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Forum: support.Hardware 20 October 2020, 11:30
Replies: 6
Views: 410
Posted By hooverphonique
It's perfectly natural to have an instant READY...

It's perfectly natural to have an instant READY signal if the drive is spinning since it is already up to speed.

AmigaOS does not read the READY signal, but uses a timed delay (I can't remember...
Forum: Coders. Asm / Hardware 19 October 2020, 17:30
Replies: 21
Views: 722
Posted By hooverphonique
you could allocate sizeof(voltable)+512 and...

you could allocate sizeof(voltable)+512 and load/copy the data there starting at the aligned address.
Forum: support.Hardware 14 October 2020, 11:39
Replies: 30
Views: 893
Posted By hooverphonique
I agree - if the gain of 2 is intented (for AC),...

I agree - if the gain of 2 is intented (for AC), this capacitor must be there for DC unity gain.


What I don't understand is the cap between the two 10k resistors - in my mind it will raise the...
Forum: Nostalgia & memories 05 October 2020, 15:31
Replies: 292
Views: 9,716
Posted By hooverphonique
True - I read 'relevant devices' as something...

True - I read 'relevant devices' as something part of the machine, i.e. not including peripherals ;)
Forum: Nostalgia & memories 05 October 2020, 15:10
Replies: 292
Views: 9,716
Posted By hooverphonique
Only the A3000(T) (and maybe A4000T?) had...

Only the A3000(T) (and maybe A4000T?) had harddrive DMA capability built in (SCSI), and it was quite expensive to add for many years after the Amiga was released.


I'd say that the Amiga...
Forum: Coders. Asm / Hardware 25 September 2020, 11:41
Replies: 32
Views: 1,851
Posted By hooverphonique
I'm pretty sure it does because it has no other...

I'm pretty sure it does because it has no other way of getting a clock for sampling the data correctly.
4489 *is* used for amiga format disks, too, yes, so Thomas has a point about "full code space"...
Forum: Coders. Asm / Hardware 24 September 2020, 11:06
Replies: 11
Views: 836
Posted By hooverphonique
I don't know, but potentially it could be...

I don't know, but potentially it could be altering INTEN (bit 14) master interrupt enable.
Forum: Coders. Asm / Hardware 23 September 2020, 16:59
Replies: 11
Views: 836
Posted By hooverphonique
Those registers cannot be read, in fact all of...

Those registers cannot be read, in fact all of the custom chip registers are either read or write, not both. Could that be the source of your problems (reading the wrong registers) ?
Forum: Amiga scene 23 September 2020, 16:55
Replies: 23
Views: 1,759
Posted By hooverphonique
What does that have to do with if the technical...

What does that have to do with if the technical drawings of a device are copyrighted or not?
Forum: Coders. Asm / Hardware 23 September 2020, 16:53
Replies: 3
Views: 529
Posted By hooverphonique
I could be wrong, but I think constants defined...

I could be wrong, but I think constants defined using xdef ends up in the data section, i.e. not as an instruction immediate value.
Forum: Coders. Asm / Hardware 23 September 2020, 16:51
Replies: 32
Views: 1,851
Posted By hooverphonique
Wouldn't your "cache" need the clock bits in...

Wouldn't your "cache" need the clock bits in order to extract the clock of the data stream when writing (and vice versa for Paula when reading) ?
Forum: support.Hardware 23 September 2020, 16:47
Replies: 4
Views: 286
Posted By hooverphonique
I have the TL866 as well, and used it for...

I have the TL866 as well, and used it for programming GALs without issues.
It only supports ICs up to 40 pins, so as aeberbach mentioned, it requires some tricks to program larger ones.

I'm...
Forum: support.Hardware 21 September 2020, 22:06
Replies: 12
Views: 369
Posted By hooverphonique
yes and no - the issue is with pcmcia...

yes and no - the issue is with pcmcia ram-expansions and >4MB in trapdoor simultaneously causing a hardware conflict. kick 3.1 tries to "fix" that by disabling pcmcia even if the card is not a...
Forum: support.Hardware 21 September 2020, 16:09
Replies: 12
Views: 369
Posted By hooverphonique
Maybe this is the common pcmcia conflict with 8MB...

Maybe this is the common pcmcia conflict with 8MB ram in 24-bit space... Do you have anything in the pcmcia slot?
Forum: Amiga scene 17 September 2020, 18:55
Replies: 23
Views: 1,759
Posted By hooverphonique
I agree with Daedalus that a schematic or a pcb...

I agree with Daedalus that a schematic or a pcb layout is as much a copyrightable drawing as any other drawing...
Forum: support.Hardware 16 September 2020, 16:47
Replies: 56
Views: 1,744
Posted By hooverphonique
The RTC (Oki, Ricoh, etc) is loaded into the CIA...

The RTC (Oki, Ricoh, etc) is loaded into the CIA chip TOD timer (time of day) on boot - the TOD doesn't progress correctly if certain interrupts are disabled or TOD registers are meddled with, which...
Forum: Coders. Asm / Hardware 16 September 2020, 15:08
Replies: 39
Views: 2,886
Posted By hooverphonique
It's the job of the cpu library to set this up,...

It's the job of the cpu library to set this up, not whdload, but depending on which library is used, maybe it isn't?
Forum: support.Hardware 15 September 2020, 12:18
Replies: 24
Views: 837
Posted By hooverphonique
I don't know your hw specifically, but it...

I don't know your hw specifically, but it strongly suggests that it moves the interrupt/exception vectors to fastmem, which is faster than having them in slowmem (where they are located by default).
Forum: support.Hardware 14 September 2020, 21:50
Replies: 24
Views: 837
Posted By hooverphonique
VBR2FAST should also give a speed increase..

VBR2FAST should also give a speed increase..
Forum: Coders. Asm / Hardware 09 September 2020, 11:29
Replies: 57
Views: 3,033
Posted By hooverphonique
andi is also two words ;)

andi is also two words ;)
Forum: support.Hardware 07 September 2020, 17:19
Replies: 42
Views: 2,361
Posted By hooverphonique
Does the mentioned module only search for those...

Does the mentioned module only search for those libraries specifically, or does it work with any library?
Edit: I suppose the module just makes those two specific libs resident, so it has nothing to...
Forum: Coders. Asm / Hardware 06 September 2020, 22:48
Replies: 9
Views: 771
Posted By hooverphonique
Your instruction is byte/word size, so EA is...

Your instruction is byte/word size, so EA is 8(2/0), so 12 cycles in total (for memory) - when reading a peripheral, wait states may come into play, as meynaf hinted at (how/if these are emulated, I...
Forum: MarketPlace 28 August 2020, 15:29
Replies: 1
Views: 545
Posted By hooverphonique
Hi John, Are you able to supply the 200 pin...

Hi John,

Are you able to supply the 200 pin local slot connector also?

best regards,
Jesper
Forum: support.Hardware 28 August 2020, 14:49
Replies: 2
Views: 269
Posted By hooverphonique
Yes, I did notice the address lines give 1MB of...

Yes, I did notice the address lines give 1MB of rom address space, I was just thrown off by the schematic indicating the HN62402 being 256k*16.


I just noticed that I already commented on that...
Forum: support.Hardware 28 August 2020, 00:33
Replies: 2
Views: 269
Posted By hooverphonique
A4000 ROM size

I was looking at replacing the roms in my A4000 with a flash ram-based solution.
From what I remember from the 90's, the A4000 has/supports 512kB of kickstart rom (@$F80000), and the memory map...
Forum: Coders. Asm / Hardware 24 August 2020, 18:37
Replies: 18
Views: 1,394
Posted By hooverphonique
In order to keep memory allocated for both...

In order to keep memory allocated for both effects/screens during the transition?
Forum: Coders. General 18 August 2020, 14:09
Replies: 27
Views: 3,069
Posted By hooverphonique
To "hide" the top 16 bitmap lines, just set your...

To "hide" the top 16 bitmap lines, just set your bitplane pointers 16 lines into the bitmap (as you said).


If you want the screen to end 16 lines early, set DIWSTOP to $2c-16=$1c (vertical).
Forum: Coders. General 14 August 2020, 11:47
Replies: 27
Views: 1,880
Posted By hooverphonique
The final part of this is a coppper-chunky...

The final part of this is a coppper-chunky rotozoomer (shameless plug) : https://www.youtube.com/watch?v=wm5WLVAvBSM


Basically, all your classic copper plasma effects are a form of copper-chunky...
Forum: Coders. General 12 August 2020, 16:54
Replies: 11
Views: 735
Posted By hooverphonique
your shifting exercise does nothing but clear the...

your shifting exercise does nothing but clear the lower 4 bits ;-)

edit: well, it also sets some status flags which you aren't using anyway, so...
Forum: Amiga scene 11 August 2020, 11:21
Replies: 581
Views: 86,862
Posted By hooverphonique
Maybe this is for you :-) airing on HBO August...

Maybe this is for you :-) airing on HBO August 16, 2020.

https://en.wikipedia.org/wiki/Lovecraft_Country_(TV_series)
Forum: support.Hardware 10 August 2020, 22:18
Replies: 8
Views: 1,522
Posted By hooverphonique
Sorry for OT, but what is "Matze's TK060"? Google...

Sorry for OT, but what is "Matze's TK060"? Google doesn't come up with anything useful for me..
Forum: support.Hardware 10 August 2020, 11:21
Replies: 24
Views: 839
Posted By hooverphonique
Move the heads to track 0 (outer) and use the...

Move the heads to track 0 (outer) and use the multimeter to measure voltage on the track 0 signal, then power the amiga on. If you for every step (at the boot screen) get alternating 0V/5V, then the...
Forum: support.Hardware 07 August 2020, 18:14
Replies: 24
Views: 839
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, 19:34
Replies: 80
Views: 6,109
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, 17:38
Replies: 19
Views: 974
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, 15:30
Replies: 117
Views: 7,617
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, 16:08
Replies: 8
Views: 450
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, 12:17
Replies: 15
Views: 825
Posted By hooverphonique
This ^^^

This ^^^
Forum: Coders. System 28 July 2020, 22:37
Replies: 20
Views: 2,071
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, 12:19
Replies: 4
Views: 685
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...
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