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Search took 0.09 seconds. Search: Posts Made By: Mathesar
Forum: News 13 March 2024, 19:12
Replies: 18
Views: 1,707
Posted By Mathesar
Hmm, yeah. Maybe more like 3dB (twice the...

Hmm, yeah. Maybe more like 3dB (twice the channels, twice the power). To me it sounds like quite a significant boost in the bass department though.
Very groovy :)
Forum: Amiga scene 13 March 2024, 19:09
Replies: 160
Views: 10,100
Posted By Mathesar
A1200 is the best without a doubt. AGA, IDE,...

A1200 is the best without a doubt.
AGA, IDE, easily expandable up to a 060 with lots of RAM, PCMCIA slot for network or SCSI expansion and all that in cool-looking, compact and much sturdier...
Forum: News 13 March 2024, 11:16
Replies: 18
Views: 1,707
Posted By Mathesar
Sounds very good indeed! Very nice work. It...

Sounds very good indeed! Very nice work.
It also gives 6dB of bass boost right? (by moving the bass to two speakers)
Forum: News 17 February 2024, 21:35
Replies: 146
Views: 21,822
Posted By Mathesar
Wow, I have seen the Hamulet demo. Super...

Wow, I have seen the Hamulet demo. Super impressive stuff!
What a talented group of people working on Grind now!

Music next? ;)
Forum: News 09 February 2024, 16:53
Replies: 146
Views: 21,822
Posted By Mathesar
Great updates indeed! I guess the new binary...

Great updates indeed!

I guess the new binary is not cleared for showing on youtube?
Forum: Retrogaming General Discussion 06 February 2024, 11:21
Replies: 72
Views: 4,378
Posted By Mathesar
For me it must be the TRS-80 Color Computer 2...

For me it must be the TRS-80 Color Computer 2 because it was the first computer I ever owned!
I knew I wanted a computer when I was 10 or so. But I had no idea what a computer actually was and...
Forum: Hardware mods 02 February 2024, 08:59
Replies: 260
Views: 71,295
Posted By Mathesar
Hi Neongod, Yes, the fast ram is making the...

Hi Neongod,

Yes, the fast ram is making the difference. With fast ram it should be a bit faster than with a standard 7MHz CPU.

I have a theory why it still doesn't work with the A590. although...
Forum: Amiga scene 24 January 2024, 14:02
Replies: 76
Views: 4,581
Posted By Mathesar
Is the box stored on the highest shelf?

Is the box stored on the highest shelf?
Forum: Amiga scene 23 January 2024, 12:38
Replies: 76
Views: 4,581
Posted By Mathesar
Amiga 3000 here with 68060, RTG and network....

Amiga 3000 here with 68060, RTG and network. Plugged in and ready to use.
Forum: Amiga scene 22 January 2024, 10:34
Replies: 871
Views: 66,367
Posted By Mathesar
Yes!, NCO is almost a must. The C64 SID chip had...

Yes!, NCO is almost a must. The C64 SID chip had it and Paula should have had it as well.
Forum: Amiga scene 22 January 2024, 09:29
Replies: 871
Views: 66,367
Posted By Mathesar
A lot should have been possible without an...

A lot should have been possible without an Alice/Agnus change. Things like ADPCM compression as on the SNES, dynamic instead of fixed panning, 2-channel 16bit and support for a better quality...
Forum: Amiga scene 22 December 2023, 14:17
Replies: 15
Views: 1,520
Posted By Mathesar
Looks like a Mario Bros clone! Athough the later...

Looks like a Mario Bros clone! Athough the later levels on Bonkhead are more advanced.
https://youtu.be/nKqlPvslQ4A?feature=shared
Forum: Hardware mods 09 September 2023, 09:26
Replies: 260
Views: 71,295
Posted By Mathesar
Then both the normal and the "SE" version of this...

Then both the normal and the "SE" version of this accelerator should work.
Forum: Hardware mods 24 August 2023, 09:20
Replies: 260
Views: 71,295
Posted By Mathesar
The full accelerator is very compatible as long...

The full accelerator is very compatible as long as there is no DMA SCSI device hanging on the side. So, as long as the full accelerator is installed, you cannot use the supraram's harddisk at all.
Forum: Hardware mods 24 August 2023, 08:51
Replies: 260
Views: 71,295
Posted By Mathesar
There was someone in this thread who built the SE...

There was someone in this thread who built the SE but he posted no pictures of the assembled board. I also don't have pictures.
His board worked but it didn't solve the DMA issue with SCSI side-cars...
Forum: support.Hardware 23 August 2023, 09:30
Replies: 26
Views: 2,601
Posted By Mathesar
The Sysinfo screenshot says "clock not found"....

The Sysinfo screenshot says "clock not found". That does not sound well.

Also, is a BFG a good idea? I hear about it having problems with the A3000 SCSI.
Forum: News 26 July 2023, 09:55
Replies: 501
Views: 146,924
Posted By Mathesar
Ah yes, those adapters could be used! I am...

Ah yes, those adapters could be used!
I am actually running a DIY SCSI2SD now with an industrial SD card from Kingston and PFS3AIO....
Forum: News 26 July 2023, 07:05
Replies: 501
Views: 146,924
Posted By Mathesar
But how? Last time I checked there were no SSD's...

But how? Last time I checked there were no SSD's with IDE or SCSI connections available.
Forum: News 25 July 2023, 20:42
Replies: 501
Views: 146,924
Posted By Mathesar
Does anyone really use a true SSD on Amiga's? I...

Does anyone really use a true SSD on Amiga's?
I guess most of us are using CompactFlash cards or IDE2SD and SCSI2SD contraptions. And most compactflash cards and SD cards are not so great when it...
Forum: Hardware mods 12 July 2023, 21:08
Replies: 260
Views: 71,295
Posted By Mathesar
The last digit of a resistor code tells how many...

The last digit of a resistor code tells how many zeroes should be appended to the first 2 digits to get the resistance in ohms. Thus, 22 + 2 zeroes = 2200 Ohms = 2.2kOhms = "2K2". Resistors have no...
Forum: Hardware mods 02 July 2023, 15:07
Replies: 182
Views: 20,647
Posted By Mathesar
Understandably to stay with proven tech! Indeed...

Understandably to stay with proven tech! Indeed these big boards are costly.
Maybe it is possible to add some extra expansion headers? A bit like the infamous clock port header? And then preferably...
Forum: Hardware mods 02 July 2023, 13:03
Replies: 182
Views: 20,647
Posted By Mathesar
For this particular problem a 4 layer PCB is not...

For this particular problem a 4 layer PCB is not needed at all. It has more to do with properly grounding and edge control of the SPI clock signals.
Forum: Hardware mods 02 July 2023, 09:47
Replies: 182
Views: 20,647
Posted By Mathesar
Some ideas: - SPI interface (could replace...

Some ideas:

- SPI interface (could replace IDE) + ethernet?
- support for 1.5MB ranger RAM out of the box?

Once you have SPI, you have Ethernet as well. And to do Ethernet right it has to be...
Forum: Hardware mods 08 May 2023, 22:09
Replies: 634
Views: 248,102
Posted By Mathesar
I also used a combination of smaller dual pin...

I also used a combination of smaller dual pin headers. Sometimes you need the grind the edges a bit to make them fit together snugly. Ram looks OK to me.
Forum: Hardware mods 07 May 2023, 20:41
Replies: 634
Views: 248,102
Posted By Mathesar
Good to hear all is working! :great

Good to hear all is working!
:great
Forum: Hardware mods 04 May 2023, 22:18
Replies: 634
Views: 248,102
Posted By Mathesar
What do you mean with MBO connector? The link...

What do you mean with MBO connector? The link shows some kind of card edge connector. Do you mean the pins for connecting into the motherboard socket? Like these:...
Forum: Hardware mods 03 May 2023, 10:07
Replies: 634
Views: 248,102
Posted By Mathesar
Not straightforward unfortunately. Note that it...

Not straightforward unfortunately.
Note that it could still be the '139 chip on the trapdoor board that always selects the same bank. However, that is unlikely imho.
All I can recommend is to...
Forum: Hardware mods 23 April 2023, 19:12
Replies: 634
Views: 248,102
Posted By Mathesar
There is no easy way to test the gary adapter....

There is no easy way to test the gary adapter. But good to hear the tests of the trapdoor board worked. I guess that one is OK indeed.
The gary adapter does mainly 3 things:
1) Mess with RAMEN into...
Forum: Hardware mods 22 April 2023, 13:28
Replies: 634
Views: 248,102
Posted By Mathesar
Maybe there is a way to test your trapdoor RAM...

Maybe there is a way to test your trapdoor RAM board.

- Remove the Gary adapter and set JP2 on the Amiga motherboard in the original position.
- If I understood correctly you saw 512kb chip +...
Forum: Hardware mods 20 April 2023, 21:23
Replies: 634
Views: 248,102
Posted By Mathesar
Hmmm. Putting the jumpers UP simplified the RAM...

Hmmm. Putting the jumpers UP simplified the RAM bank selection process. So if something in the Gary adapter was wrong this setting could have helped. I'm beginning to suspect your RAM chips are...
Forum: Hardware mods 20 April 2023, 21:00
Replies: 634
Views: 248,102
Posted By Mathesar
Could you try setting the 3 jumpers on the gary...

Could you try setting the 3 jumpers on the gary adapter to the 0,5mb chip setting?
Forum: Hardware mods 19 April 2023, 13:34
Replies: 634
Views: 248,102
Posted By Mathesar
Got it, so the Gary adapter is succesfully...

Got it, so the Gary adapter is succesfully fooling the Amiga into thinking there is 1.5MB slow ram installed. That part is thus working. However, somehow the adapter is not selecting the right ram...
Forum: Hardware mods 18 April 2023, 21:30
Replies: 634
Views: 248,102
Posted By Mathesar
Do it get it right now that you fixed the missing...

Do it get it right now that you fixed the missing pin14 on the gary adapter.
And that



the system boots!
Workbench reports 1.5mb slow and 512kb chip?

Can you confirm that?
Forum: Hardware mods 18 April 2023, 19:37
Replies: 634
Views: 248,102
Posted By Mathesar
No, REGEN and RAMEN are controlled by the logic...

No, REGEN and RAMEN are controlled by the logic on the gary adapter and must not be shorted.

BUT.... you have the wrong Gary adapter! It is the old version which does not work properly. The proper...
Forum: Hardware mods 17 April 2023, 20:43
Replies: 634
Views: 248,102
Posted By Mathesar
Ok, got your message. Few things to check: Did...

Ok, got your message. Few things to check:
Did you cut the XCAS jumper traces? Otherwise the gary adapter won't work.
Also, remember Gary messes with the A19 address line into Agnus to make the...
Forum: support.Hardware 17 March 2023, 20:17
Replies: 7
Views: 1,001
Posted By Mathesar
MLCC's can be OK but generally speaking,...

MLCC's can be OK but generally speaking, electrolytics have the nice property that they have quite some ESR. The power supply traces on the motherboard have some parasitic inductance. Together with...
Forum: support.Hardware 16 March 2023, 20:31
Replies: 7
Views: 1,001
Posted By Mathesar
I would install plain caps with a normal ESR. Do...

I would install plain caps with a normal ESR. Do not use any low ESR mlcc or polymer caps. The ESR of the caps are actually needed to stabilize the power rails and prevent oscillations.
Forum: Hardware mods 10 March 2023, 10:30
Replies: 260
Views: 71,295
Posted By Mathesar
I think you build it right. the fact that a...

I think you build it right. the fact that a 68HC000 makes it work better makes me believe the problems are related to subtle timing issues with the DMA bus request signals.
That it works at all and...
Forum: Hardware mods 07 March 2023, 13:16
Replies: 260
Views: 71,295
Posted By Mathesar
Hi GouldFish! First things first: You are...

Hi GouldFish!

First things first: You are the first that I know of that has built the "SE" version.
Can you confirm that it works indeed with the DMA SCSI controller of the GVP HD8+?
That would...
Forum: Amiga scene 03 March 2023, 15:26
Replies: 128
Views: 14,884
Posted By Mathesar
I had an A1200 with a harddisk, Blizzard 1230IV...

I had an A1200 with a harddisk, Blizzard 1230IV and 16MB fast RAM.
It was a huge step up from the A500, especially with an accelerator installed. The ability to run higher resolution productivity...
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