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Forum: support.Hardware Today, 13:20
Replies: 36
Views: 1,162
Posted By AmigaHope
Yes, the menu will go away. The early start menu...

Yes, the menu will go away. The early start menu is in the ROM.

Also the IDE port and PCMCIA port will stop working as 1.3 has no drivers for these.
Forum: support.Hardware Today, 09:54
Replies: 36
Views: 1,162
Posted By AmigaHope
You need the ROM image, and sufficient extra RAM...

You need the ROM image, and sufficient extra RAM to hold the ROM image in memory. If it's not true fast RAM performance may suffer.
Forum: Coders. General Yesterday, 06:33
Replies: 19
Views: 2,035
Posted By AmigaHope
Stupid and definitely-not-optimal algorithm I...

Stupid and definitely-not-optimal algorithm I came up with a long time ago that seemed to work pretty well:

Work in HSV space. Find median brightness value, quantize brightest half to 32 colors...
Forum: support.Hardware 10 July 2020, 21:05
Replies: 36
Views: 1,162
Posted By AmigaHope
Just realized I should probably touch on this...

Just realized I should probably touch on this some more.


The A500+ is the rev8a motherboard, which has an extra address line to the Agnus socket that allows it to address up to 2M of chip RAM....
Forum: support.Hardware 10 July 2020, 10:36
Replies: 36
Views: 1,162
Posted By AmigaHope
A600 one might work (A1200 one definitely won't),...

A600 one might work (A1200 one definitely won't), but you can buy a brand new 3.1 licensed ROM chip for $20. 3.1 won't break compatibility any more than 2.04 and will have increased compatibility...
Forum: Coders. Asm / Hardware 10 July 2020, 09:18
Replies: 36
Views: 1,780
Posted By AmigaHope
Have you tried the Phase5 cpu060 command that...

Have you tried the Phase5 cpu060 command that came with the card?

Also, I doublechecked 68060 manual, and disabling copyback also disables write-allocate. There is still the 16-byte store/write...
Forum: support.Hardware 09 July 2020, 08:56
Replies: 36
Views: 1,162
Posted By AmigaHope
Fair enough, although your A600 should be able to...

Fair enough, although your A600 should be able to run almost all of them (didn't realize you had an A600!). Almost every piece of software designed for 1.3 will work on 2.x. This is because stuff...
Forum: support.Hardware 09 July 2020, 05:34
Replies: 36
Views: 1,162
Posted By AmigaHope
Yes. Most/all rev 6as shipped with an ECS Agnus...

Yes. Most/all rev 6as shipped with an ECS Agnus (but an OCS Denise). ECS Agnus is all you need to do NTSC/PAL switching (ECS Denise is only needed to do better-than-28Khz audio, and higher pixel...
Forum: Coders. Asm / Hardware 09 July 2020, 03:49
Replies: 201
Views: 18,585
Posted By AmigaHope
Given that it's just 16 colors, why not an AGA...

Given that it's just 16 colors, why not an AGA dual-playfield modification? Then the background layer routine could be replaced with a scroll routine, freeing up performance. If the background is...
Forum: Coders. Asm / Hardware 08 July 2020, 18:00
Replies: 36
Views: 1,780
Posted By AmigaHope
That's definitely the better solution. The MMU...

That's definitely the better solution. The MMU gives you much finer control over the system.


Cache problems are the result of one device having the wrong idea of what's in memory vs. the other...
Forum: Coders. Asm / Hardware 07 July 2020, 05:59
Replies: 36
Views: 1,780
Posted By AmigaHope
ZZ9000 probably does on anything with big data...

ZZ9000 probably does on anything with big data cache, since it needs to map is as non cacheable. Not needed on a 68020 since it has no data cache, and the 68030 data cache is tiny so it might be fine...
Forum: support.Hardware 06 July 2020, 02:27
Replies: 38
Views: 1,467
Posted By AmigaHope
Honestly this looks like a great product....

Honestly this looks like a great product. Off-the-shelf AC brick, then a custom power conditioner. Yeah it's an extra box but if it delivers best-in-class power, that's worth it.
Forum: Coders. Asm / Hardware 06 July 2020, 01:37
Replies: 36
Views: 1,780
Posted By AmigaHope
Might need to just get a real 060 then. =/ ...

Might need to just get a real 060 then. =/

One cheap hack that would almost certainly work is to solder a wire between TBI and TCI pin and then disabling copyback. You'd be losing copyback, but...
Forum: Coders. Asm / Hardware 04 July 2020, 18:49
Replies: 36
Views: 1,780
Posted By AmigaHope
This is probably the MMU not behaving as it...

This is probably the MMU not behaving as it should because it's an EC part. =P The registers seem to work but it's not doing anything. The rest of the system works OK because the card is probably...
Forum: support.Hardware 04 July 2020, 18:28
Replies: 6
Views: 279
Posted By AmigaHope
btw unless you really need it, consider...

btw unless you really need it, consider downgrading any ethernet connection you have to 10-Base-T, even if you have a 100-Base-T card. Zorro III struggles with a 100 Megabit connection, and still...
Forum: support.Hardware 04 July 2020, 18:14
Replies: 13
Views: 445
Posted By AmigaHope
Check if the Agnus chip is seated correctly. Give...

Check if the Agnus chip is seated correctly. Give it a good push down with your finger. It's one of the most frequent causes of green screens. You could have jostled it when you applied pressure to...
Forum: Amiga scene 03 July 2020, 22:43
Replies: 45
Views: 2,067
Posted By AmigaHope
Back in the day those EA folding album sleeves...

Back in the day those EA folding album sleeves were a mark of quality. Almost every game EA released then was good. =P But yeah there were a few Amiga ports in the mix that were not exactly coded...
Forum: Amiga scene 03 July 2020, 03:00
Replies: 45
Views: 2,067
Posted By AmigaHope
Only the A1000 had a dog on the design team. The...

Only the A1000 had a dog on the design team. The A500 was made entirely by humans, thus the A1000 provides a greater sense of diversity in our more woke era.
Forum: support.Hardware 02 July 2020, 17:14
Replies: 36
Views: 1,162
Posted By AmigaHope
Absolutely, but that requires running software to...

Absolutely, but that requires running software to turn off the low pass filter, and at that point you can just run WhichAmiga or whatever to find out which Agnus you have.

Checking the color you...
Forum: Retrogaming General Discussion 02 July 2020, 01:28
Replies: 10
Views: 945
Posted By AmigaHope
I don't get why the STE was so bloody expensive....

I don't get why the STE was so bloody expensive. It included a couple of extra chips but they can't have been so expensive as to add 100 to the cost.
Forum: support.Hardware 01 July 2020, 22:29
Replies: 36
Views: 1,162
Posted By AmigaHope
For the purposes of switching between NTSC and...

For the purposes of switching between NTSC and PAL, all you need is to know is if you have an OCS or ECS Agnus. You can determine this using SysInfo, WhichAmiga, etc. If you are using AmigaOS 2.0 or...
Forum: support.Hardware 01 July 2020, 19:43
Replies: 21
Views: 1,032
Posted By AmigaHope
It would be awesome if it would bring forward the...

It would be awesome if it would bring forward the Indivision ECS feature of 100Hz output of 50Hz modes, thus allowing operation on displays that support 100Hz but not 50Hz. (There are many displays...
Forum: Coders. Asm / Hardware 29 June 2020, 21:57
Replies: 40
Views: 2,457
Posted By AmigaHope
Except both instructions do access memory as they...

Except both instructions do access memory as they both have to be fetched from memory, this being the issue with self-modifying code. My question is if the dispatch will execution instruction B in...
Forum: Coders. Asm / Hardware 29 June 2020, 19:47
Replies: 40
Views: 2,457
Posted By AmigaHope
OK. I know for sure the dispatch looks to see if...

OK. I know for sure the dispatch looks to see if the first instruction touches any of the registers or memory addresses used as data in the second instruction, and will not parallelize them if...
Forum: New to Emulation or Amiga scene 29 June 2020, 19:38
Replies: 10
Views: 823
Posted By AmigaHope
Yeah, the earliest viruses on the Amiga were...

Yeah, the earliest viruses on the Amiga were bootblock viruses. They'd mimic a normal AmigaOS bootblock, but insert the virus into memory (like TSR programs on MS-DOS) that would periodically run the...
Forum: support.Hardware 29 June 2020, 19:08
Replies: 36
Views: 1,162
Posted By AmigaHope
The two round black DIN connectors on the back...

The two round black DIN connectors on the back are an analog RGB input, and a digital RGBI input. Because this is an NTSC 1084S, there is no SCART input (although there is a breakout space for it). ...
Forum: support.Hardware 29 June 2020, 03:07
Replies: 36
Views: 1,162
Posted By AmigaHope
If you mean the 1084S, and you mean input, then...

If you mean the 1084S, and you mean input, then yes it can handle both NTSC and PAL frequencies *ON THE RGB INPUT*. You will need to adjust the vertical size/position dials when you switch to make...
Forum: Coders. Asm / Hardware 27 June 2020, 13:18
Replies: 40
Views: 2,457
Posted By AmigaHope
Does the second example I listed actually exist?...

Does the second example I listed actually exist? I don't think the superscalar dispatch will parallelize self-modifying code because it will see the dependency caused by the first instruction, unless...
Forum: Coders. Asm / Hardware 27 June 2020, 02:57
Replies: 40
Views: 2,457
Posted By AmigaHope
Why would you want to do this? Just as a means of...

Why would you want to do this? Just as a means of slowing down the CPU even more? AFAIK having superscalar on doesn't cause any compatibility problems with anything. Only possibility I can think of...
Forum: Amiga scene 25 June 2020, 17:29
Replies: 22
Views: 1,681
Posted By AmigaHope
Any change in the fortunes of Commodore in the...

Any change in the fortunes of Commodore in the 90's would have had to have started back in the 80's when Commodore was still a major player in the industry.

They needed forward-thinking leadership...
Forum: Coders. Asm / Hardware 25 June 2020, 13:11
Replies: 19
Views: 759
Posted By AmigaHope
Look, I get where you're coming from. There may...

Look, I get where you're coming from. There may well be some very early 68040 cards that do not set burst inhibit properly and instead rely entirely on cache control to avoid burst. This is a broken...
Forum: support.Hardware 25 June 2020, 12:47
Replies: 5
Views: 355
Posted By AmigaHope
Zorro III DMA is really touchy and few have...

Zorro III DMA is really touchy and few have implemented it, and only one card really mastered it (the Deneb).

Proper DMA on the A1200 via Budgie has never been figured out.

Moreover the whole...
Forum: Amiga scene 25 June 2020, 12:39
Replies: 22
Views: 1,681
Posted By AmigaHope
The Playstation didn't have particularly advanced...

The Playstation didn't have particularly advanced hardware. What was unique about it was its design of having a fast (albeit shit-quality) geometry transformation engine that had a fast...
Forum: Coders. Asm / Hardware 23 June 2020, 10:07
Replies: 19
Views: 759
Posted By AmigaHope
My 2 cents: Whenever I had to duplicate a...

My 2 cents:

Whenever I had to duplicate a chunk of memory for some reason (e.g. create a backup buffer of "original data" when I'm going to modify the original) as long as the data was bigger...
Forum: Retrogaming General Discussion 23 June 2020, 09:15
Replies: 967
Views: 137,705
Posted By AmigaHope
Any chance for a Linux build if you're doing a...

Any chance for a Linux build if you're doing a rewrite with Qt libraries? =)
Forum: support.Hardware 22 June 2020, 20:40
Replies: 5
Views: 355
Posted By AmigaHope
I highly recommend you use a DOM instead of...

I highly recommend you use a DOM instead of compactflash, you'll get better performance and better reliability.

Elbox was never clear about what their revisions did on FastATA, although at some...
Forum: Coders. Asm / Hardware 16 June 2020, 00:29
Replies: 19
Views: 759
Posted By AmigaHope
Sounds like there'd be a market in fixing these...

Sounds like there'd be a market in fixing these boards to add burst inhibit. Just some GALs piggbacked on that assert the line when it snoops an address matching chip and zorro space.
Forum: Nostalgia & memories 15 June 2020, 15:20
Replies: 8
Views: 928
Posted By AmigaHope
It got even crazier with xfloppy.device. 1.1M on...

It got even crazier with xfloppy.device. 1.1M on a DD 3.5" floppy. D=
Forum: Amiga scene 15 June 2020, 05:00
Replies: 6
Views: 755
Posted By AmigaHope
I used daigokai but I got crashes from time to...

I used daigokai but I got crashes from time to time. =(
Forum: Retrogaming General Discussion 14 June 2020, 02:25
Replies: 3
Views: 450
Posted By AmigaHope
It's more than that though, it's like saying if...

It's more than that though, it's like saying if the Amiga had the same GPU as the Neogeo you could probably make the Amiga do the same thing.

As I understand it, the Y-unit doesn't have hardware...
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