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Search: Posts Made By: PurpleMelbourne
Forum: support.Hardware Yesterday, 16:47
Replies: 0
Views: 86
Posted By PurpleMelbourne
Reverse engineering chips from die photos

Looking over some almost 4k res photos of Motorola chips, i first noticed the pictures are kind of blury, but also very regular...

So i was thinking it'd be a great avenue to train an AI on 6800...
Forum: Amiga scene Yesterday, 16:28
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
KiCad on Amiga for a start. Compiling FPGA for...

KiCad on Amiga for a start.
Compiling FPGA for another.
Forum: Amiga scene Yesterday, 11:41
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
Are there other ways that multi processing...

Are there other ways that multi processing hardware on Amiga can successfully work on the software?
Forum: Amiga scene Yesterday, 11:39
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
Eek So it sounds like the answer to the chicken or...

So it sounds like the answer to the chicken or the egg question...
There is a software problem to be solved before a hardware solution can be created. And so no point trying to push the boundaries....
Forum: Amiga scene Yesterday, 06:03
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
IIRC the upper 2GB memory area was reserved for a...

IIRC the upper 2GB memory area was reserved for a Motorola idea of memory protection. Lower 2GB being alterable and upper 2GB being read only.

So how about OS support for multi processing. Our...
Forum: Hardware mods Yesterday, 05:27
Replies: 351
Views: 34,862
Posted By PurpleMelbourne
Has anyone decapped and scanned Akiko?

Has anyone decapped and scanned Akiko?
Forum: support.Hardware 03 June 2020, 16:52
Replies: 19
Views: 684
Posted By PurpleMelbourne
It would be nice to get much higher res, like...

It would be nice to get much higher res, like those of a modern phone camera so we can zoom right in.
The pictures of Paula are much better than the others that I've seen. So working on upgrading to...
Forum: support.Hardware 03 June 2020, 12:45
Replies: 8
Views: 315
Posted By PurpleMelbourne
A few months back I bought some such SIMMs which...

A few months back I bought some such SIMMs which look newly manufactured for use with SUN systems. So in small quantities they are available on ebay.
Forum: support.Hardware 02 June 2020, 08:45
Replies: 19
Views: 684
Posted By PurpleMelbourne
Sounds like an awesome idea. These designs can be...

Sounds like an awesome idea. These designs can be used as reference to improve the FPGA software, eventually making them as accurate as is desirable, but perhaps a few little tweaks to make them...
Forum: Hardware mods 02 June 2020, 05:05
Replies: 8
Views: 1,407
Posted By PurpleMelbourne
If adding a FlashFloppy/Gotek but with an...

If adding a FlashFloppy/Gotek but with an upgraded microcontroller of the STM407, you could add the capability for Ethernet. Just need to figure out where to put the Ethernet socket.
Forum: Amiga scene 21 May 2020, 15:47
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
And 060's so expensive. Sigh. :scream

And 060's so expensive. Sigh. :scream
Forum: support.Hardware 21 May 2020, 15:43
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
So multi processor OS is off the table for us? ...

So multi processor OS is off the table for us?
Well it's a good thing there is a new technology to pretend to combines cores back as one. I don’t know what it's called and don't know when it will...
Forum: support.Hardware 21 May 2020, 13:34
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
We need more speed. Maybe what is really needed...

We need more speed. Maybe what is really needed is a Coldfire primary CPU and 68K as backup which would run all the "other than OS" SW except what has been compiled for Coldfire, which obviously is...
Forum: Amiga scene 21 May 2020, 12:35
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
For new Amiga compatibles, how about a two part...

For new Amiga compatibles, how about a two part ROM.

Device specific ROM and Generic hardware abstracted ROM.

Atari ST could run Amiga and finally get a decent OS ;)
Forum: Amiga scene 21 May 2020, 12:24
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
Coldfire support can buy us time while we try to...

Coldfire support can buy us time while we try to figure out our post Motorola 68K future.

We can make the hardware, but we cant build cheap fast 68K CPU's. If AmigaOS could be compiled for the...
Forum: support.Hardware 20 May 2020, 17:36
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
So you mean like a Coldfire WarpUp card type...

So you mean like a Coldfire WarpUp card type thing?
Its late here so I'm picking up pretty slow. But this sounds like an interesting idea. With FPGA all sorts of things can be done. Like how about...
Forum: support.Hardware 20 May 2020, 17:27
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
Dave Haynie's comments about a computer full of...

Dave Haynie's comments about a computer full of these cards makes more sense if you are right. SO you are probably right!

What do you think about the idea of doing the same thing via PCI instead...
Forum: support.Hardware 19 May 2020, 16:02
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
AGP is a DDR version of 66MHz PCI yes. But the...

AGP is a DDR version of 66MHz PCI yes.
But the Cirrus Logic GD5446 has a PCI interface. So it's PCI unless I figure out how an FPGA can read the ram direct to bypass the PCI bus.

I should...
Forum: support.Hardware 19 May 2020, 15:33
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
The trouble with the cold dire is they dropped...

The trouble with the cold dire is they dropped enough instructions that it's not 68K compatible anymore.

It's a pretty good CPU, but now also languishing.
I've got a friend who does racecard...
Forum: support.Hardware 18 May 2020, 14:56
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
Also how's this model for adding a WarpUpPPC PCI...

Also how's this model for adding a WarpUpPPC PCI expansion card?
I think it should work to allow both CPU's to run simultaneously in asynchronous mode. If I remember correctly, the problem with the...
Forum: support.Hardware 18 May 2020, 09:57
Replies: 42
Views: 1,192
Posted By PurpleMelbourne
Commodore Gemini dual 030 card and Buster magic

In the Commodore labs they made a dual 68030 card called Gemini.
Its elegantly simple how it works.

_____________________________
............Amiga 2000 motherboard.....................
Forum: Hardware mods 18 May 2020, 07:11
Replies: 24
Views: 1,325
Posted By PurpleMelbourne
I have three trays of them on hand ;) They are...

I have three trays of them on hand ;)
They are not available as a new part, but they are used extensively in the world telecom industry, so unlike the 060's they are in large numbers of old stock...
Forum: support.Hardware 18 May 2020, 06:44
Replies: 6
Views: 393
Posted By PurpleMelbourne
STM32H series is pretty cool. Fast ARM32 RISC...

STM32H series is pretty cool. Fast ARM32 RISC processor and many other useful functions if it can be interfaced to the Amiga as a DMA controller.
The ChromeArt accelerator should be adequate for...
Forum: Retrogaming General Discussion 18 May 2020, 06:29
Replies: 15
Views: 764
Posted By PurpleMelbourne
In a few months I'd put down for $500 of them. ...

In a few months I'd put down for $500 of them.
I'd hope that for double the price we can get ten times as many produced ;)

So if you can get 80 people to put down $500 then we can end the RGB23...
Forum: Hardware mods 17 May 2020, 13:27
Replies: 24
Views: 1,325
Posted By PurpleMelbourne
So what about this talk of dual CPU in B2000? It...

So what about this talk of dual CPU in B2000? It flew over my head. I don't see how it could work. Special hidden magic in the Buster chip?

What do you think about swapping the 68030 for the...
Forum: Amiga scene 17 May 2020, 13:03
Replies: 544
Views: 53,672
Posted By PurpleMelbourne
You can ship it from here to Germany without...

You can ship it from here to Germany without problems except post is very slow right now due to reduced shipping, so probably best use FedEx or some other courier company to make sure it goes by...
Forum: Hardware mods 17 May 2020, 00:58
Replies: 8
Views: 1,407
Posted By PurpleMelbourne
How about replace the RBG23 with DVI? Pass the...

How about replace the RBG23 with DVI?
Pass the analogue RGB signals through the analogue lines.
Pass the digital pre-Hybrid signal through on the digital lines.

Can floppy DB23 be feasibly...
Forum: Retrogaming General Discussion 16 May 2020, 15:21
Replies: 15
Views: 764
Posted By PurpleMelbourne
I wonder if its the kind of thing that is worth...

I wonder if its the kind of thing that is worth getting all the bits made up to construct a DB23.

So that'd be the metal shroud being the toughest part. Then 23 standard pins just like a DB25, a...
Forum: Hardware mods 16 May 2020, 15:14
Replies: 62
Views: 10,777
Posted By PurpleMelbourne
What would be a suitable case? And keyboard? ...

What would be a suitable case?
And keyboard?
And mouse! ??
Forum: Hardware mods 16 May 2020, 15:12
Replies: 24
Views: 1,325
Posted By PurpleMelbourne
That probably makes sense. Matze already has...

That probably makes sense.
Matze already has the code to use SRAM in the bottom 16MB range. The only reason you would want to disable the fast CPU is for game compatibility, and so only a small...
Forum: Amiga scene 16 May 2020, 11:46
Replies: 57
Views: 9,098
Posted By PurpleMelbourne
Any thoughts on if Minimig is complete enough to...

Any thoughts on if Minimig is complete enough to function as a replacement chipset?
Forum: support.Hardware 16 May 2020, 11:37
Replies: 1
Views: 162
Posted By PurpleMelbourne
Anywhere?

Anywhere?
Forum: support.Hardware 16 May 2020, 11:36
Replies: 5
Views: 265
Posted By PurpleMelbourne
Yes good point about the chips! They only have a...

Yes good point about the chips! They only have a 16 bit SCSI bus, but their CPU bus is 32 bits. :banghead
Perhaps a new Video card could benefit from having DMA on board?

I wonder if the...
Forum: support.Hardware 16 May 2020, 09:41
Replies: 159
Views: 15,792
Posted By PurpleMelbourne
Nice to see their home page address :)

Nice to see their home page address :)
Forum: Hardware mods 16 May 2020, 09:34
Replies: 24
Views: 1,325
Posted By PurpleMelbourne
So do you think perhaps just make a new card...

So do you think perhaps just make a new card which is "inspired by" A2630, Terrible Fire, and Matze's A500 030?

If it helps get more people able to make Amiga hardware, then perhaps eventually...
Forum: support.Hardware 16 May 2020, 02:18
Replies: 25
Views: 1,740
Posted By PurpleMelbourne
So does that mean there is a chance that newly...

So does that mean there is a chance that newly made, but not redesigned, chips might be manufactured smaller than Freescale did, and thus be able to run cooler and faster. But all depending on how...
Forum: support.Hardware 16 May 2020, 02:06
Replies: 5
Views: 265
Posted By PurpleMelbourne
16 bit DMAC example for DIY Zorro cards

I've been looking around to try and figure out how to interface to the Zorro bus with DMA.-

Looking at the 2091 design shows that the 8 bit SCSI chip is linked through the DMAC chip which supplies...
Forum: Amiga scene 14 May 2020, 16:38
Replies: 57
Views: 9,098
Posted By PurpleMelbourne
Awaken yee old thread! :spin In case you...

Awaken yee old thread! :spin

In case you haven't looked for a while, you may not know there is now information on how the Fat Buster is designed....
Forum: support.Hardware 13 May 2020, 18:01
Replies: 1
Views: 162
Posted By PurpleMelbourne
Question A4091 schematics available anywhere?

I'm wanting to look at the 4091 design, but I haven't found them.

Are they available anywhere?
Forum: support.Hardware 13 May 2020, 02:27
Replies: 25
Views: 1,740
Posted By PurpleMelbourne
You're probably right. Its all in the tooling...

You're probably right. Its all in the tooling expense.
If you order one chip, they'll do it, and then keep a bunch on the shelf for the next buyer in two years. That's their business model.

Now...
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