, I'd assume.
Forum: Coders. Asm / Hardware 06 January 2020, 12:08
Replies: 33
Views: 1,224
Posted By hooverphonique
+1

+1
Forum: Coders. Asm / Hardware 04 January 2020, 23:57
Replies: 33
Views: 1,224
Posted By hooverphonique
As in 1 word after the address of the opcode...

As in 1 word after the address of the opcode (i.e. the same value as PC) ?
Forum: Coders. Asm / Hardware 04 January 2020, 23:49
Replies: 33
Views: 1,224
Posted By hooverphonique
Maybe a bit OT, but what does the asterisk mean?...

Maybe a bit OT, but what does the asterisk mean? Don't think I've seen that addressing mode before.
Forum: Hardware mods 03 January 2020, 18:15
Replies: 322
Views: 26,369
Posted By hooverphonique
If they're connected between a crystal pin and...

If they're connected between a crystal pin and GND, they're likely to be 22pF. Like shown here: https://www.electronics-tutorials.ws/oscillator/crystal.html
Forum: Coders. Asm / Hardware 03 January 2020, 16:26
Replies: 20
Views: 1,638
Posted By hooverphonique
Of course not - don't know why I was convinced of...

Of course not - don't know why I was convinced of that when I normally use 'vasmm68k_mot' :banghead :shocked :D
Forum: Coders. Asm / Hardware 03 January 2020, 14:37
Replies: 20
Views: 1,638
Posted By hooverphonique
You can switch syntax using command line flags -...

You can switch syntax using command line flags - no need for a different binary.

Edit: This is wrong, of course - don't know what I was thinking :-D
Forum: support.Hardware 03 January 2020, 14:34
Replies: 31
Views: 994
Posted By hooverphonique
mergemem won't work as there's at least 512kB of...

mergemem won't work as there's at least 512kB of free address space between those blocks.

and yes, that is a strange contraption indeed.
Forum: Coders. Asm / Hardware 03 January 2020, 00:10
Replies: 20
Views: 1,638
Posted By hooverphonique
Yeah, no assemblers I know of, support that. ...

Yeah, no assemblers I know of, support that.

The macros only "declare" the struct (actually just offsets to labels); you can't use them to instantiate it, because they are not really types which...
Forum: Coders. Asm / Hardware 30 December 2019, 12:40
Replies: 9
Views: 639
Posted By hooverphonique
Did you think about what you're trying to...

Did you think about what you're trying to achieve? I mean, why use "system takeover" if you actually want Workbench to be available while your program runs?
Forum: support.Hardware 25 December 2019, 23:04
Replies: 3
Views: 401
Posted By hooverphonique
the user 'catphish' on here is working on a...

the user 'catphish' on here is working on a solution for something like this using an STM32 microcontroller. I don't know how much is publicly available though, but there's a few posts by him/her.
Forum: Coders. Asm / Hardware 23 December 2019, 15:58
Replies: 11
Views: 600
Posted By hooverphonique
you can't use dos.library without multitasking...

you can't use dos.library without multitasking enabled, so yes, interrupt(s) need to be on during dos I/O. Either INT2 or 6 is generally sufficient, I can't remember which of the two.
Forum: Coders. General 20 December 2019, 11:35
Replies: 153
Views: 17,904
Posted By hooverphonique
For what voxel terrain operation(s) did you use...

For what voxel terrain operation(s) did you use the blitter?
Forum: Coders. General 19 December 2019, 17:41
Replies: 153
Views: 17,904
Posted By hooverphonique
I think they mentioned in the video that AGA runs...

I think they mentioned in the video that AGA runs at 'normal' speed, it's just cpu<->chipram access which is faster.
Forum: Coders. C/C++ 18 December 2019, 22:51
Replies: 13
Views: 943
Posted By hooverphonique
String literals are a special case, and they...

String literals are a special case, and they become heap-allocated objects.

You could use compiler explorer (e.g. godbolt.org) to check this kind of thing with different compilers and options.
...
Forum: Coders. C/C++ 18 December 2019, 11:57
Replies: 13
Views: 943
Posted By hooverphonique
Normally the compiler will reserve space on the...

Normally the compiler will reserve space on the stack for the array when you enter the function, then initialize it in the if-block, but I'm not sure if it could repurpose the stack space between the...
Forum: support.Hardware 17 December 2019, 13:48
Replies: 13
Views: 496
Posted By hooverphonique
Is the gotek able to generate the ID stream?...

Is the gotek able to generate the ID stream? should be trivial to have in its firmware..
Forum: Coders. System 16 December 2019, 12:22
Replies: 8
Views: 647
Posted By hooverphonique
I know it's not an example, but is the info...

I know it's not an example, but is the info (http://amigadev.elowar.com/read/ADCD_2.1/Libraries_Manual_guide/node036B.html) in the RKM/Autodocs not sufficient?
It says that the registers are the...
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