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Forum: support.Hardware 07 August 2020, 17:14
Replies: 2
Views: 124
Posted By hooverphonique
https://old.pinouts.ru/HD/InternalDisk_pinout.shtm...

https://old.pinouts.ru/HD/InternalDisk_pinout.shtml
Amigas use the Shugart pinout. PC's use a twist in the cable for pin 10-16 which selects drive A or B (A after the twist).

If you can't use a...
Forum: Coders. Asm / Hardware 06 August 2020, 18:34
Replies: 54
Views: 2,307
Posted By hooverphonique
It doesn't make sense if the actual number of...

It doesn't make sense if the actual number of blits per frame makes a difference - sounds more like some timing thing that you accidentally hit after 15 blits (similar to the display dma thing you...
Forum: support.Hardware 05 August 2020, 16:38
Replies: 13
Views: 451
Posted By hooverphonique
An 8MB simm is 8MB, no matter if double sided or...

An 8MB simm is 8MB, no matter if double sided or not - if it fits physically, you can choose either.


If the card doesn't support double-rank simms (2MB,8MB,32MB,etc), then using a 32MB instead...
Forum: News 03 August 2020, 14:30
Replies: 56
Views: 2,832
Posted By hooverphonique
Does it use an FFS root block at a (hardcoded)...

Does it use an FFS root block at a (hardcoded) different block than 880? And then the OS will just load the OFS root from block 880 to access those few files?
Forum: support.Hardware 02 August 2020, 15:08
Replies: 8
Views: 345
Posted By hooverphonique
There wouldn't be much point in an 030 without...

There wouldn't be much point in an 030 without local fast ram - your external 8MB would slow it down..
Forum: support.Hardware 30 July 2020, 11:17
Replies: 15
Views: 682
Posted By hooverphonique
This ^^^

This ^^^
Forum: Coders. System 28 July 2020, 21:37
Replies: 16
Views: 715
Posted By hooverphonique
But those are not the symbols you used in the...

But those are not the symbols you used in the code you showed ;)


If your copper list can grow to 10500 bytes, you need to round up: (10500+7)&fff8

Considering you didn't mention any memory...
Forum: Coders. General 27 July 2020, 11:19
Replies: 4
Views: 365
Posted By hooverphonique
moveq supports 8-bit immediate source operand...

moveq supports 8-bit immediate source operand (-128 to 127) which is then sign-extended to long. Specifying an immediate that doesn't fit in 8 bits is kind of misleading, IMHO (but of course ok as...
Forum: support.Hardware 16 July 2020, 16:42
Replies: 11
Views: 369
Posted By hooverphonique
It should be close to 5V at all times when you're...

It should be close to 5V at all times when you're not explicitly resetting the machine.. Check if resistor R120 (470 ohms) is ok - if it is, I suspect something is wrong with your keyboard.
Forum: support.Hardware 16 July 2020, 11:19
Replies: 12
Views: 931
Posted By hooverphonique
If price is reasonable, I might be interested in...

If price is reasonable, I might be interested in a A3660 board.
Forum: support.Hardware 14 July 2020, 11:10
Replies: 11
Views: 369
Posted By hooverphonique
I had totally forgotten that the A4000 doesn't...

I had totally forgotten that the A4000 doesn't have a direct reset signal from the keyboard like e.g. the A500 has. The A4000 keyboard reset is derived by Gary from the keyboard clock signal (_KBCLK)...
Forum: support.Hardware 13 July 2020, 15:05
Replies: 11
Views: 369
Posted By hooverphonique
Maybe the keyboard keeps the reset signal...

Maybe the keyboard keeps the reset signal continuously pulled low.
Forum: support.Hardware 13 July 2020, 15:04
Replies: 9
Views: 337
Posted By hooverphonique
The 2MB Agnus has an additional DRAM address...

The 2MB Agnus has an additional DRAM address signal, so you would need to wire that separately to address more than 1MB chipram.



The short answer is no - if you want to know the details, you...
Forum: support.Hardware 13 July 2020, 10:16
Replies: 9
Views: 337
Posted By hooverphonique
Gary is the same, you need a different agnus, but...

Gary is the same, you need a different agnus, but it is not pin compatible with the rev 6 board, that's why you need a MegiChip or similar.
Forum: support.Hardware 13 July 2020, 10:13
Replies: 10
Views: 355
Posted By hooverphonique
solder just one end of the resistor in, and put...

solder just one end of the resistor in, and put an ammeter in series to check current - if current is zero when mouse not plugged in, your board should be fine.

could there be a mechanical issue...
Forum: support.Hardware 01 July 2020, 18:45
Replies: 7
Views: 221
Posted By hooverphonique
To me that just looks like a pcb footprint that...

To me that just looks like a pcb footprint that accommodates both sizes (DIP8 or DIP14), and they are interchangeable. If you have a multimeter, you can use the continuity test to check whether I'm...
Forum: support.Hardware 01 July 2020, 13:58
Replies: 7
Views: 221
Posted By hooverphonique
Generally, those types of oscillators have 4...

Generally, those types of oscillators have 4 terminals in either a DIP8 or DIP14 form factor, and can be interchanged if you account for the form factor.

Are you sure the ACA actually has a 6...
Forum: Amiga scene 30 June 2020, 17:30
Replies: 45
Views: 2,307
Posted By hooverphonique
It loads kickstart from disk ;-)

It loads kickstart from disk ;-)
Forum: support.Hardware 29 June 2020, 10:09
Replies: 3
Views: 190
Posted By hooverphonique
:lol

:lol
Forum: support.Hardware 23 June 2020, 13:20
Replies: 1
Views: 179
Posted By hooverphonique
Remember that the oscillator input ground is...

Remember that the oscillator input ground is connected to mains earth, which can easily cause shorts if you're not careful!
Forum: support.Hardware 08 June 2020, 10:27
Replies: 13
Views: 454
Posted By hooverphonique
If both drives seem to have the exact same...

If both drives seem to have the exact same (faulty) behavior, chances are one of the pull-up resistors on the motherboard for the control signals is bad (unless it's just a case of an intermittent...
Forum: Coders. General 03 June 2020, 10:37
Replies: 4
Views: 558
Posted By hooverphonique
Yes.. It looks like the value in D0 (when...

Yes.. It looks like the value in D0 (when entering "record") is used as a busy-wait loop count.
Forum: support.Hardware 29 May 2020, 12:04
Replies: 20
Views: 1,156
Posted By hooverphonique
The resistor is probably ok, but in parallel with...

The resistor is probably ok, but in parallel with something else that provides a similar resistance relative to +5V. I suspect you either have a direct short to GND somewhere, or a component is...
Forum: support.Hardware 28 May 2020, 16:12
Replies: 20
Views: 1,156
Posted By hooverphonique
Did you fix the reset line? If it's floating, it...

Did you fix the reset line? If it's floating, it can cause excessive power consumption in the input circuitry of chips relying on this signal. Also, your computer won't work properly.
Forum: support.Hardware 23 May 2020, 16:59
Replies: 4
Views: 299
Posted By hooverphonique
I think the TF uses proper auto-config, so you...

I think the TF uses proper auto-config, so you shouldn't get an overlap - some of the TF's support using an address range outside 24 bits for its onboard ram (so you could keep all 8MB of SCRAM) ,...
Forum: Coders. Asm / Hardware 22 May 2020, 21:06
Replies: 11
Views: 684
Posted By hooverphonique
You can do conditional stuff in a makefile based...

You can do conditional stuff in a makefile based on host OS (https://stackoverflow.com/questions/714100/os-detecting-makefile).
Forum: Retrogaming General Discussion 19 May 2020, 12:05
Replies: 324
Views: 23,638
Posted By hooverphonique
IIRC, a lot of demoscene productions use this...

IIRC, a lot of demoscene productions use this kind of interleaving for performance - basically you do stuff while waiting for a write to chipmem to complete.
Forum: Retrogaming General Discussion 18 May 2020, 17:12
Replies: 324
Views: 23,638
Posted By hooverphonique
I'm not sure.. Does an Amiga with an 030 have...

I'm not sure.. Does an Amiga with an 030 have RTG? Even if it does, doing bytewise accesses over the Zorro bus to adjacent addresses will slow things down significantly compared to pairing the data.
Forum: Retrogaming General Discussion 18 May 2020, 16:03
Replies: 324
Views: 23,638
Posted By hooverphonique
On an Amiga, you wouldn't use move.b, but move.l...

On an Amiga, you wouldn't use move.b, but move.l for this.
Forum: support.Games 18 May 2020, 10:46
Replies: 25
Views: 1,355
Posted By hooverphonique
What else do you have in your startup-sequence?...

What else do you have in your startup-sequence? Could be something related to AGA screen modes/registers.
Forum: Coders. System 18 May 2020, 10:44
Replies: 4
Views: 713
Posted By hooverphonique
Yes, you can use graphics.library operations to...

Yes, you can use graphics.library operations to write directly to a RastPort.
Forum: Retrogaming General Discussion 17 May 2020, 17:27
Replies: 26
Views: 1,959
Posted By hooverphonique
http://www.pouet.net/prod.php?which=81051

http://www.pouet.net/prod.php?which=81051
Forum: support.Other 15 May 2020, 15:22
Replies: 9
Views: 800
Posted By hooverphonique
The block number of the root block (normally 880)...

The block number of the root block (normally 880) is in the bootblock though - is this not honoured by AmigaDOS, so you could put the root block on track 0?
Forum: support.Other 14 May 2020, 11:16
Replies: 2
Views: 518
Posted By hooverphonique
As far as I've understood, SMR shouldn't be a...

As far as I've understood, SMR shouldn't be a problem unless you're rebuilding a RAID array. I don't have any personal experience with this though.
Forum: support.Hardware 13 May 2020, 15:39
Replies: 6
Views: 405
Posted By hooverphonique
Regarding 2. I think it is usable as actual chip...

Regarding 2. I think it is usable as actual chip ram, but the OS will not allocate it as such because it is detected (via cpu) to sit at C00000, thus addresses in this range will never be used as...
Forum: support.Hardware 11 May 2020, 16:07
Replies: 29
Views: 879
Posted By hooverphonique
They would most likely be programmed differently,...

They would most likely be programmed differently, so don't swap them!
Forum: support.Hardware 11 May 2020, 14:06
Replies: 29
Views: 879
Posted By hooverphonique
Of course I would be eager to try it out as well...

Of course I would be eager to try it out as well :)

My point was, don't go making mods/upgrades when troubleshooting, because they may cause additional issues, making it harder to diagnose.


...
Forum: support.Hardware 11 May 2020, 12:18
Replies: 4
Views: 280
Posted By hooverphonique
There's plenty of options for 20 ohm @ 1W in 2512...

There's plenty of options for 20 ohm @ 1W in 2512 package - they're even available as 3.5W.

I can't tell you what wattage the original A4000 part is though - that would require the OEM BOM.
Forum: Hardware mods 11 May 2020, 12:11
Replies: 24
Views: 2,080
Posted By hooverphonique
I'm not sure, but the file extension and the...

I'm not sure, but the file extension and the 'PIN..' syntax could indicate that the source file is for atmel WinCUPL.

Sprint PLDASM also uses a .pld extension, but I couldn't verify the language...
Forum: support.Hardware 11 May 2020, 12:00
Replies: 29
Views: 879
Posted By hooverphonique
I don't understand why you would mess with...

I don't understand why you would mess with installing a new fpu if the card isn't working at 50MHz without it - don't complicate things when troubleshooting :-)

Also, it doesn't matter whether the...
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