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Forum: Nostalgia & memories Yesterday, 10:43
Replies: 39
Views: 3,908
Posted By AmigaHope
Yeah you could, but why would anyone do that?...

Yeah you could, but why would anyone do that? "Sorry, your program can run, but we won't let you run it."

The most I've ever seen is a warning "Hey your system seems kinda slow, don't blame us if...
Forum: Amiga scene 01 August 2020, 13:44
Replies: 6
Views: 295
Posted By AmigaHope
"Gamma" being another term for "release...

"Gamma" being another term for "release candidate", it could well turn out to be 99.9999% identical to the public release of 1.2
Forum: Amiga scene 01 August 2020, 11:37
Replies: 6
Views: 295
Posted By AmigaHope
At this point, who knows? The rights got shifted...

At this point, who knows? The rights got shifted around a lot after the Gateway/Amiga Inc. buyout.

As far as who cares though, it would be Cloanto, as they are the only active licensor. They...
Forum: Retrogaming General Discussion 01 August 2020, 11:30
Replies: 3
Views: 212
Posted By AmigaHope
A blast of ozone will get rid of the old musty...

A blast of ozone will get rid of the old musty smell, but don't do it for too long as it also corrodes stuff.

And I'll back up that bad smells can come from bad caps, although that's more of a...
Forum: Nostalgia & memories 01 August 2020, 11:29
Replies: 15
Views: 767
Posted By AmigaHope
I was at a family friend's house and they had an...

I was at a family friend's house and they had an A1000. Saw it and immediately begged my parents for an A500.
Forum: support.Hardware 28 July 2020, 06:25
Replies: 1
Views: 132
Posted By AmigaHope
If you get an ECS denise you can do Euro36-type...

If you get an ECS denise you can do Euro36-type modes, which is more tolerable for interlace, or noninterlaced modes in 640x480 but they will be 4 colors.

Simple scandoublers don't give good...
Forum: Nostalgia & memories 27 July 2020, 00:54
Replies: 39
Views: 3,908
Posted By AmigaHope
The only reason a userspace program would require...

The only reason a userspace program would require an 040/060 is if it used MOVE16 with no fallback. Other than that, if it runs on an 060 it will run on an 020. All the userspace instructions on...
Forum: Nostalgia & memories 25 July 2020, 08:45
Replies: 216
Views: 20,191
Posted By AmigaHope
They could have done this on the A500 and it...

They could have done this on the A500 and it would have not been too late. The 3-button joysticks could have been purchasable for A1000 users, and the A500 could have set the standard as it was a...
Forum: Retrogaming General Discussion 25 July 2020, 08:16
Replies: 48
Views: 6,719
Posted By AmigaHope
Interesting thread to revisit since...

Interesting thread to revisit since Starglider/Perifractic did an episode of his youtube show on Witchwood using assets he was able to recover. That was neat!

Cliveminni's EAB account seems to be...
Forum: support.Hardware 25 July 2020, 07:37
Replies: 5
Views: 357
Posted By AmigaHope
I wonder what the maximum horizontal refresh rate...

I wonder what the maximum horizontal refresh rate that AGA can produce is. It goes up to at least 31.44Khz. That would let you calculate what the maximum vertical refresh would be at 2048 lines. (at...
Forum: support.Hardware 25 July 2020, 07:27
Replies: 3
Views: 248
Posted By AmigaHope
Did Buster rev 7 -> 9 really affect PIO devices...

Did Buster rev 7 -> 9 really affect PIO devices that much?
Forum: support.Hardware 25 July 2020, 07:25
Replies: 10
Views: 448
Posted By AmigaHope
They could have conceivably just added an extra...

They could have conceivably just added an extra CLUT buffer to Denise to get around this, and keep the 12-bit palette, but they didn't. I'm not sure why they didn't.
Forum: support.Hardware 25 July 2020, 07:15
Replies: 8
Views: 419
Posted By AmigaHope
This info is a little irrelevant since you got it...

This info is a little irrelevant since you got it working, but for completeness I'll explain.

Any working SCSI card should be able to read your device as long as the card supports the device's...
Forum: support.Hardware 25 July 2020, 07:07
Replies: 32
Views: 892
Posted By AmigaHope
Basically 1.2 -> 1.3 incompatibilities come from...

Basically 1.2 -> 1.3 incompatibilities come from assuming data is in absolutely the same location in the ROM. Only very early A500 era stuff has this problem.

1.3 -> 2.x/3.x incompatibilities come...
Forum: support.Hardware 25 July 2020, 06:57
Replies: 3
Views: 256
Posted By AmigaHope
Beamracing text display of error information on...

Beamracing text display of error information on chip ram failures by directly banging Denise. Detect this scenario through soft reset by abusing any survivable registers from crash. I am lame and...
Forum: request.Music 22 July 2020, 04:56
Replies: 13
Views: 772
Posted By AmigaHope
Back in the day you could also just boot to a...

Back in the day you could also just boot to a minimum environment to dump chipram after a soft-reset, and 99% of the time the mod would still be there (unless it was stored right at the beginning of...
Forum: Coders. System 22 July 2020, 04:43
Replies: 3
Views: 371
Posted By AmigaHope
If you're writing for 3.x and up, best is to use...

If you're writing for 3.x and up, best is to use screenmode selector code instead of the old non-monitor-aware fixed screenmodes.
Forum: Nostalgia & memories 22 July 2020, 04:37
Replies: 216
Views: 20,191
Posted By AmigaHope
The joystick issue could've been solved easily by...

The joystick issue could've been solved easily by shipping 2-3 button joysticks stock with the system. They wouldn't even have to be good joysticks. They just needed to establish the standard. The...
Forum: Hardware mods 21 July 2020, 22:27
Replies: 20
Views: 4,282
Posted By AmigaHope
Any device anywhere on the bus can supply term...

Any device anywhere on the bus can supply term power, assuming it does it properly. As long as it supplies enough term power, it can power the terminators on both ends.

I do think that all...
Forum: Coders. Asm / Hardware 21 July 2020, 18:29
Replies: 40
Views: 2,722
Posted By AmigaHope
That's kind of a slow way to do it. The author...

That's kind of a slow way to do it. The author could just push/invalidate the specific cache lines with CPUSH instead.
Forum: support.Games 18 July 2020, 14:32
Replies: 30
Views: 1,522
Posted By AmigaHope
I mean to make the question more reasonable you...

I mean to make the question more reasonable you could say "A 68000 ECS Amiga with 8MB CHIP RAM" which would conceivably be possible with some weird extra-enhanced ECS Agnus that never existed in real...
Forum: support.Hardware 18 July 2020, 12:22
Replies: 16
Views: 753
Posted By AmigaHope
Sounds like you need to spray deoxit or some...

Sounds like you need to spray deoxit or some other contact cleaner on your connectors. And/or there are some cracked solder joints.
Forum: support.Games 17 July 2020, 16:47
Replies: 30
Views: 1,522
Posted By AmigaHope
They are just as compatible as long as you access...

They are just as compatible as long as you access them with correctly formed library calls.

Incompatibility between OS versions entirely came from people assuming every ROM would have exactly the...
Forum: support.Games 17 July 2020, 11:19
Replies: 30
Views: 1,522
Posted By AmigaHope
Assuming it ran Kickstart 1.2, pretty much every...

Assuming it ran Kickstart 1.2, pretty much every piece of broken software would run fine on your hypothetical machine. The only thing that would break is software that required 1M and assumed that...
Forum: Hardware mods 15 July 2020, 22:22
Replies: 20
Views: 4,282
Posted By AmigaHope
Term power supplies power to the active...

Term power supplies power to the active terminators. The CSPPC doesn't provide power to them so you need a device that supplies term power. Your terminators also must support SE mode since that's...
Forum: Hardware mods 14 July 2020, 14:09
Replies: 20
Views: 4,282
Posted By AmigaHope
Have you tried using 2 active terminators instead...

Have you tried using 2 active terminators instead of using the ACard's terminator?

The way I always set my CSPPC up was:

Active Term
CSPPC
Drive (with term power)
Drive
Drive
Active Term
Forum: support.Hardware 14 July 2020, 12:46
Replies: 43
Views: 1,788
Posted By AmigaHope
The A500+ shipped with the 2.04 ROM, which is...

The A500+ shipped with the 2.04 ROM, which is pretty much the same as the 2.05 ROM in the A600. All 2.05 adds is built-in drivers for PCMCIA and IDE. The only rev 8a boards sold with 1.3 ROMs were...
Forum: support.Hardware 13 July 2020, 07:11
Replies: 43
Views: 1,788
Posted By AmigaHope
It outputs a 50Hz signal on the RGB port. If your...

It outputs a 50Hz signal on the RGB port. If your Amiga doesn't have a chroma modulator like the A500, the luma output will probably still work but it will be in black and white of course.

If it...
Forum: support.Hardware 12 July 2020, 13:20
Replies: 43
Views: 1,788
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 12 July 2020, 09:54
Replies: 43
Views: 1,788
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 11 July 2020, 06:33
Replies: 19
Views: 2,217
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: 43
Views: 1,788
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: 43
Views: 1,788
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: 40
Views: 2,722
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: 43
Views: 1,788
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: 43
Views: 1,788
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: 223
Views: 20,947
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: 40
Views: 2,722
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: 40
Views: 2,722
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: 54
Views: 2,834
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.
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